Ultra-thin high-sliding-resistance surface layer of asphalt pavement and construction method thereof

A technology of asphalt pavement and construction method, which is applied in the direction of roads, roads, and on-site coagulation pavement, etc., can solve the problems of reduced driving safety, reduced use function of pavement surface, and attenuation of anti-skid performance, and achieves improved surface use. function, good road performance and structural characteristics, improve the effect of anti-skid

Active Publication Date: 2020-02-28
CHANGAN UNIV
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  • Abstract
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Problems solved by technology

[0002] With the rapid development of road construction in our country, road engineering has changed from reconstruction to reconstruction and maintenance. With the increase of service time of many roads, the function of the surface of the road surface has declined rapidly, a

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  • Ultra-thin high-sliding-resistance surface layer of asphalt pavement and construction method thereof
  • Ultra-thin high-sliding-resistance surface layer of asphalt pavement and construction method thereof
  • Ultra-thin high-sliding-resistance surface layer of asphalt pavement and construction method thereof

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with specific embodiments.

[0032] The ultra-thin and highly skid-resistant surface layer of the asphalt pavement in the present invention includes a wear layer and an adhesive layer, and the wear layer is bonded with the asphalt pavement through the adhesive layer to form a whole. The wearing layer adopts asphalt mastic macadam mixture with a nominal maximum particle size of 6.35mm. The gradation range is determined according to the aggregate volume parameters. Therefore, when calcined bauxite is used to replace part of limestone, bauxite should be used The same volume replaces the limestone, and the particle size of the replaced part is 4.75mm-6.35mm and 6.35mm-9.5mm.

[0033] The mineral material gradation range of the ultra-thin high-skid-resistant surface layer of the asphalt pavement of the present invention is shown in the following table.

[0034]

[0035] The technical character...

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Abstract

The invention discloses an ultra-thin high-sliding-resistance surface layer of an asphalt pavement and a construction method thereof. The ultra-thin high-sliding-resistance surface layer comprises a wearing layer and an adhesive layer, wherein the wearing layer adopts an asphalt mastic gravel mixture with the nominal maximum size of aggregate being 6.35 mm, a new form of the grading range SMA-7 isprovided, the asphalt mastic gravel mixture is composed of calcined bauxite and limestone, differential burnishing is formed between the calcined bauxite and the limestone, the limestone with the particle size being 4.75 mm to 6.35 mm and the particle size being 6.35 mm to 9.5 mm is replaced with the calcined bauxite in an equivoluminal manner, and the content of aluminum oxide in the calcined bauxite ore is not lower than 88%; the burnishing value of the calcined bauxite is larger than that of the limestone, and the blending amount of the calcined bauxite is 10%-15% according to the mass fraction; and the wearing layer and the asphalt pavement are bonded into a whole through the adhesive layer. According to the ultra-thin high-sliding-resistance surface layer, the skid resistance, the wear resistance and the driving comfort and safety of the road surface can be improved, and the driving noise of the road surface is reduced.

Description

technical field [0001] The invention belongs to the field of road engineering, and in particular relates to an ultra-thin and highly skid-resistant surface layer of asphalt pavement and a construction method thereof. Background technique [0002] With the rapid development of road construction in our country, road engineering has changed from reconstruction to reconstruction and maintenance. With the increase of service time of many roads, the function of the surface of the road surface has declined rapidly, and the anti-skid performance has declined particularly significantly, reducing the safety of driving. In order to keep the pavement with good surface function continuously, it is necessary to study an ultra-thin high-skid-resistant surface layer of asphalt pavement under a new gradation. Contents of the invention [0003] The purpose of the present invention is to solve the problem that the performance of asphalt pavement deteriorates after long-term service in the pr...

Claims

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Application Information

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IPC IPC(8): E01C7/35
CPCE01C7/35E01C7/353
Inventor 熊锐宗有杰杨发关博文盛燕萍牛冬瑜李闯田海涛瞿春璞纪括冯宝珠
Owner CHANGAN UNIV
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