Composite pavement road with asphalt layer coated on sisal hemp fiber cement-based composite material

Abstract

The invention provides a composite pavement road with an asphalt layer coated on a sisal hemp fiber cement-based composite material. A pavement structure of the composite pavement road sequentially comprises an epoxy asphalt concrete surface layer, an interface performance enhancing layer, a sisal hemp fiber cement-based composite material bearing layer, a base layer and a sub-base layer from topto bottom. And the base layer is made of graded stabilized macadam with a flexible characteristic. Main components of the sisal hemp fiber cement-based composite material are cement, fly ash, fine sand, a superplasticizer, an adhesive and sisal hemp fibers, and the sisal hemp fiber cement-based composite material is used as a bearing layer, so that early-stage diseases such as pavement cracks, water damage and ruts can be effectively prevented, the pavement durability is greatly improved, and the service life is prolonged. The coated asphalt layer can improve driving comfort. Meanwhile, due tothe fact that the thickness of the asphalt layer is reduced, the manufacturing cost of the road surface can be remarkably reduced, environmental protection is facilitated, and good social benefits and huge economic benefits are reflected.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a composite pavement road covered with an asphalt layer on a sisal fiber cement-based composite material. Background technique [0002] In recent years, highway construction has developed rapidly, and semi-rigid base asphalt pavement accounts for more than 90% of the completed high-grade highways. However, currently commonly used semi-rigid base materials such as cement-stabilized aggregates and fly ash-stabilized aggregates are designed according to dense gradation. During use, there are often problems such as reflective cracks, poor drainage, and insufficient bearing capacity. That is to say, early damage such as cracking and potholes occurs, which is far from reaching the design life, and the durability is insufficient, which seriously affects the performance of road performance, causing bad social impact and huge economic losses. [0003] At present, the highway pav...

AI Technical Summary

Problems solved by technology

However, since there is no coarse aggregate in the sisal fiber cement-based composite material, its anti-wear performance is poor. In order to ensure better driving comfort and convenient construction and operation, the pavement surface wear layer is paved with epoxy asphalt concrete

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