JOINT PROFILE AND ROAD SURFACE SYSTEM

Description

[0001] The invention relates to a joint profile, in particular for joints in road surfaces, and to a road surface system.

[0002] On traffic areas, particularly roadways, subject to high levels of wear and tear, e.g. on motorways and / or bus stops, concrete pavements are generally used. These offer greater stability and durability than, for example, asphalt. Such concrete surface layers are typically approximately 18 to 30 cm thick and consist of several concrete slabs, which can be connected to one another using dowels and / or anchors. Temperature fluctuations, moisture and / or load-related factors can lead to different movements between adjacent sections of the concrete slabs, which can cause stress cracks. To prevent the formation of uncontrolled cracks or wild cracks, it is common practice to provide joints, particularly longitudinal joints and transverse joints, in the concrete surface layers.For example, dummy joints can be used that do not completely cut through the concrete slabs, but instead serve as predetermined breaking points in the form of joint notches to allow controlled crack formation. The joint notches can be widened by cutting them open to create a joint gap. To prevent solids or liquids from entering the joints, which could impede the movement of the slabs and / or damage layers below the concrete slab, the joints are usually filled with a sealing material. Joint profiles, for example, are used for this purpose.

[0003] High demands are placed on the joint profiles. On the one hand, they must ensure that the joints are sealed against the penetration of water and / or moisture as well as pollutants dissolved therein in order to prevent the resulting erosion of the lower base layers and the cracking of the road slabs. Furthermore, the accumulation of foreign matter in the joints must be prevented, and the joint profile itself must be sufficiently flexible and deformable. Otherwise, the mobility of the concrete slabs could be restricted, leading to cracks, edge fractures, and / or slab breakage. Finally, the joint profiles should be able to retain their properties for as long as possible, and sagging or tearing out of the joints should reliably be prevented. The joint profiles must be able to withstand traffic loads, temperature fluctuations, and even extreme temperatures, e.g.-20°C to +50°C, humidity from water vapor and rain as well as horizontal joint movements, e.g. quasi-static, ie slow, up to 7 mm and dynamic up to 0.1 mm.

[0004] Joint profiles can be tested for their long-term properties, for example, in specialized accelerated testing procedures. For example, a year's cycle with mechanical and thermal stress can be simulated over a shortened period of time. Conventional joint profiles have been found to not adequately meet some of the desired requirements. For example, after several test cycles, it was determined that state-of-the-art joint profiles barely exhibited any restoring forces, had virtually no dimensional stability, and could potentially lead to twisting of the profile.

[0005] WO 03 / 046300 A1 discloses a seal having a main web from which first and second side arms protrude. A first connecting web extends between a first of the side arms and a second of the side arms, such that a first cavity is enclosed by the first side arm, the second side arm, the first connecting web, and the main web. A second connecting web extends between the second of the side arms and the main web, such that a second cavity is enclosed by the second connecting web, the second of the side arms, and the main web.An end region is arranged at one end of the joint profile adjacent to the main web, wherein the end region has a main extension in the transverse direction, wherein the joint profile comprises an end connecting web which extends between a first distal end of the end region in the transverse direction and one of the side arms, such that a cavity is enclosed by the second end region, the side arm, and the main web. Alternatively, instead of the second connecting web, an end region enclosing a cavity can be arranged at another end of the joint profile adjacent to the main web, wherein a connecting web is arranged between the second of the side arms and the cavity.

[0006] DE 91 12 115 U1 shows a strand-shaped profile with several vertical webs and several transverse webs.

[0007] US 3,960,462 A shows a sealing element with a main web from which side webs protrude.

[0008] It is therefore an object of the invention to provide a joint profile which has improved tensile and restoring forces in the short and / or long term and can ensure reliable sealing even with larger joint expansion.

[0009] This object is achieved by a joint profile according to claim 1 and a road surface system according to claim 12. Further advantages and features emerge from the respective dependent claims as well as from the description and the figures.

[0010] According to the invention, a joint profile, in particular for joints in road surfaces, e.g.Motorway joints and / or joints of traffic areas, provided comprising a main web which extends in a longitudinal direction of the profile cross-section, at least a first and a second side arm which extend away from the main web on a first side of the main web with an extension direction which has at least one component in a transverse direction of the profile cross-section, at least a first connecting web which extends between a first of the side arms and a second of the side arms, such that a first cavity is enclosed by the first side arm, the second side arm, the first connecting web and the main web, and at least one second connecting web which extends between the second of the side arms and the main web, such that a second cavity is enclosed by the second of the side arms, the second connecting web and the main web.The description of the joint profile here and below, particularly with regard to geometric proportions, orientations, and arrangements, generally applies to the joint profile in the unloaded state, unless otherwise stated. The joint profile may exhibit different properties, in particular a different or deformed geometry, particularly when used in a joint, e.g., due to bracing with the joint side walls. The joint profile is, in particular, a profile element. Advantageously, the joint profile can be formed in one piece and / or essentially in one piece. "Essentially in one piece" can mean, for example, that one or more components, such as an anti-expansion thread, are incorporated or embedded in the joint profile. The plane of the profile cross-section is spanned by the longitudinal direction and the transverse direction, with the transverse direction running perpendicular to the longitudinal direction.A direction perpendicular to the profile cross-section, in particular to the longitudinal and transverse directions, is referred to in the context of this invention as the vertical direction or profile direction. The joint profile can preferably have a substantially constant cross-section or profile cross-section when viewed in the vertical direction. The terms "positive direction" and "negative direction" refer to explicit orientation and / or direction specifications. An end of the joint profile that terminates the joint profile in the positive longitudinal direction is referred to as the first end, while an end that terminates the joint profile in the negative longitudinal direction is referred to as the second end. "Substantially" in the context of this invention can be understood to mean that design-related deviations and / or deviations of up to a maximum of 10%, preferably up to a maximum of 5%, and particularly preferably up to a maximum of 2% can occur.Depending on the size considered, the deviation can be, for example, a deviation in an extension length, an angular orientation or a curvature (related to the ratio of the curvature to the width or wall thickness of the component). A substantially straight connection can, for example, have a maximum curvature to wall thickness ratio of 0 to 0.10, preferably 0 to 0.05. The joints can, for example, be transverse joints or longitudinal joints. They can, for example, be dummy joints and / or dummy joints subsequently widened to form a joint gap. A joint profile according to the invention can preferably be provided for motorway joints but also generally for joints in road surfaces, in particular in joints in concrete surface layers, and / or for other joints. The joint profile is preferably arranged in the joint such that the longitudinal direction is substantially parallel to the depth and the transverse direction is substantially parallel to the width of the joint.When inserted into the joint, the joint profile can be pressed together or compressed, in particular in the transverse direction. In particular, when inserting the joint profile into the joint, the angle of the extension of the side arms to the longitudinal direction can be changed, preferably such that the side arms are bent in their extension from the main web at least partially in the direction of the joint opening and / or the road surface. The main web can in particular be a central web. In other words, the main web can be arranged essentially centrally in the joint profile, viewed in the transverse direction. The main web extends in the longitudinal direction of the profile cross-section. In particular, the main web has its greatest extension in the longitudinal direction relative to the profile cross-section.The ratio of the length of the main web in the longitudinal direction to the length of the entire joint profile in the longitudinal direction can be in a ratio of 0.60 to 0.98, preferably 0.70 to 0.95, particularly preferably 0.77 to 0.92. The length of the main web in the transverse direction can vary along the longitudinal direction. Preferably, the main web has a substantially constant length in the transverse direction for a large part of its longitudinal length. The majority of the longitudinal length of the main web can be locally interrupted by wider and / or narrower regions, for example at connection points of the side arms. If, within the scope of this invention, reference is made to a width of the main web or to a length in the transverse direction, the reference is to the majority of the longitudinal length mentioned here, unless otherwise stated in the description.The ratio of the extension of the main web in the transverse direction to the extension of the main web in the longitudinal direction can be 0.01 to 0.40, preferably 0.02 to 0.2, particularly preferably 0.05 to 0.10. The extension of the main web in the transverse direction to the extension of the entire joint profile in the transverse direction can advantageously be in a ratio of 0.01 to 0.40, preferably 0.04 to 0.30, particularly preferably 0.10 to 0.22. It has been found that these length ratios and these width ratios can each enable particularly good stability in combination with the flexibility of the joint profile required to compensate for changes in the length of the roadway slabs, e.g., due to temperature and / or load. In the sense of the invention, the profile cross-section can be divided into two sides, in particular the first side of the main web and a second side of the main web, by the longitudinal extension of the main web.In other words, the first side of the main web can adjoin the main web in a positive transverse direction, and the second side of the main web can adjoin the main web in a negative transverse direction. The first and second side arms extend away from the main web on the first side of the main web. An extension direction of the side arms each has at least one component in the transverse direction. In particular, a distal end of the first and / or second side arm is spaced apart from the main web in the transverse direction. Preferably, the first and / or second side arm can extend away from the main web in a negative longitudinal direction and / or in a positive transverse direction. Preferably, a width of one, preferably several, particularly preferably all, side arms running transversely to the extension direction can be less than a length of the corresponding side arm running in the extension direction.The width of the side arms extending transversely to the direction of extension can preferably be in a ratio of 0.1 to 1.2, preferably 0.3 to 1.0, particularly preferably 0.5 to 0.9, to the transverse extension of the main web. The side arms can advantageously enable elasticity of the joint profile, particularly in the transverse direction. Additionally or alternatively, the side arms can have a function similar to barbs and be designed to counteract slipping of the joint profile in the joint, particularly along the longitudinal direction, specifically slipping out toward the road surface.A connection of one of the side arms, in particular the second side arm, to the main web can be provided such that a distance of a central connection point of the side arm, viewed in the longitudinal direction, from a first end of the joint profile, viewed in the longitudinal direction, to the entire longitudinal extent of the joint profile is in a ratio of 0.1 to 0.8, preferably 0.3 to 0.6, particularly preferably 0.4 to 0.5. A connection of another of the side arms, in particular the first side arm, to the main web can be provided such that a distance of a central connection point of the side arm, viewed in the longitudinal direction, from a first end of the joint profile to the entire longitudinal extent of the joint profile is in a ratio of 0.4 to 0.95, preferably 0.6 to 0.9, particularly preferably 0.7 to 0.8. Such an arrangement can result in advantageous flexibility properties, in particular improved restoring forces, of the joint profile in the transverse direction.The joint profile comprises at least one first connecting web, which extends between a first of the side arms and a second of the side arms, such that a first cavity is enclosed by the first side arm, the second side arm, the first connecting web and the main web, and at least one second connecting web, which extends between the second of the side arms and the main web, such that a second cavity is enclosed by the second connecting web, the second of the side arms and the main web. At least one of the connecting webs can have a main extension which comprises straight and / or curved regions. For example, the connecting web can comprise a substantially straight region followed by a curved region. The connecting web can comprise a straight region, at the two ends of its main extension of which a curved region adjoins.Preferably, the first connecting web can comprise a substantially straight region adjoining the first side arm. Additionally or alternatively, the first connecting web can comprise a curved region adjoining the straight region and / or adjoining the second side arm. The curved region can be curved such that a circle center of the inner curvature side defined by the curvature is arranged on the side of the curved region facing away from the main web and / or that, viewed from the straight region, the curved region is bent away from the main web. The straight region of the first connecting web can preferably be oriented such that its direction of extension from the first side arm to the second side arm has a component in the positive longitudinal direction and / or a component in the transverse direction towards the main web (in particular in the negative transverse direction).In particular, the first connecting web can have, starting from the first side arm and extending over its entire extent, a component in the positive longitudinal direction and / or a component in the transverse direction toward the main web. At the connection point of the first connecting web to the first side arm and as part of the, in particular first, cavity, a part-circular recess can be provided in the first connecting web and / or the first side arm. The straight region of the second connecting web can preferably be oriented such that its direction of extension from the first side arm to the main web has a component in the positive longitudinal direction and / or a component in the transverse direction toward the main web (in particular in the negative transverse direction).In particular, the second connecting web can have, starting from the second side arm over its entire extension, a component in the positive longitudinal direction and / or a component in the transverse direction towards the main web. The straight region of the first connecting web can be oriented with respect to the main web such that it is at an angle of 0 to 40°, preferably 5° to 30°, particularly preferably 12 to 20°, to the main web. Here and in the following, unless otherwise stated, reference is always made to the smallest angle (which cannot be greater than 90°) between the extension direction of two components. Preferably, the second connecting web can comprise a curved region in the connection region to the main web, in particular with a curvature directed towards the second side arm and / or with a center of curvature of the inner curvature side defined by the curvature, which lies between the second connecting web and the main web.The second side arm can comprise a straight region or a substantially straight region, in particular adjacent to the curved region. The straight region of the second connecting web can be oriented with respect to the main web such that it is at an angle of 0 to 40°, preferably 5° to 30°, particularly preferably 10 to 18°, to the main web. The connecting web, in particular with the orientations specified here, can provide a larger lateral contact area of ​​the joint profile with the side walls of the joint, thereby ensuring increased resistance to displacement of the joint profile in the longitudinal direction. The straight region of the second connecting web can connect directly to the second side arm. Alternatively, the second connecting web can comprise a transition region that connects the straight region to the second side arm.A projection of the transition region adjacent to the substantially straight region can be oriented relative to the straight region such that an angle between the straight region and the projection is 50° to 90°, preferably 70° to 90°, particularly preferably 80° to 90°. The transition region can be curved, in particular as viewed from the straight region, such that it is bent away from the main web and / or with a center of curvature of the inner curvature side which is further away in the longitudinal and / or transverse direction from the point of attachment of the second side arm to the main web than the distal end of the second side arm. A width of the substantially straight regions of the connecting webs, in particular of the first and / or the second connecting web, which runs transversely to their direction of extension, can preferably be in a ratio of 0.1 to 1.5, preferably 0.3 to 1.2, particularly preferably 0.4 to 1.0 to the extension of the main web.Advantageously, the joint profile can be given additional stability by the first and / or second connecting web, in particular with regard to tensile forces in the longitudinal direction. For example, the joint profile can be designed to withstand tensile forces of up to 300 N and / or to have an elongation of a maximum of 5% at tensile forces of up to 300 N. The resilience of the profile, in particular even at extreme temperatures in the range from -25°C to +70°C, can also be improved in the short term and possibly also in the long term by the connecting webs. Compared to the prior art, according to which in particular no cavities and connecting webs according to the invention are known, the design with cavities which are formed, among other things, by the connecting webs can further enable better dimensional stability, both with regard to the longevity of the joint profile and with regard to forces acting in the longitudinal and transverse directions.In addition, such a configuration can optionally counteract twisting of the joint profile. The first and / or the second cavity can be continuous in the vertical direction, in particular with a substantially constant cross-section. According to one embodiment, the cross-sectional area of ​​the first cavity can be larger than the cross-sectional area of ​​the second cavity. According to an alternative embodiment, the first cavity can be smaller than the second cavity. According to a preferred embodiment, in particular according to a first preferred embodiment, the ratio of the cross-sectional area of ​​the first cavity to the cross-sectional area of ​​the second cavity can be 1.1 to 3.0, preferably 1.3 to 1.8, particularly preferably 1.5 to 1.7.According to a preferred embodiment, in particular according to a second preferred embodiment, the ratio of the cross-sectional area of ​​the first cavity to the cross-sectional area of ​​the second cavity can be 0.3 to 1.1, preferably 0.6 to 0.9, particularly preferably 0.7 to 0.85. According to a preferred embodiment, in particular according to a third and / or fourth preferred embodiment, the ratio of the cross-sectional area of ​​the first cavity to the cross-sectional area of ​​the second cavity can be 0.5 to 1.2, preferably 0.7 to 1.0, particularly preferably 0.8 to 0.95. According to a preferred embodiment, in particular according to a fifth and / or sixth preferred embodiment, the ratio of the cross-sectional area of ​​the first cavity to the cross-sectional area of ​​the second cavity can be 0.6 to 1.4, preferably 0.9 to 1.2, particularly preferably 1.0 to 1.1.These conditions of the cavities can be particularly advantageous with regard to improved stability in conjunction with a good sealing effect towards the joint opening, in particular through sufficient elastic forces.

[0011] Advantageously, the first connecting web can be connected to or adjoin a distal end of the first side arm facing away from the main web, and / or the second connecting web can be connected to or adjoin a distal end of the second side arm facing away from the main web. In other words, the first side arm can merge into the first connecting web at its distal end and / or be connected to it, and / or the second side arm can merge into the second connecting web at its distal end and / or be connected to it. This can enable particularly good stability and tensile strength while simultaneously providing sufficient flexibility of the joint profile in the longitudinal and / or transverse directions. The respective connecting web and the respective side arm and / or all components enclosing a cavity can preferably be formed in one piece and / or continuously without gaps.Additionally or alternatively, it can be provided that the first connecting web is or connects to the distal end of the second side arm. Alternatively, it can be provided that the first connecting web is or does not connect to the distal end of the second side arm. The second side arm can be divided into two sections by the connection of the first connecting web, wherein an extension of the second side arm from the main web to the center point of the connection of the connecting web to an extension of the second side arm from the center point of the connection to the distal end of the second side arm is 1 / 6 to 4 / 5, preferably 1 / 3 to 3 / 4, particularly preferably 1 / 2 to 2 / 3.Alternatively or additionally, an extension can be connected to the second connecting web, which extends from the connection point of the connecting web to the second side arm with at least one component in the longitudinal direction, in particular the negative longitudinal direction, and / or at least one component in the transverse direction, in particular in the positive transverse direction. The extension can preferably run essentially parallel to the extension of the straight region of the second connecting web. The extension can form a continuous unit with the second connecting web, which can be connected to the second side arm or connected to the second side arm, in particular through the transition region of the second connecting web. Alternatively, the unit comprising the second connecting web and the extension can be connected directly to the second side arm or connected to the second side arm, i.e. in particular without a transition region.By means of the extension and / or by means of a connection of the first connecting web not at the distal end of the second side arm, an additional elastic component in the transverse direction can be made possible, which can, for example, improve the restoring forces of the joint profile when the joint widens (e.g. due to tension), in particular in the transverse direction, and can thus, in particular, enable a more stable contact connection.

[0012] According to the invention, at least three cavities, including the first and second cavities, are enclosed or provided on the first side of the main web. The cross-sectional area ratio of a third cavity to the first cavity can preferably be in the range from 0.1 to 1.4, preferably from 0.2 to 1.2, particularly preferably from 0.4 to 1.1. A third cavity or further cavities formed by joining side arms and / or connecting webs can enable further improved tensile strength of the joint profile in the longitudinal direction as well as further improved restoring force or improved restoring capacity in the transverse direction. According to a very particularly preferred embodiment, in particular according to a fifth or sixth embodiment, the cross-sectional area ratio of the third cavity to the first cavity can be in the range from 0.8 to 1.1.This ratio can be used to support the joint profile to counteract longitudinal displacement within the joint.

[0013] Conveniently, at least two side arms can be arranged on a second side of the main web opposite the first side of the main web, which side arms extend away from the main web on a first side of the main web with a direction of extension that has at least one component in a transverse direction of the profile cross-section, and at least one connecting web that extends between one of the side arms and another of the side arms or the main web, wherein the at least one connecting web, the main web and at least the first side arm and / or the second side arm can enclose at least one, preferably at least two, particularly preferably at least three cavities. All features explained with reference to the first side of the main web can be applied accordingly, in particular mirrored along the longitudinal axis of the main web, to the second side, and vice versa.In particular, the joint profile can also comprise a first and / or a second side arm, a first and / or a second connecting web, and optionally further side arms and / or connecting webs on the second side. Advantageously, the first side of the main web can comprise the same number of side arms, connecting webs, and / or cavities as the second side of the main web.

[0014] Particularly preferably, the joint profile can be designed mirror-symmetrically to the longitudinal axis of the main web. A mirror-symmetrical design can facilitate simplified production and enable a symmetrical development of the restoring forces of the joint profile, thus enabling, in particular, uniform sealing in the transverse direction. Alternatively, it is conceivable for the two sides of the main web to be designed differently from each other.

[0015] Advantageously, the direction of extension of at least one of the side arms, preferably of the majority of the side arms, particularly preferably of all side arms, can also have a component in the longitudinal direction. In particular, the direction of extension can be oriented in the negative longitudinal direction from the base of the side arm and / or the side arms to the respective distal end of the side arm. A component of the extension of a side arm in the longitudinal direction can counteract slipping of the joint profile in the longitudinal direction of the joint. This effect can be further enhanced by multiple side arms with this property. An extension in the negative longitudinal direction can, in particular, effectively counteract slipping out onto the joint opening or the road surface.The side arms can be oriented in relation to the longitudinal extent of the main web such that an angle of the side arms to the main web is 40° to 90°, preferably 45° to 88°, particularly preferably 60° to 85°. According to one embodiment, in particular according to a first or fourth preferred embodiment, the angle of the first side arm to the main web can be between 68° and 78° and the angle of the second side arm to the main web can be between 65° and 75°. According to a further embodiment, in particular according to a second preferred embodiment, the angle of the first side arm to the main web can be between 72° and 82° and the angle of the second side arm to the main web can be between 77° and 87°.According to yet another embodiment, in particular according to a third preferred embodiment, the angle of the first side arm to the main web can be between 63° and 73°, and the angle of the second side arm to the main web can be between 60° and 70°. According to yet another embodiment, in particular according to a fifth and / or sixth preferred embodiment, the angle of the first side arm to the main web can be between 73° and 83°, and the angle of the second side arm to the main web can be between 63° and 73°. These orientation ratios can each be particularly favorable with regard to the flexibility and stability of the joint profile.

[0016] Advantageously, the maximum extension of the joint profile in the transverse direction can be in a ratio of 0.1 to 0.9, preferably 0.3 to 0.8 and particularly preferably 0.4 to 0.7. These ratios can enable particularly good stability of the joint profile, particularly in interaction with the side arms and the connecting webs. For common joint widths in road construction, e.g. of approx. 8 mm wide in the transverse direction and approx. 30 cm high in the longitudinal direction, a ratio of 0.3 to 0.8 can counteract slipping out in the longitudinal direction. A ratio of 0.4 to 0.7 can also enable good restoring forces of the joint profile for expected horizontal joint movements in the transverse direction of e.g. up to 7 mm.Furthermore, advantageously, a maximum extension of the joint profile in the longitudinal direction to a maximum extension of the joint profile in the transverse direction can be in a ratio of 0.1 to 0.9, preferably 0.3 to 0.8 and particularly preferably 0.4 to 0.7.

[0017] Advantageously, the joint profile can comprise a third side arm which extends away from the main web on the first side of the main web with a direction of extension which has at least one component in a transverse direction of the profile cross-section perpendicular to the longitudinal direction. The direction of extension of the third side arm can additionally have a component in the longitudinal direction, in particular a positive longitudinal direction. Preferably, the connection point of the third side arm to the main web can be arranged closer to the first end of the joint profile in the longitudinal direction than the connection point of the first and / or the second side arm. In other words, the third side arm can be arranged in the positive longitudinal direction as viewed from the first and / or second side arm. The third side arm can provide improved stability against slipping of the joint profile in the longitudinal direction, in particular against slipping in or out.Sagging of the joint profile into the joint. Advantageously, an extension of the first and / or the second side arm from its attachment to the main web to its distal end can have a direction of extension which has a component in the negative longitudinal direction, and wherein an extension of the third side arm from its attachment to the main web to its distal end has a direction of extension which has a component in the positive longitudinal direction. The extension of the side arm can be oriented to the extension of the main web such that the two directions of extension preferably enclose an angle of 10° to 85°, preferably of 30° to 80°, particularly preferably of 45° to 75°. This angular range can result in particularly good stability of the third side arm and, in particular when the joint profile is arranged in the joint, can serve to ensure the positional stability of the joint profile.In particular, the third side arm according to this embodiment can act as a kind of barb which, when the joint profile is arranged in a joint, especially in the case of widened joints, e.g. in winter, can counteract a contact force in the positive longitudinal direction.

[0018] According to the invention, a first end region enclosing a cavity is arranged at a first end of the joint profile, viewed in the longitudinal direction, adjacent to the main web. The first end region can preferably be arranged essentially centrally in the transverse direction. It has been shown that the first end region can advantageously counteract the joint profile from slipping into the joint (in the positive longitudinal direction). The cavity enclosed by the first end region can have a cross-section essentially shaped like a segment of a circle, in particular essentially a quarter-circle, and / or essentially triangular. A center point of the circle segment and / or one of the corners of the triangle can be oriented in the direction of the main web. The cavity can have rounded corners in cross-section.Alternatively, the cavity can be quarter- or half-moon-shaped, with the open side of the moon in particular being oriented towards the main web. A half-moon shape can facilitate insertion of the joint profile into a joint. The ratio of the cross-sectional area of ​​the cavity enclosed by the first end region to the product of the maximum extension of the joint profile in the transverse direction and the maximum extension of the joint profile in the longitudinal direction can preferably be in the range from 0.001 to 0.040, preferably 0.050 to 0.030, particularly preferably 0.010 to 0.025. A maximum extension of the first end region in the transverse direction to a maximum extension of the joint profile in the transverse direction can preferably be in a ratio of 0.1 to 0.8, preferably 0.2 to 0.7, particularly preferably 0.3 to 0.6.A maximum extension of the first end region in the longitudinal direction (in particular measured from the end of the cavity enclosed by the first end region adjacent to the main web to the end of the first end region facing away from the main web in the longitudinal direction) to an extension of the main web in the longitudinal direction can be in a ratio of 0.05 to 0.30, preferably 0.1 to 0.25, particularly preferably 0.12 to 0.20. These geometric features of the first end section can each particularly effectively counteract slipping of the joint profile into the joint.

[0019] Advantageously, the first end region can be convexly curved outwards at its end facing away from the main web. Such a convex design of the first end region can enable particularly good adaptation and positional stability of the joint profile in a joint, particularly in the longitudinal direction. When forming a joint (typically with a width of 8 mm, for example), a deeper crack with a smaller width (e.g., approx. 3 mm wide) usually or frequently forms beneath the joint gap. The convex shape of the first end region can, for example, partially protrude into the deeper crack, with further sagging being counteracted by the first end region. In particular, a radius of curvature of the convex curvature can have a ratio of 0.01 to 0.50, preferably 0.05 to 0.20, particularly preferably 0.12 to 0.14 to the extension of the joint profile in the longitudinal direction.This ratio has proven to be particularly effective in preventing the joint profile from sagging for standard joint dimensions.

[0020] At a second end of the joint profile, viewed in the longitudinal direction, a second end region is arranged adjacent to the main web, wherein the second end region has a main extension in the transverse direction. Advantageously, the second end region according to the invention can reduce noise pollution of the joint profile when rolling over. The second end region can be mirror-symmetrical with respect to a longitudinally extending central axis (in particular corresponding to the extension direction of the main web) of the joint profile. The side of the second end region facing away from the main web or the side of the second end region pointing in the negative longitudinal direction can be an end surface and / or a driving surface of the joint profile, which is designed in particular to be flush with the road surface. Advantageously, the second end region can enable sealing of the surface, in particular due to its extension in the transverse direction.An extension of the second end region in the transverse direction to a maximum extension of the joint profile in the transverse direction can preferably be in a ratio of 0.7 to 1.0, preferably 0.85 to 1.00, particularly preferably 0.92 to 1.00. This allows particularly effective sealing. An extension of a large part of the second end region in the longitudinal direction to an extension of the main web in the transverse direction can preferably be in a ratio of 0.1 to 1.2, preferably 0.2 to 1.0, particularly preferably 0.4 to 0.7. An extension of a large part of the second end region in the longitudinal direction to an extension of the second end region in the transverse direction can be in a ratio of 0.04 to 0.095, preferably 0.05 to 0.085, particularly preferably 0.06 to 0.08. A large part in this sense means in particular that more than 50 percent of the second end region, seen in the transverse direction, has this extension.Such a ratio can enable sufficiently good stability of the second end region with a good sealing effect without consuming an excessive amount of material. Distal ends of the second end region in the transverse direction can be tapered in the positive or negative longitudinal direction with respect to the transverse direction. This can bring about a better sealing effect towards the road surface and / or a better adaptation of the joint profile to the joint cross-section. According to one embodiment, in particular according to a sixth embodiment, the second end region can be at least partially curved. In particular, a curvature of the second end region can be more pronounced in the region of the main web than in a region of the second end region facing away from the main web in the transverse direction.The second end region can be curved in the vicinity of the main web, in particular along approximately one-third of its extension in the transverse direction from the main web, and in particular can otherwise be substantially straight. Preferably, the extension of the substantially straight region can have a component in the longitudinal direction and a component in the transverse direction. Preferably, the curvature of the second region is convex toward the second end.

[0021] The second end region can expediently have a recess on a side facing away from the main web in the longitudinal direction, wherein the recess is arranged in particular substantially centrally when viewed in the transverse direction. The recess can, for example, enable improved adaptability to a joint width that changes over time in combination with suitable restoring forces in the transverse direction. An average width of the recess, viewed in the transverse direction, can be in a ratio of 0.01 to 0.30, preferably 0.04 to 0.25, particularly preferably 0.06 to 0.18, to a maximum extension of the joint profile in the transverse direction. Alternatively or additionally, the second end region can comprise a connecting region that connects the second end region to the main web, wherein the connecting region can protrude beyond the majority of the second end region in the longitudinal direction towards the main web.The connection region can in particular comprise two web sections, wherein the web sections preferably have an extension with a component in the longitudinal direction and a component in the transverse direction. The web sections can preferably be designed to converge in the positive longitudinal direction towards a central axis of the joint profile that is parallel to the longitudinal direction. Particularly preferably, the web sections can adjoin the main web, wherein the web sections are brought together in particular in the connection region to the main web and / or form side walls of the recess. The recess can have a greater extension in the longitudinal direction than the majority of the second end region, in particular extending over the connection region to the main web.

[0022] The joint profile comprises an end connecting web which extends between the second end region and one of the side arms, in particular the first side arm, such that a hollow space is enclosed by the second end region, the side arm, and the main web. Advantageously, the end connecting web can enable stabilization of the second end region, in particular by forming the hollow space. Without the end connecting web, the second end region can bend upwards when the joint profile is inserted into a joint, as a result of which end lips of the second end region can protrude above the joint. Instead, the end connecting web can advantageously form a bulge in the hollow space, which can prevent protruding end lips. Advantageously, this can also improve stability and reduce the susceptibility of the joint profile to wear during use.The end connecting web can be connected to the distal end of the side arm. In particular, the end connecting web can be connected to the distal end of the first side arm in such a way that the end connecting web continues the course of the first connecting web in the negative longitudinal direction and / or runs essentially parallel to the first connecting web, at least in the connection region to the first side arm. Additionally or alternatively, the end connecting web can comprise a straight section and a curved section adjoining the straight section. The straight section can preferably connect to the first side arm. The curved section can preferably connect to the second end region. A circle center defined by the curved section can preferably lie on the side of the curved section facing away from the main web.In particular, the curved section can be curved such that a substantial part of the curved section is arranged closer to the main web than the straight section. In other words, a curved ridge formed by the curvature can point toward the main web. Alternatively, it can be provided that the end connecting web is connected to or adjoins a region of the side arm, in particular the first side arm, which is not its distal end. At the connection point of the end connecting web with the second end region and as part of the cavity, a part-circular recess can be provided in the end connecting web and / or the second end region.The side arm can be divided into two sections by the connection of the end connecting web, wherein an extension of the side arm from the main web to the center point of the connection to an extension of the side arm from the center point of the connection to the distal end of the side arm is 1 / 6 to 4 / 5, preferably 1 / 4 to 3 / 4, particularly preferably 1 / 3 to 2 / 3 and most particularly preferably substantially 1 / 2. At the connection point of the end connecting web to the side arm, in particular on an outer side of the joint profile, a part-circular recess can be provided in the end connecting web and / or the side arm. The end connecting web can connect to the second end region in the transverse direction at a first distal end of the second end region. Alternatively, the end connecting web can preferably be connected to or connect to a region of the second end region which is not its distal end.The second end region on one side of the main web can be divided into two sections by the connection of the end connecting web, wherein a distance from the center point of the main web (viewed in the transverse direction) to the center point of the connection to an extension of the second end region from the center point of the connection to the distal end of the second end region is 1 to 5, preferably 1.5 to 3, particularly preferably 1.8 to 2.2. The end connecting web can advantageously enable, in particular, greater tensile strength of the joint profile and / or the second end region in the longitudinal direction as well as greater stability of the second end region in the transverse direction. The end connecting web can preferably be oriented such that its extension from the second end to the side arm has a component in the positive longitudinal direction and a component in the transverse direction directed towards the main web.According to one embodiment, the end connecting web can preferably be arranged in relation to the main web such that the angle between the end connecting web and the main web is 30° to 60°. Alternatively, the angle between the end connecting web and / or the straight section of the end connecting web and the main web can be 0° to 15°, preferably 0° to 10°. Advantageously, the joint profile can comprise a further end connecting web which extends between the second end region and a further one of the side arms, in particular the first side arm on the second side of the joint profile, such that a hollow space is enclosed by the second end region, the further side arm, and the main web. In other words, the joint profile can preferably comprise an end connecting web on both the first side and the second side of the main web.All features and advantages mentioned for the end connecting bridge can also apply analogously to the other end connecting bridge.

[0023] Advantageously, the joint profile can be made of an elastic material, in particular a rubber material, preferably a synthetic rubber, particularly preferably ethylene propylene diene rubber (EPDM). A joint profile made of an elastic material can ensure sealing in the transverse direction even when the joint width changes over time. A rubber material can be particularly well suited for this purpose. A synthetic rubber can be particularly easy to manufacture. EPDM can be particularly advantageous with regard to tensile strength as well as elasticity, stability and durability. Furthermore, a design made of EPDM can have good ozone resistance, in particular without ozone-induced cracking, as well as reduced aging under atmospheric conditions. For example, a change in hardness over a longer period of time, e.g.It should be maintainable for more than one year, within a range of -5% to +5%, and changes in tensile strength and elongation at break can also advantageously be limited. Furthermore, the joint profile made of EPDM can exhibit a recovery capacity of at least 75% in a temperature range of -20°C to +70°C, with the percentage indicating in particular the deformation, in particular elongation and / or compression, from which the joint profile can elastically return to its original shape without permanent damage upon subsequent relaxation.

[0024] Advantageously, the joint profile can comprise a vertical thread incorporated into the joint profile. The vertical thread extends in particular in the vertical direction. The vertical thread can, for example, be extruded or cast into the profile. The vertical thread can be designed as an anti-stretch thread. Preferably, the vertical thread is non-elastic or has a lower elasticity and / or is made of a different material than the main part of the joint profile. Advantageously, the vertical thread can counteract stretching of the joint profile, in particular in the vertical direction, and thus in particular prevent the formation of gaps due to warping of the joint profile in the joint. Preferably, the vertical thread is arranged essentially centrally when viewed in the transverse direction.Advantageously, the distance between the center of the vertical thread and the closer end of the joint profile in the longitudinal direction (in particular the first end or the second end) can have a ratio of 0.05 to 0.04, preferably 0.1 to 0.3, particularly preferably 0.15 to 0.25, to the maximum extension of the joint profile in the longitudinal direction. According to a preferred embodiment, in particular according to a preferred first and / or fourth embodiment, the distance between the center of the vertical thread and the first end can have a ratio of 0.17 to 0.21, as viewed in the longitudinal direction. According to an alternative preferred embodiment, in particular according to a preferred second embodiment, the distance between the center of the vertical thread and the second end can have a ratio of 0.21 to 0.25, as viewed in the longitudinal direction, to the maximum extension of the joint profile.

[0025] A further aspect is a road surface system comprising at least one base slab, in particular a concrete slab, with at least one parting joint, wherein a joint profile as described herein is arranged in the parting joint, wherein the longitudinal direction of the joint profile is oriented substantially in the direction of a depth extension of the parting joint. The parting joint can, for example, have a width of 6 to 10 mm, preferably 7 to 9 mm, and particularly preferably approximately 8 mm (in particular with a maximum deviation of 10%, preferably a maximum of 5%), and a depth of 15 to 40 mm, preferably 20 to 35 mm, and particularly preferably 25 to 32 mm. The joint can continue below the specified depth in a less wide form, in particular with a width of 0 to 5 mm, preferably 1 to 4 mm, particularly preferably substantially 3 mm. The joint profile is preferably arranged such that the transverse direction corresponds to the width of the joint.The base plate can, in particular, be part of a road surface. Advantageously, the joint profile can prevent or reduce the penetration of contaminants, e.g., water, into the lower layers of the road surface, especially the base layers. All advantages, designs, and features of the joint profile can be applied analogously to the road surface system, and vice versa.

[0026] Further advantages and features of the invention will become apparent from the following description of preferred embodiments of the subject matter of the invention with reference to the accompanying figures. The following description serves only to clarify the invention and should not be construed as limiting the appended claims to any one of the embodiments. Fig. 1 a joint profile according to a first preferred embodiment of the invention, Fig. 2a perspective view of the joint profile according to the first preferred embodiment of the invention, Fig. 3 a plan view of a road surface system according to an embodiment of the invention, Fig. 4 a joint profile according to a second preferred embodiment of the invention, Fig. 5 a joint profile according to a third preferred embodiment of the invention, Fig. 6 a joint profile according to a fourth preferred embodiment of the invention, Fig. 7 a joint profile according to a fifth preferred embodiment of the invention, Fig. 8 a joint profile according to a sixth preferred embodiment of the invention, Fig. 9 a joint profile according to a further embodiment of the invention, which is inserted into a joint and Fig. 10 a joint profile according to yet another embodiment of the invention, which is inserted into a joint.

[0027] Figure 1shows a joint profile 1 according to a first preferred embodiment of the invention. The joint profile 1 has a longitudinal extension in a longitudinal direction L and a transverse extension in a transverse direction Q. The joint profile 1 can in particular be designed as a continuous material extending in a vertical direction V. By a main web 2, which extends in the longitudinal direction L, the joint profile 1 is divided into a first side S1 and a second side S2. In this first embodiment, as well as in the other embodiments shown, the joint profile 1 is designed to be mirror-symmetrical about the main web. The description for the first side S1 and the second side S2 is therefore equivalent. However, the joint profile 1 according to the invention does not necessarily have to be limited to this mirror symmetry.

[0028] At a first end 51, viewed in the longitudinal direction L, the joint profile 1 has a first end region 30 which encloses a cavity 32. The cavity 32 is formed here according to a circular segment with rounded corners. The first end region 30 has a convex end 34, which forms the first end 51 of the joint profile 1. The first end region 30 has a longitudinal extension 36 which is in a ratio of 0.14±0.05 to a maximum longitudinal extension of the joint profile. Viewed in the longitudinal direction L, below the first end region 30, a third side arm 8 adjoins the main web 2 on both sides S1, S2. The extension of the third side arms 8 each has a component in the positive longitudinal direction L and a component in the transverse direction Q away from the main web 2. The first side arm 4 and the second side arm 6, on the other hand, have an extension which has a component in the negative longitudinal direction L.The extension of these two side arms 4, 6 also has an extension component in the transverse direction Q away from the main web 2. The first side arms 4 are each connected to the second side arms 6 on their side S1, S2 by a first connecting web 14. The second side arms 6, on the other hand, are each connected to the main web 2 via a second connecting web 16. The first connecting web 14 adjoins the distal end 5 of the first side arm 4 with a straight region 12. The straight region 12 of the first connecting web 14 merges into a curved region 13, which in turn adjoins the second side arm 6. In the positive longitudinal direction L, a straight region 18 of the second connecting web 16 adjoins the second side arm. The second connecting web 16 orwhose straight region 18 also merges in the negative longitudinal direction L into an extension 17 which, viewed in the negative longitudinal direction L, continues the second connecting web 16 beyond the connection to the second side arm 6 and runs partially in the transverse direction Q next to the first connecting web 14. On the other side, in the positive longitudinal direction L, the straight region 18 merges into a curved region 19 of the second connecting web 16, wherein the curved region 19 is curved towards the main web 2 and connects to the main web 2. Viewed in the longitudinal direction L, approximately centrally between the connections of the third side arms 8 and the connections of the second connecting webs 16, a vertical thread 38 runs through the main web 2 and serves as an anti-expansion thread to stabilize the joint profile 1 in the vertical direction V.

[0029] At a second end 52 in the longitudinal direction L, the joint profile 1 comprises a second end region 40 which extends essentially in the transverse direction Q. The side of the second end region 40 facing the second end 52 forms an end surface which, when inserted, is flush with the road surface. The second end region 46 has a central recess 46 in the transverse direction Q. Distal ends of the second end region 40 facing away from the center of the joint profile 1 in the transverse direction Q are each connected to the first side arms 4 on their side S1, S2 via end connecting webs 44. The end connecting webs 44 do not connect to the distal end 5 of the first side arms 4, but to a region of the side arms 4 which, viewed in the transverse direction, is arranged closer to the main web 2.In this embodiment, the ratio of the distance from the connection of the end connecting web 44 to the first side arm 4 to the main web 2 to the distance from the connection of the end connecting web 44 to the distal end 5 of the first side arm along the side arm is approximately 0.5±0.1, starting from the nearest edge of the end connecting web 44.

[0030] On each of the two sides S1, S2, the first connecting web 14, together with the first side arm 4, the second side arm 6, and the main web 2, forms a first cavity 24. Furthermore, the second connecting web 16, together with the second side arm 6 and the main web 2, forms a second cavity 26. Finally, a third cavity 42 is formed on each of the sides S1, S2 by the end connecting web 44, together with the second end region 40 and the main web 2. The cavities 24, 26, 32, and 42 extend continuously in the vertical direction V. The angles of the connecting webs 44 with respect to the longitudinal axis of the main web 2 or to the longitudinal direction L are shown in dashed lines. The angle α1 of the first side arm 4 is approximately 74°±5°, the angle α2 of the second side arm 6 is approximately 70°±5° and the angle α5 of the third side arm 8 is approximately 60°±12°.The third side arm 8 is aligned longitudinally opposite to the other two side arms 4, 6. The angle α3 of the first connecting web 14 is approximately 12°±5°, the angle α4 of the second connecting web 16 is approximately 12°±5°, and the angle α4 of the end connecting web 44 is approximately 54°±5°.

[0031] Figure 2 shows a perspective view of a joint profile 1 according to the first preferred embodiment of the invention. The joint profile 1 is rolled up onto a roll as a continuous material.

[0032] Figure 3 shows a plan view of a road surface system 100 according to an embodiment of the invention. The road surface system 100 includes a base plate 102 with separating joints 104 in the form of transverse joints and longitudinal joints.

[0033] In the separating joints 104, joint profiles 1 according to the invention are arranged with their second end region 40 pointing towards the road surface.

[0034] In the Figures 4 and 5 A joint profile 1 according to a second and a third preferred embodiment is shown. These two embodiments differ from the one shown in Figure 1shown embodiment in particular by a differently designed first end region 30 and by the absence of the third side arms 8. The cavity 32 of the first end region 30 is here, as is the first end region 30 itself, approximately crescent-shaped. The first connecting webs 14 also do not have a curved region 13, but only a continuous straight region 12. Instead, the second connecting webs 16 have a curved transition region 20, which adjoins the second side arms 6. Between this transition region 20 and the curved region 19, which adjoins the main web, the second connecting webs 16 have a substantially straight region 18, which merges into the curved region 19. While in Figure 5 shown third embodiment also has end connecting webs 44 similar to the embodiment in Figure 1 has, the Figure 4shown second preferred embodiment no end connecting webs 44. The embodiment of the Figure 4 also has a vertical thread which is arranged centrally on the main web 2 approximately between the first side arms 4.

[0035] Figure 6 shows a fourth preferred embodiment of a joint profile 1, which is one of the first preferred embodiments shown in Figure 1 shown, and also has a third side arm 8 on each side S1, S2. This embodiment differs from the first embodiment in particular in that the first connecting web 14 does not have a curved region 13. However, analogous to the second and third embodiments, the second connecting web 16 has a curved transition region 20, which adjoins the second side arm.

[0036] The Figure 7shows a fifth preferred embodiment and the Figure 8 shows a sixth preferred embodiment. The fifth and sixth embodiments differ from the one shown in Figure 6shown fourth embodiment by the lower part, namely in particular with regard to their end connecting webs 44 and the second end region 40. In these embodiments, the end connecting webs 44 each adjoin the distal end 5 of the first side arms 4 in such a way that the end connecting webs 44 continue the course of the first connecting web 14 in the negative longitudinal direction L or run essentially parallel to the first connecting web 14 in the connection region to the first side arm 1. The end connecting webs 44 each consist of a straight section and a curved section adjoining the straight section. The straight section adjoins the first side arm 4 and the curved section adjoins the second end region 40. The curved section is curved in such a way that a substantial part of the curved section is arranged closer to the main web 2 than the straight section.In both embodiments, fifth and sixth, the end connecting webs adjoin a portion of the second end portion that is not its distal end. While the second end portion 40 in the embodiment shown in . Figure 7 shown embodiment is designed to be substantially straight in the transverse direction, the second end region 40 of the Figure 8 In the sixth embodiment shown, the second end region 40 is partially curved, with the curvature of the second end region 40 being more pronounced in the region of the main web 2 than in a region of the second end region 40 facing away from the main web 2 in the transverse direction. The curvature is convex toward the second end. The extension of the essentially straight region of the second end region 40 has both a longitudinal component and a transverse component, so that the second end region 40 points slightly upward at its ends in this illustration.

[0037] The various designs also differ slightly in their dimensions and the orientation of their side arms and connecting webs. The angles of the side arms and connecting webs are summarized in the following table. These values ​​can enable particularly good properties of the joint profile, in particular including tensile strength in the longitudinal direction L and resilience in the transverse direction Q. 1. Embodiment 2. Embodiment 3. Embodiment 4. Embodiment 5. Embodiment 6. Embodiment α1 74°±5° 78°±5° 68°±5° 72°±5° 78°±5° 77°±5° α2 70°±5° 82°±5° 65°±5° 69°±5° 69°±5° 69°±5° α3 19°±5° 13°±5° 14°±5° 13°±5° 15°±5° 15°±5° α4 12°±5° 15°±5° 16°±5° 15°±5° 15°±5° 15°±5° α5 60°±12° - - 60°±12° 60°±12° 60°±12° α6 54°±5° - 35°±5° 34°±5° 5°±5° 6°±5°

[0038] The Figures 9 and 10 each show a joint profile 1 according to further embodiments of the invention, which is used in a joint 104. The Figure 10The embodiment shown has end connecting webs 44, the embodiment shown in Figure 9 has no end connecting webs 44. The end connecting webs have the advantage that the ends of the second end region 40 are prevented from protruding at the upper part of the joint 104, as is shown in the embodiment shown in Figure 9 shown embodiment without end connecting web 44 is the case. List of reference symbols:

[0039] 1 Joint profile 2 Main web 4 First side arm 5 Distal end of the first side arm 6 Second side arm 7 Distal end of the first side arm 8 Third side arm 12 Straight section of the first connecting web 13 Curved section of the first connecting web 14 First connecting web 16 Second connecting web 17 Extension of the second connecting web 18 Straight section of the second connecting web 19 Curved section of the second connecting web 20 Transition section of the second connecting web 24 First cavity 26 Second cavity 30 First end section 32 Cavity of the first end section 34 Convex end of the first end section 36 Longitudinal extension of the first end section 38 Vertical thread 40 Second end section 42 Third cavity 44 End connecting web 46 Recess 51First end 52Second end 100Road surface system 102Base slab 104Parting joint LLongitudinal direction QTransverse direction VVertical direction S1first side S2second side α1Angle between first side arm and main web α2Angle between second side arm and main web α3Angle between first connecting web and main web α4Angle between second connecting web and main web α5Angle between third side arm and main web α6Angle between end connecting web and main web

Claims

1. A joint profile (1), in particular for joints in road surfaces, comprising a main web (2) extending in a longitudinal direction (L) of the profile cross-section, at least a first and a second side arm (4, 6) extending on a first side of the main web (2) away from the main web (2) with a direction of extension, which has at least one component in a transverse direction (Q) of the profile cross-section, at least one first connecting web (14) which extends between a first of the side arms (4) and a second of the side arms (6), so that a first cavity (24) is enclosed by the first side arm (4), the second side arm (6), the first connecting web (14) and the main web (2) and at least one second connecting web (16), which extends between the second of the side arms (6) and the main web (2), so that a second cavity (26) is enclosed by the second connecting web (16), the second of the side arms (6) and the main web, wherein a first end region (30) enclosing a cavity (32) is arranged at a first end (51) of the joint profile (1), as seen in the longitudinal direction (L), adjacent to the main web (2), wherein a second end region (40) is arranged at a second end (52) of the joint profile (1), as seen in the longitudinal direction (L), adjacent to the main web (2), wherein the second end portion (40) has a main extension in the transverse direction (Q), wherein the joint profile comprising an end connecting web which extends between the second end portion (40), in particular a first distal end of the end portion (40) in the transverse direction (Q), and one of the side arms, so that a cavity is enclosed by the second end portion (40), the side arm and the main web (2).

2. Joint profile (1) according to claim 1, wherein the first connecting web (14) is connected to a distal end (5) of the first side arm (4) facing away from the main web (2), and / or wherein the second connecting web (16) is connected to a distal end (7) of the second side arm (6) facing away from the main web (2).

3. Joint profile (1) according to one of the preceding claims, wherein at least three cavities, including the first and second cavities (24, 26), are enclosed on the first side (S1) of the main web (2).

4. Joint profile (1) according to one of the preceding claims, wherein on a second side (S2) of the main web (2) opposite the first side (S1) of the main web (2) at least two side arms (4, 6), which extend on a second side (S2) of the main web (2) away from the main web (2) with a direction of extension which has at least one component in a transverse direction (Q) of the profile cross-section, are arranged, and at least one connecting web (14, 16), which extends between one of the side arms (4, 6) and another of the side arms (4, 6) or the main web (2), are arranged, wherein the at least one connecting web (14, 16), the main web (2) and at least the first side arm (4) and / or the second side arm (6) enclose at least one, preferably at least two, particularly preferably at least three, cavities.

5. Joint profile (1) according to one of the preceding claims, wherein the direction of extension of at least one of the side arms (4, 6, 8), preferably of the plurality of side arms, particularly preferably of all side arms, also has a component in the longitudinal direction (L).

6. Joint profile (1) according to one of the preceding claims, wherein a maximum extension of the joint profile (1) in the transverse direction (Q) is in a ratio of 0.1 to 0.8, preferably 0.3 to 0.7 and particularly preferably 0.4 to 0.6, to a maximum extension of the joint profile (1) in the longitudinal direction (L).

7. A joint profile (1) according to any one of the preceding claims, comprising a third side arm (8) extending on the first side (S1) of the main web (2) away from the main web (2) with an extension direction having at least one component in a transverse direction (Q) of the profile cross-section.

8. Joint profile according to claim 7, wherein in the unloaded state of the joint profile (1) an extension of the first and / or the second side arm (4, 6) from its attachment to the main web (2) to its distal end has a direction of extension, which has a component in the negative longitudinal direction (L) and wherein, in the unloaded state of the joint profile (1), an extension of the third side arm (8) from its attachment to the main web (2) to its distal end has an extension direction which has a component in the positive longitudinal direction (L).

9. Joint profile (1) according to one of the preceding claims, wherein the first end region (30) is convexly curved outwards at its end (34) facing away from the main web (2).

10. Joint profile according to one of the preceding claims, wherein the second end region (40) has a recess on a side facing away from the main web in the longitudinal direction (L), wherein the recess is arranged substantially centrally when viewed in the transverse direction (Q).

11. Joint profile according to one of the preceding claims, wherein the joint profile (1) is made of an elastic material, in particular of a rubber material, preferably of a synthetic rubber, particularly preferably of ethylene-propylene-diene rubber.

12. Road surface system (100), comprising at least one floor slab, in particular concrete slab, with at least one separating joint, wherein a joint profile (1) according to one of the preceding claims is arranged in the separating joint, wherein the longitudinal direction (L) of the joint profile (1) is substantially aligned in the direction of a depth extension of the separating joint.