Pavement pit slot repairing structure

A technology of pits and cement emulsified asphalt, applied in the field of repairing structures, can solve the problems of low initial strength, temperature sensitivity, low bonding strength, etc., and achieve the effects of stable sealing, high elongation and low modulus

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

But because it is just another form of asphalt, it cannot get rid of a series of weaknesses of asphalt itself: easy aging, temperature sensitivity, low bond strength, poor flexibility, low initial strength, and the choice of emulsifier and construction equipment are expensive and other shortcomings

Method used

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  • Pavement pit slot repairing structure

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Experimental program
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Effect test

Embodiment 1

[0015] The pavement pothole repair structure of this embodiment includes a geogrid layer 1, a cement emulsified asphalt mortar layer 2 and a cement emulsified asphalt concrete layer 3 arranged sequentially from bottom to top in the pit to be repaired. Adhesive layer 4 is set between layer 1, cement emulsified asphalt mortar layer 2, cement emulsified asphalt concrete layer 3 and the inner surface of the pit to be repaired;

[0016] The adhesive raw material includes the following components by weight: 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 diester, 2 parts of poly-2,6-dimethyl-1,4-phenylene ether, 5 parts of polyvinyl acetate, 5 parts of dimethylethanolamine, α, ω-dihydroxy polydimethyl 5 parts of base siloxane, 1 part of nano-silica, 1 part of graphite powder, 3 parts of tackifier, 1 part of chain extender, 1 part of crosslinking agent, and parts of ...

Embodiment 2

[0018] The pavement pothole repair structure of this embodiment includes a geogrid layer 1, a cement emulsified asphalt mortar layer 2 and a cement emulsified asphalt concrete layer 3 arranged sequentially from bottom to top in the pit to be repaired. Adhesive layer 4 is set between layer 1, cement emulsified asphalt mortar layer 2, cement emulsified asphalt concrete layer 3 and the inner surface of the pit to be repaired;

[0019] The adhesive raw material includes the following components by weight: 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, methacrylic acid dicondensate 20 parts of triethylene glycol diester, 6 parts of poly-2,6-dimethyl-1,4-phenylene ether, 10 parts of polyvinyl acetate, 10 parts of dimethylethanolamine, α, ω-dihydroxy polydimethyl 10 parts of base siloxane, 5 parts of nano-silica, 5 parts of graphite powder, 15 parts of tackifier, 3 parts of chain extender, 3 p...

Embodiment 3

[0021] The pavement pothole repair structure of the present embodiment, the road surface pothole repair structure of the present embodiment, comprises the geogrid layer 1, the cement emulsified asphalt mortar layer 2 and the cement emulsified asphalt mortar layer 2 which are sequentially arranged in the pothole to be repaired. An asphalt concrete layer 3, an adhesive layer 4 is arranged between the geogrid layer 1, the cement emulsified asphalt mortar layer 2, the cement emulsified asphalt concrete layer 3 and the inner surface of the pit to be repaired;

[0022] The adhesive raw material includes the following components by weight: 30 parts of epoxy resin, 25 parts of ethylene glycol butyl ether, 55 parts of n-butanol, 10 parts of methacrylic acid, 1 part of styrene, 20 parts of triethylene glycol diester, 2 parts of poly 2,6-dimethyl-1,4-phenylene ether, 10 parts of polyvinyl acetate, 5 parts of dimethylethanolamine, α, ω-dihydroxy polydimethyl 10 parts of base siloxane, 1 p...

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Abstract

The invention discloses a pavement pit slot repairing structure. The pavement pit slot repairing structure comprises a geogrid layer, a cement-emulsified asphalt mortar layer and a cement-emulsified asphalt concrete layer which are sequentially arranged in a to-be-repaired pit slot from bottom to top, wherein an adhesive layer is arranged between the inner surface of the to-be-repaired pit slot and each of the geogrid layer, the cement-emulsified asphalt mortar layer and the cement-emulsified asphalt concrete layer; an adhesive comprises raw materials as follows: 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, a tackifier, a chain extender, a cross-linking agent and a plasticizer. The geogrid layer, the cement-emulsified asphalt mortar layer and the cement-emulsified asphalt concrete layer are tightly bonded with the original pavement to form an overall stressed structure by the special adhesive, and after one-year usage of the repairing structure, joints are free of cracks, no falling phenomenon is produced, and the stable sealing effect is realized.

Description

technical field [0001] The invention relates to a repairing structure, in particular to a pavement pothole repairing structure. Background technique [0002] Among the various damage forms of asphalt pavement, the two types of damage, cracks and potholes, account for the largest proportion and are the most common. Crack damage belongs to the structural damage of asphalt pavement, and more affects the durability of asphalt pavement. Pothole damage belongs to the functional damage of asphalt pavement, and more affects the performance of asphalt pavement. Crack filling and pit repair are two of the most common and difficult daily maintenance tasks in the maintenance department. The two most common daily maintenance tasks, crack filling and pit repair, have received extensive attention from relevant departments both at home and abroad. The crack filling treatment is mainly aimed at longitudinal cracks, transverse cracks, massive cracks and reflective cracks. The commonly use...

Claims

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Application Information

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IPC IPC(8): E01C7/32C09J4/06C09J4/02C09J11/04C09J11/06C09J11/08B32B11/04
CPCE01C7/32B32B11/04B32B2419/00C09J4/06C09J11/04C09J11/06C09J11/08E01C7/325
Inventor 王羽刘丽咸淼
Owner CHONGQING JIAOTONG UNIVERSITY
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