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Double reflection crack prevention structure for preventing reflection cracks of composite pavement and implementation method thereof

A technology of compound pavement and reflective cracks, which is applied to roads, roads, on-site coagulation pavements, etc. It can solve the problems of reducing bearing capacity and anti-deformation capacity, weakening the structural integrity of the surface layer, and not setting drainage facilities, etc. , to achieve the effects of resolving stress concentration, solving the problem of reflective cracks, and good adaptability to deformation

Inactive Publication Date: 2014-08-06
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The influence of surface layer cracking on the pavement structure is multifaceted. First, cracking will weaken the integrity of the surface layer structure and reduce its bearing capacity and deformation resistance. More, water seeps down along the joints, and there is no good drainage facility inside the structural layer. The water stays inside the pavement structure for a long time. Under the action of traffic load, it forms hydrodynamic pressure and repeatedly washes the joint surface, eventually causing the asphalt surface layer to be damaged. Peeling, loosening, pitting, and subsequent structural damage

Method used

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  • Double reflection crack prevention structure for preventing reflection cracks of composite pavement and implementation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] like figure 1 As shown, the double anti-reflection structure for the prevention and treatment of composite pavement reflective cracks includes, from top to bottom, asphalt upper layer 6, upper anti-reflection layer 5, asphalt lower layer 4, lower anti-reflection layer 3, cement concrete panel 2 and subgrade 1, The upper anti-reflection layer 5 is made of high-viscosity modified asphalt mortar and the lower anti-reflection layer 3 is made of polyester fiberglass cloth, which is especially suitable for joint laying; the thickness of the upper asphalt layer 6 is 4cm, and the mixture type is modified AC13; the thickness of the lower asphalt layer 4 5cm, the mixture type is modified AC16; cement concrete panel 2 C40 cement concrete panel with a thickness of 28cm.

[0024] The concept of "double anti-reverse layer" was proposed for the first time, and it was proposed that in the composite pavement structure, double-layer asphalt mixture pavement should be used, with a total t...

Embodiment 2

[0031] like figure 1 As shown, the double anti-reflection structure for the prevention and treatment of composite pavement reflective cracks includes, from top to bottom, asphalt upper layer 6, upper anti-reflection layer 5, asphalt lower layer 4, lower anti-reflection layer 3, cement concrete panel 2 and subgrade 1, The upper anti-reflection layer 5 adopts polyester fiberglass cloth, and the lower anti-reflection layer 3 adopts rubber asphalt stress absorption layer; the thickness of the upper asphalt layer 6 is 4cm, and the mixture type is modified SMA13; the thickness of the asphalt lower layer 4 is 5cm, and the mixture type is Modified AC16; cement concrete panel 2 C40 cement concrete panel with a thickness of 28cm.

Embodiment approach

[0032] A method for implementing a double anti-reflective structure for preventing and treating reflective cracks on a compound pavement, comprising the following steps:

[0033] (1) Lay cement concrete panel 2 on subgrade 1, and subgrade 1 and cement concrete panel 2 adopt the general cement concrete pavement structure and standard in "Code for Design of Highway Cement Concrete Pavement JTG D40-2011";

[0034] (2) Lay the lower anti-reflection layer 3, the lower asphalt layer 4, the upper anti-reflection layer 5, and the asphalt upper layer 6 on the cement concrete panel 2 in sequence.

[0035] The concept of "double anti-reverse layer" was proposed for the first time, and it was proposed that in the composite pavement structure, double-layer asphalt mixture pavement should be used, with a total thickness of 10~12cm, and fiber sealant or polyester fiberglass cloth should be used between the asphalt layers And other anti-reflection materials are used as the upper anti-reflection...

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Abstract

The invention discloses a double reflection crack prevention structure for preventing reflection cracks of a composite pavement and an implementation method thereof. The double reflection crack prevention structure sequentially comprises a pitch upper layer, an upper reflection crack prevention layer, a pitch lower layer, a lower reflection crack prevention layer, a cement concrete face and a road bed from top to bottom. The invention provides the structure system consisting of upper and down double reflection crack prevention layers for the first time, which can effectively solve the problem of reflection crack of the composite pavement. If two pitch surface layers are arranged, the pitch surface layers can be laid in two steps, namely the pitch surface layers are laid by a two-stage method, and a relatively good reflection crack prevention effect is achieved. The double reflection crack prevention structure for preventing reflection cracks of a composite pavement and the implementation method thereof are convenient and practical, have remarkable effect and are easy to popularize.

Description

technical field [0001] The invention relates to the field of preventing and treating reflective cracks on road surfaces, in particular to a double anti-reverse structure for preventing and controlling compound reflective cracks on road surfaces and an implementation method thereof. Background technique [0002] The cement concrete panel is used as the rigid base, and the asphalt mixture flexible surface layer is paved on it to form a composite pavement structure, which can not only give full play to the characteristics of good durability and high bearing capacity of the cement concrete panel, but also give full play to the characteristics of the asphalt mixture. The characteristics of comfortable driving and low noise, as a long-life pavement structure, have received more and more attention in recent years. In addition, with the continuous development of the economy and society, many urban roads and third- and fourth-class road cement pavement upgrades , commonly known as "w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32
Inventor 王火明李汝凯陈飞徐霈王伟谭巍陈天泉
Owner CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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