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An integral anti-rutting pavement structure for heavy-duty traffic based on composite materials

A composite material and integral technology, which is applied to cohesive pavement paved on site, roads, roads, etc., can solve the problems of rapid repair of unfavorable heavy-duty rutted road sections, reduced anti-rutting and anti-fatigue performance, difficult construction quality, etc. , achieve significant economic and social benefits, avoid temperature and dry shrinkage, and facilitate construction

Active Publication Date: 2021-01-01
SHANDONG TRANSPORTATION INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this traditional single cement-based material slurry has poor fluidity and poor grouting fullness. At the same time, auxiliary grouting with mechanical equipment is required, which is inconvenient, time-consuming, labor-intensive, and difficult to guarantee the quality of construction. At the same time, the traditional technology The maintenance time is between 3 days and 7 days, and the open traffic is relatively slow, which is not conducive to the rapid repair of heavy-duty rutted road sections
In addition, because this material is used in the middle surface layer to play the role of anti-rutting, it is easy to produce interlayer slippage and delamination between it and the materials of the upper layer and the lower layer, which greatly reduces its anti-rutting and anti-fatigue performance

Method used

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  • An integral anti-rutting pavement structure for heavy-duty traffic based on composite materials
  • An integral anti-rutting pavement structure for heavy-duty traffic based on composite materials
  • An integral anti-rutting pavement structure for heavy-duty traffic based on composite materials

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Embodiment 1

[0045] as attached figure 1 As shown, the heavy-duty traffic road pavement structure of this embodiment is composed of a base layer 1 and a composite material structure layer 2 . A single composite material structure layer 2 is paved on the top surface of the base layer 1 .

[0046] Base 1 adopts cement stabilized crushed stone base.

[0047] The thickness of the composite material structure layer 2 is 14 cm, and it is paved with a base high-viscosity elastic asphalt mixture and a polyurethane composite material. The weight ratio of the base high-viscosity elastic asphalt mixture and the polyurethane composite material is 80%:20%.

[0048] 【Matrix High Viscosity Elastic Asphalt Mixture】

[0049] The design porosity of the mixture is 31%.

[0050] Synthetic grading is based on the percentage of mineral materials with various particle sizes passing through the standard size sieve hole. The 19mm sieve hole pass rate is 100%, the 16.0mm sieve hole pass rate is 97.4%, the 13.2mm...

Embodiment 2

[0072] as attached image 3 As shown, the heavy-duty traffic road pavement structure of this embodiment is composed of a base layer 1 , a composite material structure layer 2 and an anti-skid surface layer 3 .

[0073] After laying the paving material and paving method described in Example 1, after the matrix asphalt mixture with uneven surface is exposed, the following methods are used to lay the anti-skid surface layer 3:

[0074] Stir and mix water-soluble polyurethane emulsion, carbon black, and basalt mineral powder with a weight ratio of 100:20:10 to form a cementing material, use gold tailings as wear-resistant aggregates, and use a sprayer to synchronize the cementing material and wear-resistant materials at one time Spray on the road surface to form a non-slip surface. Among them, by weight, the spraying amount of cement is 0.4kg / m 2 , the spraying amount of gold tailings is 0.4kg / m 2 , the spraying vehicle travels at a speed of 5.5km / h. After spraying, cure for 2...

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Abstract

The invention discloses a heavy-duty traffic integrated anti-rutting paving structure based on a composite material, and belongs to the technical field of road paving. The paving structure comprisinga base layer is characterized in that a single composite material structure layer is paved on the top surface of the base layer, and the composite material structure layer is paved with a matrix high-viscosity elastic asphalt mixture and the polyurethane composite material, wherein the weight ratio of the matrix high-viscosity elastic asphalt mixture to the polyurethane composite material is (75-85%): (15-25%). Compared with the prior art, the paving structure has the advantages of small thickness, remarkable anti-rutting performance and high popularization and application value.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a heavy-duty traffic integral anti-rutting pavement pavement structure based on composite materials. Background technique [0002] The design life of expressways in my country is 15 years, and structural damage to the pavement usually occurs within 10 years (rutting and fatigue cracking have become the main diseases of high-grade highways in my country), which requires periodic overhaul and reconstruction. Calculated according to the 10-year overhaul cycle, the annual Generate 300 million tons of waste, resulting in huge financial and environmental pressure. In recent years, special roads with severe loads and frequent extreme high and low temperature weather conditions (such as long longitudinal slope roads, large-capacity bus lanes and harbors, port roads and port lanes, heavy-duty bridge deck pavement and Airport runways, etc.) have been built in large quantities, so higher req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/26E01C7/35
Inventor 王晓燕马士杰王林安平辛星赵海生刘卓雨胡宗文庄明
Owner SHANDONG TRANSPORTATION INST
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