Structure for repairing pit slot of asphalt pavement by precast blocks

A technology of asphalt pavement and prefabricated blocks, which is applied in the field of repairing structures, can solve problems such as rutting, wrapping, potholes, and aggravate asphalt pavement, pothole diseases, etc., and achieve the effects of weakening the impact, increasing the filling rate, and improving stability

Inactive Publication Date: 2019-03-01
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, there are also shortcomings in asphalt pavement. Under the coupling effect of external environmental conditions such as high temperature, rainy seasons and driving loads, asphalt pavement is prone to rutting, wrapping, potholes and other diseases, of which potholes account for It has a large proportion and has a serious impact on the smoothness of the road surface, driving comfort, and safety. Especially in my country, the characteristics of overloading and large-flow traffic are becoming more and more obvious, which intensifies the probability of pits on asphalt pavement

Method used

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  • Structure for repairing pit slot of asphalt pavement by precast blocks

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The asphalt pavement prefabricated block repair pit structure of the present embodiment includes a first interface adhesive layer 6, a first geotextile grid layer 1, a cement emulsified asphalt mortar layer 2, The second geotextile grid layer 3, the second adhesive layer 4 and the prefabricated block layer 5; the interface adhesive layer 4 raw materials include the following components by weight: 100 parts of modified asphalt, 30 parts of epoxy resin , 15 parts of ethylene glycol butyl ether, 5 parts of n-butanol, 5 parts of methacrylic acid, 1 part of styrene, 10 parts of triethylene glycol dimethacrylate, poly-2,6-dimethyl-1 , 2 parts of 4-phenylene ether, 5 parts of polyvinyl acetate, 5 parts of dimethylethanolamine, 5 parts of α, ω-dihydroxypolydimethylsiloxane, 1 part of nano-silica, 1 part of graphite powder, 30 parts of polypropylene fiber, 10 parts of fly ash, 3 parts of tackifier, 1 part of chain extender, 1 part of crosslinking agent, and 1 part of plasticizer...

Embodiment 2

[0019] The asphalt pavement prefabricated block repairing pit structure of this embodiment includes a first interface adhesive layer 64, a first geotextile grid layer 1, a cement emulsified asphalt mortar layer 2, The second geotextile grid layer 3, the second adhesive layer 4 and the prefabricated block layer 5; the interface adhesive layer 4 raw materials include the following components by weight: 150 parts of modified asphalt, 40 parts of epoxy resin , 25 parts of ethylene glycol butyl ether, 15 parts of n-butanol, 10 parts of methacrylic acid, 5 parts of styrene, 20 parts of triethylene glycol diester of methacrylate, poly 2,6-dimethyl-1 , 6 parts of 4-phenylene ether, 10 parts of polyvinyl acetate, 10 parts of dimethylethanolamine, 10 parts of α, ω-dihydroxy polydimethylsiloxane, 5 parts of nano-silica, 5 parts of graphite powder, 15 parts of tackifier, 3 parts of chain extender, 3 parts of crosslinking agent, 3 parts of plasticizer;

[0020] The modified asphalt is pol...

Embodiment 3

[0023] The asphalt pavement prefabricated block repairing pit structure of this embodiment includes a first interface adhesive layer 64, a first geotextile grid layer 1, a cement emulsified asphalt mortar layer 2, The second geotextile grid layer 3, the second adhesive layer 4 and the prefabricated block layer 5; the interface adhesive layer 4 raw materials include the following components by weight: 100 parts of modified asphalt, 40 parts of epoxy resin , 15 parts of ethylene glycol butyl ether, 15 parts of n-butanol, 5 parts of methacrylic acid, 5 parts of styrene, 10 parts of triethylene glycol diester of methacrylate, poly 2,6-dimethyl-1 , 6 parts of 4-phenylene ether, 5 parts of polyvinyl acetate, 10 parts of dimethylethanolamine, 5 parts of α, ω-dihydroxypolydimethylsiloxane, 5 parts of nano-silica, 1 part of graphite powder, 40 parts of polypropylene fiber, 10 parts of fly ash, 15 parts of tackifier, 1 part of chain extender, 3 parts of crosslinking agent, and 1 part of...

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Abstract

The invention discloses a structure for repairing a pit slot of an asphalt pavement by precast blocks. The structure comprises a first interface adhesive layer, a first geotextile grating layer, a cement-emulsified asphalt mortar layer 2, a second geotextile grating layer, a second adhesive layer and a precast block layer which are arranged at the bottom of the pit slot from bottom to top in sequence; the interface adhesive layer comprises raw materials as follows: modified asphalt, epoxy resin, butyl cellosolve, n-butyl alcohol, methylacrylic acid, styrene, triethylene glycol dimethacrylate,poly2,6-dimethyl-1,4-phenyl ether, polyvinyl acetate, dimethylethanolamine, alpha,omega-dihydroxyl polydimethylsiloxane, nano-silica, graphite powder, polypropylene fiber, fly ash, a tackifier, a chain extender, a cross-linking agent and a plasticizer. By means of the synergistic effect of an interface adhesive, geogrids and cement-emulsified asphalt mortar, the pavement precast blocks and the original pavement are tightly bonded to form an overall stressed structure.

Description

technical field [0001] The invention relates to a repairing structure, in particular to a repairing pothole structure of asphalt pavement prefabricated blocks. Background technique [0002] With the rapid development of my country's highway transportation industry, asphalt pavement has been widely used because of its comfortable driving, good flatness, short construction period and easy maintenance and maintenance. Asphalt pavement accounts for more than 90%. At the same time, there are also shortcomings in asphalt pavement. Under the coupling effect of external environmental conditions such as high temperature, rainy seasons and driving loads, asphalt pavement is prone to rutting, wrapping, potholes and other diseases, of which potholes account for The specific gravity is large and has a serious impact on the smoothness of the road surface, driving comfort, and safety. Especially in my country, the characteristics of overloading and large-flow traffic are becoming more and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32C09J4/06C09J4/02C09J11/04C09J11/06C09J11/08C09J7/29C09J7/30
CPCE01C7/32C09J4/06C09J7/29C09J7/30C09J11/04C09J11/06C09J11/08C09J2400/263C09J2495/006E01C7/325
Inventor 王羽咸淼刘丽
Owner CHONGQING JIAOTONG UNIVERSITY
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