Pavement structure with low cost, environmental friendliness and long service life

Abstract

The invention discloses a pavement structure with the low cost, environmental friendliness and long service life and relates to a road engineering pavement structure. The pavement structure is provided with a surface layer, an upper sealing layer, a middle face layer, a viscous layer, a lower face layer, a lower sealing layer, a semi-rigid base layer and a graded crushed stone base layer from top to bottom. The surface layer adopts an OGFC-10 thin layer; the upper sealing layer adopts a rubber asphalt fiber synchronized gravel sealing layer; the middle face layer adopts a rubber powder modified asphalt limestone SMA-20 mixed material without adding fibers; the viscous layer adopts SBR modified emulsified asphalt; the lower face layer adopts an ATB-30 ordinary mixed material; the lower sealing layer adopts a rubber asphalt fiber synchronized gravel sealing layer; the semi-rigid base layer adopts a cement stable crushed stone mixed material; and the graded crushed stone base layer is laid on the road bed surface. According to the pavement structure, the service life and the maintenance period of a road can be effectively prolonged, the cost is relatively low, the environmentally friendly function is achieved, environmental, economic and social benefits are significant, and good application prospects are achieved.

Description

technical field [0001] The invention relates to a road engineering pavement structure, in particular to a low-cost, environment-friendly and long-life pavement structure. Background technique [0002] The existing long-life asphalt pavement structure has a single form and only considers the service life of the pavement structure. Usually, the technical means are to improve the road performance of the mixture or increase the thickness of the structural layer, such as using high-performance SMA mixture instead of AC Mixture, or replace the bottom layer of the traditional pavement structure with 6-7cm AC-25 asphalt concrete with 1 or 2 layers of 8-12cm ATB-25 or ATB-30 asphalt stabilized macadam. Although the above measures can effectively prolong the service life of the pavement structure, the engineering cost will increase significantly (for example, when SMA is used as the surface layer, it is necessary to use high-quality basalt and add fiber stabilizers to meet the wear re...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of single function and high cost of existing long-life pavement structure, and provide a new type of low-cost environmental protection long-life pavement structure, which can not only achieve long-life effect, but also reduce engineering cost and have environmental protection function

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