Asphalt pavement embedded with anti-skid wear-resistant stones and construction method of pavement

Abstract

The invention discloses an asphalt pavement embedded with anti-skid wear-resistant stones and a construction method of the asphalt pavement. The construction method comprises the following steps: paving a coarse-grained asphalt concrete lower surface layer, paving a medium-grained asphalt concrete middle surface layer and paving a fine-grained asphalt concrete upper surface layer, the fine-grainedasphalt concrete upper surface layer comprises anti-skid wear-resistant stones located on the surface, and the anti-skid wear-resistant stone is formed by embedding high-polishing-value stone into premixed modified asphalt; stone in the fine-grained asphalt concrete upper surface layer is common stone except anti-skid wear-resistant stone on the surface, and a binding material of the stone is SBSmodified asphalt. The construction method concretely comprises the following steps: spreading a layer of anti-skid wear-resistant stone on the upper surface layer of the fine-grained asphalt concretewhich is just paved and is not rolled, embedding the anti-skid wear-resistant stone into the surface of the upper surface layer through multiple times of rolling of a road roller, and forming a 1-cmanti-skid wear-resistant layer at the same time. According to the invention, the anti-skid and wear-resistant stones can play anti-skid and wear-resistant roles, the construction process is simple, the use amount of anti-skid and wear-resistant materials is saved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to an asphalt pavement embedded with anti-skid and wear-resistant stones and a construction method thereof. Background technique [0002] In my country's highway asphalt pavement design specifications, in order to ensure the safety of vehicles, the top of the asphalt pavement is required to be anti-skid and wear-resistant, and the aggregate of the upper layer must use wear-resistant stones. Among conventional pavement materials in my country, only basalt and diabase with relatively small reserves meet the requirements, while limestone and granite with large reserves only meet the requirements, and at the same time, only 60% of them are used in the production process of wear-resistant materials. The left and right stones are usable, and the rest are waste. [0003] As of the end of 2019, the total mileage of my country's highways has reached 4.8465 million kilometers, and t...

AI Technical Summary

Problems solved by technology

However, most of the traffic accidents occur on road sections with large longitudinal slopes, small curve radii, heavy traffic volume, etc., where the anti-skid performance decays quickly, and the maintenance of these road sections is also relatively difficult.

At the same time, due to the adoption of general design principles, some road sections or lanes that do not require high anti-skid requirements have also been designed for anti-skid, resulting in unnecessary waste; some special road sections or lanes that require high anti-skid requirements have not been strengthened. Anti-skid design, leaving a driving safety hazard

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