Asphalt pavement structure

Abstract

The invention discloses an asphalt pavement structure. The structure comprises a pavement layer which is located on a base layer and formed by paving aggregate, artificial reinforced aggregate and an asphalt mixture, the artificial reinforced aggregate is a plurality of artificial particles with insertion strips, the insertion strips of the artificial particles are distributed in space to form a multi-stage space framework structure, and the aggregate is embedded and extruded between the insertion strips of the artificial reinforced aggregate. The artificial reinforced aggregate with the multi-stage space skeleton structure and the aggregate are mixed with the asphalt mixture for paving, the artificial reinforced aggregate and the aggregate are interlocked, lapped and engaged to form an interlocking structure, and with the bonding effect of the asphalt, the formed pavement structure layer is higher in strength. After the artificial particles and common aggregate are extruded in an embedded manner, relatively high internal friction resistance can be formed, so that the aggregate cannot slip, a plastic flowing trend cannot be generated under the action of an external horizontal load, the interlocking effect is strong, and the stability and deformation resistance of the asphalt mixture can be improved.

Description

technical field [0001] The invention relates to the field of roads and bridges, in particular to an asphalt pavement structure. Background technique [0002] Asphalt pavement is a combination of asphalt and mineral aggregates through a certain physical-chemical action. It is characterized by a large amount of asphalt and a large contact surface between coarse aggregates. It has both embedded and dense asphalt mixtures. performance. Aggregate properties will largely affect the mechanical properties of asphalt pavement such as high temperature anti-rutting, low temperature cracking and normal temperature fatigue resistance. The pavement performance of embedded and dense asphalt mixtures largely depends on the internal friction resistance and internal friction angle of the structure. The toughness, particle shape, surface texture, roughness and angularity of the coarse aggregate stone all affect the mutual embedding and bonding effect of the aggregate. If the crushing value ...

AI Technical Summary

Problems solved by technology

If the crushing value and abrasion value of gravel do not meet the requirements, the stability of the asphalt mixture will be low, which will have a great impact on the use function and long-term use characteristics of the asphalt pavement.

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