Pavement crack filling and repairing structure and pavement crack filling and repairing method

Abstract

This application relates to a pavement crack filling and repair structure and method, belonging to the field of pavement repair and maintenance technology. The pavement crack filling and repair structure includes, from top to bottom, a grouting layer, a crushed stone layer, a room-temperature rapid-curing primer layer, and a mixture layer. This pavement crack filling and repair structure can be constructed at room temperature and can form strong interfacial adhesion and load-bearing strength with the pavement, thereby ensuring pavement performance.

Description

Technical Field

[0001] This application relates to the field of road repair and maintenance technology, and more specifically, to a road crack filling and repair structure and a road crack filling and repair method. Background Technology

[0002] Over long-term use, road surfaces develop varying degrees of damage due to the continuous effects of the external environment, with road cracks being one of the most significant. Various forms of road cracks not only affect the aesthetics of the road surface but also drastically shorten its service life. Furthermore, under the continuous influence of the external environment and traffic loads, the cracks can expand, impacting driving safety.

[0003] There are various methods for repairing road cracks, generally including three types: hot patching, spraying, and hot recycling. However, most of them require high-temperature construction, and some may need to be rebuilt in a short period of time due to insufficient durability. Summary of the Invention

[0004] The purpose of this application is to provide a road surface crack filling and repair structure that can be constructed at room temperature and can form a strong interfacial bond and load-bearing strength with the road surface, thereby ensuring the performance of the road surface.

[0005] This application is achieved through the following technical solution:

[0006] This application provides a road surface crack filling and repair structure, which includes, from top to bottom, an injection adhesive layer, a crushed stone layer, a room temperature rapid curing primer layer, and a mixture layer.

[0007] The road crack filling and repair structure, in the order of filling, includes a mixture layer, a room-temperature rapid-curing primer layer, a crushed stone layer, and an injection adhesive layer. The mixture layer serves to fill the crack. The room-temperature rapid-curing primer layer quickly treats the mixture layer or the bottom of the crack, preventing the injection adhesive from seeping in, prolonging the construction process, and resulting in the large amount of injection adhesive used. The crushed stone layer has good compressive and tensile strength. The injection adhesive layer has good tensile strength, and as the surface layer of the repair structure, it can bond well with the original road surface, adapt well to crack changes, prevent water seepage, and bear part of the load stress.

[0008] In one embodiment of this application, the crushed stone layer is a crushed stone mixture with the same particle size, the maximum particle size of the crushed stone mixture is 1 / 2 to 1 / 3 of the crack width, and the minimum particle size of the crushed stone mixture is 2.36 mm.

[0009] In the above embodiments, the particle size of the crushed stone is determined according to the specific width of the crack, so as to facilitate effective support with the injection adhesive layer, so that the repair structure has good compressive and tensile strength.

[0010] In one embodiment of this application, the mixing layer is aggregate with a particle size of 0-3 mm.

[0011] In the above embodiments, aggregates with a particle size of 0-3mm can be understood as sand, which has good fluidity and can effectively seal cracks.

[0012] In one embodiment of this application, the potting adhesive layer comprises the following components in the indicated weight ratios: 100 parts epoxy resin, 30 parts polyurethane prepolymer, 20-30 parts diluent, 50 parts curing agent, 1.5 parts accelerator, and 1.5 parts initiator.

[0013] In the above embodiments, the injection adhesive layer composed of the above components has good tensile properties and can bond well with the original road surface.

[0014] In one embodiment of this application, the room temperature fast-curing primer layer comprises the following components in the indicated weight ratios: 100 parts epoxy resin, 20 parts diluent, 50-60 parts curing agent, and 10 parts accelerator.

[0015] In the above embodiments, the room-temperature fast-curing primer layer composed of the above components can achieve rapid solidification, so as to quickly process the mixture layer.

[0016] In one embodiment of this application, the road crack filling and repair structure is applied to cracks with a depth greater than 150mm. The upper surface of the mixture layer is 150mm away from the road surface, the thickness of the room temperature fast curing primer layer is 1-3mm, the upper surface of the crushed stone layer is 5-10mm away from the road surface, and the surface of the injection adhesive layer is flush with the road surface.

[0017] In the above embodiment, the road crack filling and repair structure is applied to cracks with a depth greater than 150mm. The mixture layer is filled to a depth of 150mm from the road surface to fill the gaps with a depth greater than 150mm. The thickness of the room temperature fast-curing primer layer is 1-3mm to form a cured waterproof layer with the mixture layer, achieving rapid sealing. The crushed stone layer is located above the room temperature fast-curing primer layer and can bond with the injection adhesive layer to bear part of the load. The injection adhesive layer is injected on top of the crushed stone layer and penetrates into the crushed stone layer to solidify with the crushed stone, which has good waterproof ability and bears part of the load stress.

[0018] In one embodiment of this application, the road crack filling and repair structure further includes a wear-resistant layer, which is spread on the surface of the injection adhesive layer. The wear-resistant layer includes corundum or manufactured sand, and the thickness of the wear-resistant layer is 0.5-2mm.

[0019] In the above embodiments, the wear-resistant layer is disposed on the surface of the injection adhesive layer, and has the characteristics of anti-skid and wear-resistant properties, thereby improving the service life of the road surface.

[0020] This application also provides a road surface crack filling and repair structure, including an injection adhesive layer, a crushed stone layer and a room temperature rapid curing primer layer distributed from top to bottom.

[0021] The road crack filling and repair structure includes, in order of filling, a room-temperature fast-curing primer layer, a crushed stone layer, and an injection adhesive layer. The room-temperature fast-curing primer layer has a rapid curing and waterproofing effect. The crushed stone layer supports the cracks. The injection adhesive layer seeps into the crushed stone layer under gravity and bonds with the crushed stone to form the main load-bearing part.

[0022] In one embodiment of this application, the road crack filling and repair structure is applied to cracks with a depth of less than or equal to 150 mm, the thickness of the base adhesive layer that cures rapidly at room temperature is 1-3 mm, and the depth of the upper surface of the crushed stone layer from the road surface is 5-10 mm.

[0023] In the above embodiments, the road crack filling and repair structure is applied to cracks with a depth of less than or equal to 150 mm. The room temperature fast curing base layer can form a bottom curing waterproof layer. The crushed stone layer is filled to a depth of 5-10 mm from the road surface and can bear the main load. The injection adhesive layer is injected on top of the crushed stone layer and penetrates into the crushed stone layer to solidify with the crushed stone, which has good waterproof ability and bears part of the load stress.

[0024] This application also provides a method for filling and repairing road surface cracks, which includes:

[0025] When the depth of the crack is greater than 150mm, first fill the crack with aggregate with a particle size of 0-3mm until the upper surface of the aggregate is 150mm away from the road surface. Then fill with a 1-3mm thick layer of room temperature fast-curing primer. Next, fill with crushed stone mixture until the upper surface of the crushed stone mixture is 5-10mm away from the road surface. Finally, fill the crushed stone mixture with injection adhesive until it is flush with the road surface.

[0026] When the depth of the crack is less than or equal to 150mm, first fill it with a 1-3mm thick, room-temperature fast-curing primer, then fill it with crushed stone mixture until the upper surface of the crushed stone mixture is 5-10mm away from the road surface, and then fill the crushed stone mixture with injection adhesive until it is flush with the road surface.

[0027] This method of filling and repairing road cracks involves selecting different filling materials and methods based on the depth of the cracks. By paving in layers, an integral structure is formed and bonded to the original road surface, extending the service life of the road surface and enabling it to withstand the load.

[0028] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of a road crack filling and repair structure provided in the first aspect of this application;

[0031] Figure 2 A schematic diagram of a road surface crack filling and repair structure provided in the second aspect of this application.

[0032] Icons: 100 - Road crack filling and repair structure; 11 - Injection adhesive layer; 12 - Crushed stone layer; 13 - Room temperature fast curing primer layer; 14 - Mixed layer; 200 - Road crack filling and repair structure; 21 - Injection adhesive layer; 22 - Crushed stone layer; 23 - Room temperature fast curing primer layer. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] The following description, with reference to the figures, describes a road surface crack filling and repair structure 100 according to an embodiment of the first aspect of this application.

[0039] like Figure 1 As shown, the road crack filling and repair structure 100 according to an embodiment of this application includes, from top to bottom, an injection adhesive layer 11, a crushed stone layer 12, a room temperature rapid curing base adhesive layer 13, and a mixture layer 14.

[0040] The mixture layer 14 serves to fill cracks; the room-temperature fast-curing primer layer 13 quickly treats the mixture layer 14 or the bottom of cracks, preventing the injection adhesive from seeping down, prolonging the construction process, and resulting in the large-scale use of injection adhesive; the crushed stone layer 12 has good compressive and tensile strength; the injection adhesive layer 11 has good tensile strength, and as a surface layer for repairing the structure, it can bond well with the original pavement, adapt well to crack changes, prevent water seepage, and bear part of the load stress. Based on the functions of each layer, the filling order of the injection adhesive layer 11, crushed stone layer 12, room-temperature fast-curing primer layer, and mixture layer 14 cannot be reversed.

[0041] The injection adhesive layer 11 is formed by injection adhesive, and the room temperature rapid curing primer layer 13 is formed by room temperature rapid curing primer. The components of the injection adhesive and the room temperature rapid curing primer are similar, but the mixing ratio of the components is different, resulting in differences in their performance. The room temperature rapid curing primer layer 13 can penetrate into the mixture layer 14 and the original pavement within ten minutes and quickly cure to form an integral structure, acting as a primer to prevent moisture penetration. The injection adhesive layer 11 can penetrate into the crushed stone layer 12 (and fill the voids in the crushed stone layer 12) and cure within one hour, forming an interface bond with the original pavement. Unlike the room temperature rapid curing primer layer 13, the injection adhesive layer 11 has a certain degree of toughness and high durability, which can disperse some of the load stress and resist the erosion of the external environment, ensuring normal use after the pavement cracks are repaired.

[0042] In one embodiment of this application, the potting adhesive layer 11 comprises the following components in the indicated weight ratios: 100 parts epoxy resin, 30 parts polyurethane prepolymer, 20-30 parts diluent, 50 parts curing agent, 1.5 parts accelerator, and 1.5 parts initiator.

[0043] In one embodiment of this application, the room temperature fast-curing primer layer 13 comprises the following components in the following weight ratio: 100 parts epoxy resin, 20 parts diluent, 50-60 parts curing agent, and 10 parts accelerator.

[0044] It should be noted that the epoxy resin can be bisphenol A type epoxy resin, bisphenol S type epoxy resin, or bisphenol F type epoxy resin. The polyurethane prepolymer can be an isocyanate-terminated polyurethane prepolymer or a hydroxyl-terminated polyurethane prepolymer. The curing agent can be polyamide 651, polyetheramine 400, or T31. The accelerator can be 2,4,6-triphenol, o-hydroxybenzyldimethylamine, or triethylamine.

[0045] In one embodiment of this application, the crushed stone layer 12 is a crushed stone mixture with the same particle size. The maximum particle size of the crushed stone mixture is 1 / 2 to 1 / 3 of the crack width, and the minimum particle size of the crushed stone mixture is 2.36 mm. The particle size of the crushed stone is determined according to the specific width of the crack. Under the self-flowing action of the injection adhesive, the injection adhesive and the crushed stone layer 12 are bonded together to form an integral structure, forming effective support, so that the repair structure (short for pavement crack filling and repair structure 100) has good compressive and tensile strength.

[0046] In one embodiment of this application, the mixing layer 14 is an aggregate with a particle size of 0-3 mm. This aggregate can be understood as sand, which has good fluidity and can effectively seal the cracks when the mixing layer 14 fills them.

[0047] The road surface crack filling and repair structure 100 is applied to cracks with a depth greater than 150mm. The upper surface of the mixture layer 14 is 150mm away from the road surface. The thickness of the room temperature fast curing primer layer 13 is 1-3mm. The upper surface of the crushed stone layer 12 is 5-10mm away from the road surface. The surface of the injection adhesive layer 11 is flush with the road surface.

[0048] In one embodiment of this application, the pavement crack filling and repair structure 100 further includes a wear-resistant layer, which is spread on the surface of the injection adhesive layer 11. The wear-resistant layer includes corundum or manufactured sand, and the thickness of the wear-resistant layer is 0.5-2 mm. The wear-resistant layer has anti-skid and wear-resistant properties.

[0049] It should be noted that the room temperature mentioned in this application refers to 10-60℃.

[0050] The beneficial effects of the pavement crack filling and repair structure 100 according to the embodiments of this application are as follows:

[0051] This pavement crack filling and repair structure 100 can repair and fill cracks that are long and wide according to the actual needs of the pavement. Due to the characteristics of the injection adhesive and the fast-curing primer, it can isolate moisture and effectively bond with the original pavement. The multi-layer filling can effectively disperse the load stress. It also has the advantages of being able to be constructed at room temperature and having a short time to close traffic, ensuring that the repair achieves the best results.

[0052] According to a second aspect of this application, a road surface crack filling and repair structure 200 is provided. The difference between this embodiment and the first aspect embodiment is that the road surface crack filling and repair structure 200 of the second aspect embodiment is applied to cracks with a depth of less than or equal to 150 mm. Figure 2 As shown, the road crack filling and repair structure 200 includes an injection adhesive layer 21, a crushed stone layer 22, and a room temperature rapid curing base adhesive layer 23 distributed from top to bottom. Compared with the road crack filling and repair structure 100 of the first aspect embodiment, the road crack filling and repair structure 200 lacks the mixing layer 14, and the bottom of the crack is directly treated with the room temperature rapid curing base adhesive layer 23.

[0053] The specific implementation method is as follows: the thickness of the base adhesive layer 23 that cures rapidly at room temperature is 1-3mm, the depth of the upper surface of the crushed stone layer 22 from the road surface is 5-10mm, and the rest is the injection adhesive layer 21.

[0054] According to a third aspect of this application, a method for filling and repairing road cracks is provided, the method comprising:

[0055] When the depth of the crack is greater than 150mm, first fill the crack with aggregate with a particle size of 0-3mm until the upper surface of the aggregate is 150mm away from the road surface. Then fill with a 1-3mm thick layer of room temperature fast-curing primer. Next, fill with crushed stone mixture until the upper surface of the crushed stone mixture is 5-10mm away from the road surface. Finally, fill the crushed stone mixture with injection adhesive until it is flush with the road surface.

[0056] When the depth of the crack is less than or equal to 150mm, first fill it with a 1-3mm thick, room-temperature fast-curing primer, then fill it with crushed stone mixture until the upper surface of the crushed stone mixture is 5-10mm away from the road surface, and then fill the crushed stone mixture with injection adhesive until it is flush with the road surface.

[0057] This method of filling and repairing road cracks involves selecting different filling materials and methods based on the depth of the cracks. By paving in layers, an integral structure is formed and bonded to the original road surface, extending the service life of the road surface and enabling it to withstand the load.

[0058] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0059] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A road surface crack filling and repair structure, characterized in that, It includes, from top to bottom, a potting adhesive layer, a crushed stone layer, a room-temperature fast-curing base adhesive layer, and a mixing layer; The crushed stone layer is a mixture of crushed stone with the same particle size. The maximum particle size of the crushed stone mixture is 1 / 2 to 1 / 3 of the crack width, and the minimum particle size of the crushed stone mixture is 2.36 mm. The road surface crack filling and repair structure is applied to cracks with a depth greater than 150mm. The upper surface of the mixed layer is 150mm away from the road surface. The thickness of the room temperature fast curing primer layer is 1-3mm. The upper surface of the crushed stone layer is 5-10mm away from the road surface. The surface of the injection adhesive layer is flush with the road surface. The mixing layer is aggregate with a particle size of 0-3mm; The potting adhesive layer comprises the following components in the indicated weight ratios: 100 parts epoxy resin, 30 parts polyurethane prepolymer, 20-30 parts diluent, 50 parts curing agent, 1.5 parts accelerator, and 1.5 parts initiator. The room temperature fast-curing primer layer comprises the following components in the indicated weight ratios: 100 parts epoxy resin, 20 parts diluent, 50-60 parts curing agent, and 10 parts accelerator. The epoxy resin is bisphenol A type epoxy resin, bisphenol S type epoxy resin, or bisphenol F type epoxy resin; the polyurethane prepolymer is an isocyanate-terminated polyurethane prepolymer or a hydroxyl-terminated polyurethane prepolymer; the curing agent is polyamide 651, polyetheramine 400, or T31; the accelerator is 2,4,6-triphenol, o-hydroxybenzyl dimethylamine, or triethylamine.

2. The road surface crack filling and repair structure according to claim 1, characterized in that, The road surface crack filling and repair structure also includes a wear-resistant layer, which is spread on the surface of the injection adhesive layer. The wear-resistant layer includes corundum or manufactured sand, and the thickness of the wear-resistant layer is 0.5-2mm.

3. A road surface crack filling and repair structure, characterized in that, It includes, from top to bottom, an injection adhesive layer, a crushed stone layer, and a room-temperature fast-curing base adhesive layer; the crushed stone layer is a mixture of crushed stone with the same particle size, the maximum particle size of the crushed stone mixture is 1 / 2 to 1 / 3 of the crack width, and the minimum particle size of the crushed stone mixture is 2.36 mm; The road surface crack filling and repair structure is applied to cracks with a depth of less than or equal to 150 mm. The thickness of the room temperature fast curing primer layer is 1-3 mm, and the depth of the upper surface of the crushed stone layer from the road surface is 5-10 mm. The potting adhesive layer comprises the following components in the indicated weight ratios: 100 parts epoxy resin, 30 parts polyurethane prepolymer, 20-30 parts diluent, 50 parts curing agent, 1.5 parts accelerator, and 1.5 parts initiator. The room temperature fast-curing primer layer comprises the following components in the indicated weight ratios: 100 parts epoxy resin, 20 parts diluent, 50-60 parts curing agent, and 10 parts accelerator. The epoxy resin is bisphenol A type epoxy resin, bisphenol S type epoxy resin, or bisphenol F type epoxy resin; the polyurethane prepolymer is an isocyanate-terminated polyurethane prepolymer or a hydroxyl-terminated polyurethane prepolymer; the curing agent is polyamide 651, polyetheramine 400, or T31; the accelerator is 2,4,6-triphenol, o-hydroxybenzyl dimethylamine, or triethylamine.

4. A method for filling and repairing road cracks using a road crack filling and repair structure as described in claim 1 or 3, characterized in that, The method for filling and repairing road surface cracks includes: When the depth of the crack is greater than 150mm, first fill the crack with aggregate with a particle size of 0-3mm until the upper surface of the aggregate is 150mm away from the road surface. Then fill with a 1-3mm thick layer of room temperature fast-curing primer. Next, fill with crushed stone mixture until the upper surface of the crushed stone mixture is 5-10mm away from the road surface. Finally, fill the crushed stone mixture with injection adhesive until it is flush with the road surface. When the depth of the crack is less than or equal to 150mm, first fill it with a 1-3mm thick, room-temperature fast-curing primer, then fill it with crushed stone mixture until the upper surface of the crushed stone mixture is 5-10mm away from the road surface, and then fill the crushed stone mixture with injection adhesive until it is flush with the road surface.

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