Cement blanket pavement structure

Abstract

The utility model relates to the technical field of cement blankets, in particular to a cement blanket pavement structure. Comprising at least two cement blankets, and every two adjacent cement blankets are in lap joint to form a lap joint area. Ground anchors are arranged on the lap joint area, penetrate through the two cement blankets and are anchored into the roadbed; u-shaped nails are arranged on the non-lap-joint area outside the lap-joint area, penetrate through a cement blanket and are anchored into the roadbed, and the U-shaped nails are arranged in a plum blossom shape on the plane. The two adjacent cement blankets are arranged in a lap joint mode to form the lap joint area, the lap joint area is fixed through the ground anchors, and the non-lap joint area is fixed through the U-shaped nails, so that the connection strength of the cement blankets and a roadbed can be greatly improved, and the anti-sliding capacity of the cement blanket pavement is improved; the approximate position of the cement blanket can be rapidly fixed through the ground anchors, and accurate installation of a follow-up fixing structure is facilitated; the U-shaped nail comprises the two nailing parts which are connected with each other, the density of the nailing structure can be increased, the U-shaped nail can be conveniently pulled out through the connecting part of the U-shaped nail, and the cement blanket can be conveniently dismantled in the later period.

Description

Technical Field

[0001] This utility model relates to the field of cement blanket technology, and in particular to a cement blanket pavement structure. Background Technology

[0002] Concrete cement blanket is an innovative building material that combines the properties of cement and textiles. It can rapidly harden into a concrete layer when wet, making it suitable for various applications such as ditch lining, slope protection, and pipeline protection. Recent research shows that concrete cement blanket has comparable hardness and service life to traditional cement, but it simplifies the construction process, reduces cumbersome steps, saves human resources, and lowers production costs for enterprises, demonstrating considerable application potential.

[0003] Because the construction process of cement blanket is relatively simple, those skilled in the art thought of applying it to the hardening construction of emergency pavements. However, during the laying and testing of cement blanket, technicians found that the connection strength between the existing cement blanket pavement structure and the roadbed surface did not meet the requirements. When vehicles drive on the cement blanket, the reaction force of the vehicles on the cement blanket may cause the cement blanket to slip relative to the roadbed. This greatly restricts the improvement of the load-bearing capacity of the cement blanket and makes it difficult for the cement blanket pavement to meet safety standards. Utility Model Content

[0004] The purpose of this invention is to overcome the problem of cement blankets easily slipping relative to the roadbed in the prior art, and to provide a cement blanket pavement structure.

[0005] In a first aspect, the present invention provides a cement blanket pavement structure, comprising at least two cement blankets, wherein two adjacent cement blankets overlap to form an overlap area;

[0006] An anchor is provided in the overlapping area, and the anchor passes through two cement blankets and is anchored into the roadbed;

[0007] U-shaped nails are provided in the non-overlapping area outside the overlapping area. The U-shaped nails pass through a cement blanket and are anchored into the roadbed. On the plane, the U-shaped nails are arranged in a quincunx pattern.

[0008] This utility model provides a cement blanket pavement structure, using cement blanket as the pavement structure on the roadbed. Before watering and hardening, the cement blanket is a flexible fabric structure, which can be easily transported and laid in designated locations. After watering and hardening, the cement blanket has high hardness and strength, enabling rapid road hardening. By overlapping two adjacent cement blankets to form an overlap area, the overlap area is fixed by anchor nails, and the non-overlap area is fixed by U-shaped nails, which can significantly improve the connection strength between the cement blanket and the roadbed and improve the anti-slip ability of the cement blanket pavement. The anchor nails are easy to install, and the approximate position of the cement blanket can be quickly fixed by the anchor nails, which facilitates the accurate installation of subsequent fixing structures. The U-shaped nail includes two connected nail insertion parts, which can increase the density of the nail insertion structure and improve the fixing effect. The connecting part of the U-shaped nail also makes it easy to pull out the U-shaped nail, which is convenient for the later removal of the cement blanket.

[0009] The cement blanket pavement structure described in this utility model is suitable for complex geographical environments such as mountain trails, desert areas, and tidal flats, providing an innovative and efficient solution for rapid road paving. It can also be used for road hardening in emergency situations such as natural disasters, such as earthquakes, rainstorms, and landslides.

[0010] Preferably, a recess is provided below the overlapping area, and the depth of the recess corresponds to the thickness of one of the cement blankets;

[0011] Of the two cement blankets in the overlapping area: one cement blanket is located inside the recess, and the other cement blanket covers the opening of the recess.

[0012] Preferably, the depth of the pit is equal to the thickness of the cement blanket.

[0013] Preferably, the surfaces of the two cement blankets in the overlapping area are coated with sealant or plain ash.

[0014] Preferably, cement ash is sprinkled at the joints and seams of the two cement blankets.

[0015] Preferably, the cement blanket is a needle-punched cement blanket or a three-dimensional spaced fabric cement blanket.

[0016] Preferably, the length of the anchor is greater than or equal to four times the thickness of the cement blanket.

[0017] Preferably, the length of the anchor is greater than or equal to 50cm, the spacing between the anchors is less than or equal to 10cm, the spacing between adjacent U-shaped anchors is 2 to 3 meters, the thickness of the cement blanket is greater than or equal to 10cm, and the width of the overlap area is greater than or equal to 10cm.

[0018] Preferably, the cement blanket comprises a fiber web and dry concrete.

[0019] Preferably, the U-shaped nail includes two spaced-apart nailing portions and a connecting portion connecting the two nailing portions;

[0020] The two nail-in portions pass through the cement blanket and are anchored into the roadbed, and the connecting portion is located above the cement blanket.

[0021] Preferably, the roadbed is tidal flat, desert soil, or mud.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This utility model provides a cement blanket pavement structure, using cement blankets as the pavement structure on the roadbed. Before watering and hardening, the cement blankets are flexible fabric structures, facilitating easy transportation and laying at designated locations. After watering and hardening, the cement blankets possess high hardness and strength, enabling rapid road hardening. By overlapping adjacent cement blankets to form an overlap area, which is fixed by anchors, and the non-overlapping areas are fixed by U-shaped nails, the connection strength between the cement blankets and the roadbed is significantly improved, enhancing the anti-slip capability of the cement blanket pavement. Anchors are easy to install, quickly fixing the approximate position of the cement blankets for accurate installation of subsequent fixing structures. The U-shaped nails include two connected nail insertion parts, increasing the density of the nailing structure and improving the fixing effect. The connecting parts of the U-shaped nails also facilitate easy removal, making it convenient to dismantle the cement blankets later. The cement blanket pavement structure described in this utility model is suitable for complex geographical environments such as mountain roads, desert areas, and tidal flats, providing an innovative and efficient solution for rapid road paving. It can also be used for road hardening in emergency situations such as natural disasters like earthquakes, rainstorms, and landslides. Attached Figure Description

[0024] Figure 1 This is a schematic diagram (top view) showing the layout of the cement blanket pavement structure described in this utility model.

[0025] Figure 2 This is a cross-sectional view of the cement blanket and roadbed described in this utility model;

[0026] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0027] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0028] Marked in the image:

[0029] 1-Cement blanket; 2-Overlap area; 3-Anchor nail; 4-U-shaped nail; 41-Insertion part; 42-Connection part; 5-Pit; 6-Roadbed. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0031] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0033] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0034] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0035] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0036] Example 1

[0037] like Figures 1 to 4 As shown, this embodiment provides a cement blanket pavement structure, including at least two cement blankets 1, with two adjacent cement blankets 1 overlapping to form an overlap area 2; anchor nails 3 are provided on the overlap area 2, the anchor nails 3 pass through the two cement blankets 1 and are anchored into the roadbed 6; U-shaped nails 4 are provided on the non-overlapping area outside the overlap area 2, the U-shaped nails 4 pass through one of the cement blankets 1 and are anchored into the roadbed 6, and the U-shaped nails 4 are arranged in a quincunx pattern on the plane.

[0038] Cement blanket 1, also known as concrete canvas, comprises a matrix formed by woven mesh bags and dry concrete with a special formula filled in the matrix. Preferably, cement blanket 1 comprises a fiber mesh and dry concrete. The fiber mesh can be woven from polyethylene and polypropylene filaments. The dry concrete can be formed by mixing cement, gypsum, quartz sand, fibers, and additives. Additives may include fly ash, blast furnace slag, and alkali activators. By adding fly ash, blast furnace slag, and alkali activators, cement blanket 1 can possess excellent mechanical properties, rapid hardening speed, significant early strength, and excellent high-temperature resistance, heat insulation, and acid and alkali corrosion resistance.

[0039] In terms of appearance, cement blanket 1 has a soft, cloth-like structure that can be bent and rolled up for easy transportation and storage. When cement blanket 1 comes into contact with water, the dry concrete inside undergoes a hydration reaction, which hardens the originally soft cement blanket 1 and gives it a certain load-bearing capacity, making it suitable for hardening foundation pits, slopes and roads.

[0040] When storing and transporting cement blanket 1, it can be rolled into a cylindrical shape to reduce storage volume and ease of transport. When installing cement blanket 1 on the roadbed 6, the edges of two adjacent cement blankets 1 are overlapped and connected, with the overlap width preferably greater than or equal to 10cm. In this embodiment, the area where two cement blankets 1 overlap is defined as the overlap area 2. The overlap area 2 includes two cement blankets 1 that overlap vertically. Anchor nails 3 can be used to fix the overlap area 2. The anchor nail 3 has a nail-like structure, including a nail body and a striking end set at one end of the nail body. The other end of the nail body has a nail tip. During installation, the nail tip can be aligned with the outermost cement blanket 1 of the overlap area 2, and the anchor nail 3 can be driven into the two cement blankets 1 and anchored into the roadbed 6 by striking. The anchor nail 3 is easy to install and can play a role in initial positioning.

[0041] It is understood that the overlap area 2 is strip-shaped, and the anchors 3 can be distributed at intervals along the length of the overlap area 2; in the preferred embodiment, the distance between two adjacent anchors 3 is less than or equal to 10cm, and the length of the anchor 3 is greater than or equal to 50cm.

[0042] This embodiment also defines a non-overlapping area, which refers to the area on the surface of the cement blanket 1 that is outside the overlapping area 2.

[0043] Use U-shaped nails to fix the non-overlapping areas, such as... Figure 2 As shown, the U-shaped nail 4 is U-shaped in overall shape, including two spaced-apart nailing parts 41 and a connecting part 42 connecting the two nailing parts 41. The nailing parts 41 can be driven into the cement blanket 1 and anchored into the roadbed 6 by striking. Since a single U-shaped nail 4 can provide two nailing parts 41 to fix the cement blanket 1, this can greatly increase the density of the nailing structure on the cement blanket 1, thereby reducing the number of workers installing the U-shaped nail 4 while meeting the connection strength requirements, which is conducive to improving efficiency. After the U-shaped nail 4 is driven in, the connecting part 42 is located above the cement blanket 1, and a ring-shaped hook can be formed between the connecting part 42 and the cement blanket 1, which makes it convenient for tools to be inserted to pull out the U-shaped nail 4, thereby facilitating the later removal of the cement blanket 1.

[0044] like Figure 1 As shown, on the plane, the U-shaped nails 4 are arranged in a plum blossom pattern. The plum blossom pattern refers to the arrangement in the shape of plum blossom petals, which includes several rows arranged at intervals. Each row includes several U-shaped nails 4 arranged at intervals, and the U-shaped nails 4 in adjacent rows are staggered. The plum blossom pattern can improve the uniformity of the connection between the cement blanket 1 and the roadbed 6 and reduce or avoid the occurrence of weak areas.

[0045] Preferably, the spacing between adjacent U-shaped nails 4 is 2 to 3 meters.

[0046] This embodiment provides a cement blanket pavement structure, using cement blanket 1 as the pavement structure on the roadbed 6. Before watering and hardening, cement blanket 1 is a flexible fabric structure, which can be easily transported and laid in designated locations. After watering and hardening, cement blanket 1 has high hardness and strength, enabling rapid road hardening. By overlapping two adjacent cement blankets 1 to form an overlap area 2, the overlap area 2 is fixed by anchor nails 3, and the non-overlap area is fixed by U-shaped nails 4, which can significantly improve the connection strength between cement blanket 1 and roadbed 6 and improve the anti-slip ability of cement blanket pavement. Anchor nails 3 are easy to install, and the approximate position of cement blanket 1 can be quickly fixed by anchor nails 3, which is convenient for the accurate installation of subsequent fixing structures. U-shaped nails 4 include two connected nailing parts 41, which can increase the density of the nailing structure and improve the fixing effect. The connecting part 42 of U-shaped nail 4 also makes it easy to pull out U-shaped nail 4, which is convenient for the later removal of cement blanket 1.

[0047] The cement blanket pavement structure described in this embodiment is suitable for complex geographical environments such as mountain trails, desert areas, and tidal flats, providing an innovative and efficient solution for rapid road paving. It can be used for road hardening in emergency situations such as natural disasters, such as earthquakes, rainstorms, and landslides.

[0048] Preferably, the overlapping area 2 has a recess 5, the depth of which corresponds to the thickness of the cement blanket 1; of the two cement blankets 1 that are overlapping: the edge of one cement blanket 1 is located in the recess 5, and the edge of the other cement blanket 1 covers the cement blanket 1 located in the recess 5.

[0049] like Figure 3 As shown, the pit 5 is a groove-shaped structure set on the roadbed 6. The pit 5 can be used to accommodate the edge of the cement blanket 1. The lower edge of the cement blanket 1 in the overlapping area 2 is placed in the pit 5, and the upper edge of the cement blanket 1 overlaps the cement blanket 1 in the pit 5. This can reduce the height of the uppermost surface of the cement blanket 1 in the overlapping area 2, so that the upper surfaces of the cement blanket 1 in the overlapping area 2 and the non-overlapping area are roughly at the same height, which is beneficial to improving the smoothness of the road surface after hardening.

[0050] After the cement blanket 1 has hardened after being watered, the sidewalls of the pit 5 can still apply a horizontal force to the cement blanket 1 to prevent it from moving along the width of the pit 5, thus improving the anti-skid performance of the cement blanket 1. When laying the road surface, if transportation conditions permit, try to select wide materials to reduce the treatment of joints; when laying, the overlap between two cement blankets 1 should be 10cm or more for end sealing.

[0051] Preferably, the thickness of the cement blanket 1 is greater than or equal to 10mm; based on a 10mm thick cement blanket 1, the water consumption per square meter is ≥9kg, and the water should be poured thoroughly, and it is important not to under-water.

[0052] More preferably, the depth of the pit 5 is equal to the thickness of a single cement blanket 1.

[0053] In one embodiment, sealant or ash is applied between the opposing surfaces of the two cement blankets 1 in the overlapping area 2.

[0054] In another embodiment, cement ash is sprinkled at the joints and seams of the two cement blankets 1.

[0055] Sealant refers to a sealing material that deforms according to the shape of the sealing surface, does not flow easily, and has a certain degree of adhesion; limestone ash is made by calcining limestone, and its main components are calcium oxide (CaO) and magnesium oxide (MgO). It has good adhesion and strength, and is also resistant to water and chemical corrosion; cement ash is a building material made by mixing cement, silica fume, and additives.

[0056] By using sealant, cement paste, or cement ash, the connection strength between adjacent cement blankets 1 can be improved. In conjunction with anchors 3, the strength and stability of the overlapping area 2 can be made no less than that of the material body, which is beneficial to improving the integrity of the hardened pavement.

[0057] Preferably, the length of the anchor 3 is greater than or equal to four times the thickness of the cement blanket 1; the anchor 3 is inserted through two layers of cement blanket 1. In order to make the anchor 3 firmly anchored into the roadbed 6, in this embodiment the length of the anchor 3 is greater than or equal to four times the thickness of the cement blanket 1.

[0058] Specifically, the length of anchor 3 is greater than or equal to 50cm, and the spacing between adjacent anchors 3 is less than or equal to 10cm.

[0059] In some embodiments, the cement blanket 1 is a needle-punched cement blanket or a three-dimensional spaced fabric cement blanket.

[0060] Needle-punched cement blankets are blanket-like materials made by wrapping cement powder with two layers of geotextile, punching holes, threading, and sealing them with a needle-punching machine.

[0061] Three-dimensional spacer fabric cement blankets are constructed using a three-dimensional spacer fabric framework. Cement powder is vibrated into the three-dimensional spacer fabric in stages until it is uniformly and densely filled. Surface dust is then removed and the blanket is sealed. Due to the three-dimensional fiber reinforcement, three-dimensional spacer fabric cement blankets possess high material strength and durability. Simultaneously, the three-dimensional fiber structure provides excellent drape and the ability to adapt to complex shapes, exhibiting good flexibility and toughness.

[0062] Example 2

[0063] This embodiment provides a temporary road, including a roadbed 6 and a cement blanket pavement structure as described in Embodiment 1, wherein the cement blanket 1 covers the roadbed 6 and is fixed to the roadbed 6.

[0064] The present invention provides a temporary road that, due to the use of the cement blanket pavement structure described above, can significantly improve the connection strength between the cement blanket 1 and the roadbed 6, improve the road's anti-slip ability, and thus increase the road's load-bearing capacity. It is suitable for complex geographical environments such as mountain trails, desert areas, and tidal flats, providing an innovative and efficient solution for the rapid paving of roads. It can also be used for road hardening in emergency situations such as natural disasters such as earthquakes, rainstorms, and landslides.

[0065] Before laying the cement blanket 1, water can be poured at the expected laying location to leave residual water on the surface. After the cement blanket 1 is laid, its bottom will come into contact with the residual water, which can improve the degree of hydration reaction at the bottom of the cement blanket 1. In addition, a small amount of dry concrete in the cement blanket 1 will seep down and mix with the soil of the subgrade 6, which can further enhance the connection strength between the cement blanket 1 and the subgrade 6.

[0066] After the cement blanket 1 is laid and fixed, water can be sprinkled on each cement blanket 1 in the order from the periphery to the center. The amount of water should be enough to fully saturate the cement blanket 1. Sprinkling water from the periphery to the center can utilize the volume increase of the concrete at the edge of the cement blanket 1 to generate a squeezing force towards the center. The mutual squeezing between the cement blankets 1 can improve the density of the concrete inside the cement blanket 1 and improve the flatness of the surface of the cement blanket 1.

[0067] The spraying flow rate should not be too high to avoid washing out the cementitious materials in the material. The spraying flow rate can be 4000 mL / min.

[0068] Preferably, the roadbed 6 is made of tidal flats, desert soil, or mud.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cement blanket pavement structure, characterized in that, It includes at least two cement blankets (1), with two adjacent cement blankets (1) overlapping to form an overlap area (2); An anchor (3) is provided on the overlapping area (2), and the anchor (3) passes through two cement blankets (1) and is anchored into the roadbed (6). U-shaped nails (4) are provided in the non-overlapping area outside the overlapping area (2). The U-shaped nails (4) pass through a cement blanket (1) and are anchored into the roadbed (6). On the plane, the U-shaped nails (4) are arranged in a quincunx pattern.

2. The cement blanket pavement structure according to claim 1, characterized in that, The overlapping area (2) is provided with a recess (5) below it, and the depth of the recess (5) corresponds to the thickness of a cement blanket (1). Of the two cement blankets (1) in the overlapping area (2): one cement blanket (1) is located inside the pit (5), and the other cement blanket (1) covers the opening of the pit (5).

3. The cement blanket pavement structure according to claim 2, characterized in that, The depth of the pit (5) is equal to the thickness of the cement blanket (1).

4. The cement blanket pavement structure according to claim 1, characterized in that: The surfaces of the two cement blankets (1) in the overlapping area (2) are coated with sealant or plain ash. Alternatively, cement ash may be sprinkled at the joints and seams of the two cement blankets (1).

5. The cement blanket pavement structure according to claim 1, characterized in that, The cement blanket (1) is a needle-punched cement blanket or a three-dimensional spaced fabric cement blanket.

6. The cement blanket pavement structure according to claim 1, characterized in that, The length of the anchor (3) is greater than or equal to four times the thickness of the cement blanket (1).

7. The cement blanket pavement structure according to claim 6, characterized in that, The length of the anchor (3) is greater than or equal to 50cm, and the spacing between the anchors (3) is less than or equal to 10cm; The spacing between adjacent U-shaped nails (4) is 2 to 3 meters; The thickness of the cement blanket (1) is greater than or equal to 10 cm; The width of the overlapping area (2) is greater than or equal to 10cm.

8. The cement blanket pavement structure according to claim 1, characterized in that, The cement blanket (1) comprises a fiber mesh and dry concrete.

9. The cement blanket pavement structure according to claim 1, characterized in that, The U-shaped nail (4) includes two spaced-apart nailing portions (41) and a connecting portion (42) connecting the two nailing portions (41). The two nailing parts (41) pass through the cement blanket (1) and are anchored into the roadbed (6), and the connecting part (42) is located above the cement blanket (1).

10. The cement blanket pavement structure according to claim 1, characterized in that, The roadbed (6) is tidal flats, desert soil or mud.

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