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Anti-cracking type thin overlay

A thin-layer overlay and pavement technology, which is applied to cohesive pavement, roads, roads and other directions paved on site, can solve the problems of not fully utilizing the pavement structure and polluting the environment by waste materials, and achieve improved interlayer bonding performance and pavement usability, enhanced wear resistance, improved self-reinforcement and crack resistance

Inactive Publication Date: 2017-09-29
江苏众科新材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, in the stage of road surface maintenance or reconstruction, the traditional method is usually to dig out the original basic brine surface structure, and then lay a new pavement structure, but this method not only cannot make full use of the original road surface structure, but also cause waste to pollute the environment

Method used

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  • Anti-cracking type thin overlay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Finished product 1: The waterproof layer is made of waterproof paint, and the spraying amount is 1.6kg / m 2 , the adhesive layer is composite silica gel, including 30% polyvinyl alcohol, 45% water-soluble nano-scale silica sol, 15% kaolin, 0.2% silane coupling agent, 9.8% glass fiber, 0.001% organic acid retarder, its thickness is 5mm; the steel fiber reinforced layer includes cationic emulsified asphalt and steel fiber (mass ratio is 11:3), the length of the steel fiber is 3mm, its thickness is 20mm; the silica gel compacting agent The layer is made of silica gel compactor with a coating weight of 0.2kg / m 2 , the wear-resistant layer of ceramic particles, wherein ceramic particles of 8-5mm account for 25%, ceramic particles of 5-3mm account for 15%, ceramic particles of 3-1mm account for 5% and cement mortar accounts for 55%, and the laying thickness 15mm.

Embodiment 2

[0030] Finished product 2: The waterproof layer is made of waterproof paint, and the spraying amount is 1.8kg / m 2 ; The adhesive layer is composite silica gel, including 30% polyvinyl alcohol, 45% water-soluble nano-scale silica sol, 15% kaolin, 0.2% silane coupling agent, 9.8% glass fiber, 0.001% organic acid retarder, its thickness is 8mm; the steel fiber reinforced layer includes cationic emulsified asphalt and steel fiber (mass ratio is 4:1), the length of the steel fiber is 6mm, and its thickness is 25mm; the silica gel compacting agent The layer is made of silica gel compactor with a coating weight of 0.4kg / m 2 , the wear-resistant layer of ceramic particles, wherein 8 ~ 5mm of ceramic particles accounted for 30%, 5 ~ 3mm of ceramic particles accounted for 30%, 3 ~ 1mm of ceramic particles accounted for 5% and cement mortar accounted for 35%, the laying thickness is 20mm.

Embodiment 3

[0032] Finished product 3: The waterproof layer is made of waterproof paint, and the spraying amount is 2.2kg / m 2 ; The adhesive layer is composite silica gel, including 30% polyvinyl alcohol, 45% water-soluble nano-scale silica sol, 15% kaolin, 0.2% silane coupling agent, 9.8% glass fiber, 0.001% organic acid retarder, its thickness is 10mm; the steel fiber reinforced layer includes cationic emulsified asphalt and steel fiber (mass ratio is 4:1), the length of the steel fiber is 11mm, and its thickness is 30mm; the silica gel compacting agent The layer is made of silica gel compactor with a coating weight of 0.6kg / m 2 , the wear-resistant layer of ceramic particles, wherein 8 ~ 5mm of ceramic particles accounted for 45%, 5 ~ 3mm of ceramic particles accounted for 15%, 3 ~ 1mm of ceramic particles accounted for 5% and cement mortar accounted for 35%, the laying thickness is 25mm.

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Abstract

The invention discloses an anti-cracking type thin overlay. The anti-cracking type thin overlay is of a laminated composite structure; a waterproof layer, a binding agent layer, a steel fiber enhanced layer, a silica gel compacting agent layer and a ceramic particle wear-resistant layer are sequentially paved on an original pavement from bottom to top. By adopting graded ceramic particles, the wearability of the overlay is improved; by using the silica gel compacting agent layer, the cohesive property between the steel fiber enhanced layer and the ceramic particle wear-resistant layer is improved, and the abrasiveness of the overlay is enhanced at the same time; by adopting the steel fiber enhanced layer, the self-enhancement property and the anti-cracking property of materials are improved; because composite adhesive is used as a surface binding agent between the waterproof layer and the steel fiber enhanced layer, larger rigidity of epoxy resin is developed; due to the property of better flexibility of polyvinyl alcohol, a high polymer network structure with stronger toughness and stronger solidness and softness is formed between layers, so that the interlayer binding performance and road application performance of the overlay are effectively improved, and lasting conservation to pavements is ensured.

Description

technical field [0001] The invention relates to a crack-resistant thin-layer overlay, which belongs to the technical field of road maintenance. Background technique [0002] With the increase of the age of asphalt pavement in our country, the increase of traffic volume, and under the action of complex climate factors, the asphalt pavement is prone to early disease phenomena such as cracks, ruts, potholes, and anti-skid performance attenuation. These diseases seriously affect the The service level of asphalt pavement has become an important subject that needs to be solved urgently in the field of highway engineering research. In the existing technology, in the stage of road surface maintenance or reconstruction, the traditional method is usually to dig out the original basic brine surface structure, and then lay a new pavement structure, but this method not only cannot make full use of the original road surface structure, but also cause waste to pollute the environment. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32
CPCE01C7/325
Inventor 于迪尔曹健凌晨陈刚朱振宇刘昌财张伟季路
Owner 江苏众科新材料科技发展有限公司