Assembled type anti-shear asphalt pavement and laying method thereof

An asphalt pavement and assembled technology, which is applied in the field of assembled shear-resistant asphalt pavement and its pavement, can solve the problem of overall mechanical properties of composite structures, water stability and fatigue life reduction, normal traffic obstruction of the road surface, fatigue cracking of composite pavement, etc. problems, to achieve the effect of improving water stability and integrity, ensuring road surface quality, and improving pollution

Active Publication Date: 2017-05-31
JIANGSU TIANNUO ROAD MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this composite pavement is composed of asphalt mixture (flexible frame) and cement mortar (rigid filler). After frequent wheel shear stress, temperature shrinkage changes and dynamic water action, the flexible frame and The rigid filler will peel off, and the overall mechanical properties, water stability and fatigue life of the composite structure will be greatly reduced; in addition, the flexibility of the composite pavement depends on the strain borne by the large-void asphalt mixture, and the coarse-void asphalt mixture in the large-void asphalt mixture The aggregate co...

Method used

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  • Assembled type anti-shear asphalt pavement and laying method thereof
  • Assembled type anti-shear asphalt pavement and laying method thereof
  • Assembled type anti-shear asphalt pavement and laying method thereof

Examples

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Embodiment 1

[0044] A certain asphalt pavement, two-way 4 lanes, single lane width 3.75m, the original pavement structure layer is: the upper layer is 4cm modified asphalt horseshoe grease macadam mixture SMA-13, the middle layer is 6cm modified asphalt concrete Sup- 20. The lower layer is 8cm heavy traffic asphalt mixture Sup-25. According to the statistical results of traffic volume, the average daily traffic volume of large passenger cars and medium-sized and above various trucks per lane is 2300 (vehicles / day*per lane), which belongs to heavy-duty traffic, and the road surface rutting is serious. The vehicle withdrawal depth, action width and length of this road section were measured with a three-meter ruler. The rut depth was 0.8cm-2.0cm, the action width was 3.6m, and the length was 46m. Drilling samples were taken on the original pavement, and the rutting defects were mainly concentrated in the middle and upper layers, while the lower layers were structurally intact and no diseases ...

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Abstract

The invention relates to an asphalt pavement structure and a construction method thereof, specifically to an assembled type anti-shear asphalt pavement and a laying method thereof. The assembled type anti-shear asphalt pavement comprises the following structural courses which are laid in sequence from top to bottom, wherein the structural courses are a (3.5-4.5) cm wearing course, which is waste tire rubber powder and SBS composite modified stone mastic asphalt mixture SMA-13, a waterproof adhesive course and a bearing course, which is modified emulsified asphalt and cement composite grouting asphalt mixture SFC-20. The assembled type anti-shear asphalt pavement has the advantages of good integral strength, good flexibility, long fatigue life, good crack resistance, convenient construction and maintenance, short construction period and less construction pollution.

Description

technical field [0001] The invention relates to a structure and a construction method of an asphalt pavement, in particular to an assembled shear-resistant asphalt pavement and a paving method thereof. Background technique [0002] Asphalt concrete is a kind of flexible material. Under the repeated action of heavy load and strong shear stress, the thickness of the asphalt layer at the wheel track gradually becomes thinner, and rutting appears on the road surface after the accumulation of permanent deformation, which weakens the overall strength of the surface layer and pavement structure. , and easily induce other diseases. Especially at urban traffic light intersections, bus stops, road intersections and expressway toll stations, due to frequent vertical and horizontal loads such as vehicle starting, acceleration, deceleration, braking, etc., the asphalt pavement is prone to severe waves, hugging, etc. , rutting and other shear deformation or vertical deformation diseases....

Claims

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Application Information

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IPC IPC(8): E01C7/32E01C23/06E01C23/09
CPCE01C7/32E01C23/06E01C23/09Y02W30/91
Inventor 肖护兵李秋飞柳卫军郭兆民张天俊卜进
Owner JIANGSU TIANNUO ROAD MATERIAL TECH
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