Pavement structure based on modified roller compacted concrete pavement on enzyme soil solidified base layer

Abstract

The invention provides a pavement structure based on a biological enzyme soil (enzyme soil for short) solidified base layer, a subbase layer (base layer for short) and biological enzyme, rubber powder, fiber (multi-element for short) three-times (multiple-times) modified roller compacted concrete pavement. The pavement structure comprises a subbase layer (3), a base layer (2) and a surface layer (1), wherein the base layer (2) is paved on the subbase layer (3), the surface layer (1) is paved on the base layer (2), the subbase layer (3) and the base layer (2) are stable layers (enzyme soil solidified base layer for short) formed by solidification of the biological enzyme soil solidified base layer, and the surface layer (1) is a layer formed by multi-element multi-time modified roller compacted concrete. The invention aims to provide a novel pavement structure. A road pavement formed by using the pavement structure has the performance advantages of high toughness, impaction resistance, cracking resistance, sliding resistance, abrasion resistance, inflaming retardance, noise reduction, and the like, and is easy to maintain. According to the pavement structure, the riding comfort can be effectively improved, the riding environment is improved, and the use performance of a road is enhanced.

Description

technical field [0001] The invention relates to the field of road engineering pavement engineering, in particular to a pavement structure of a modified roller compacted concrete surface layer based on an enzyme-soil solidified base layer. Background technique [0002] The purpose of pavement design is to provide a technologically advanced, economically reasonable, safe, reliable, and durable pavement structure, so that it can meet the requirements of use under the action of driving loads and environmental factors within the predetermined design period. How to design a more scientific and reasonable highway pavement and continuously improve the performance and durability of the pavement has always been the main topic of pavement technology research. Although my country currently has a set of relatively complete pavement structure design and construction technical specifications to guide pavement design, it is only a general principle of pavement design and construction based ...

AI Technical Summary

Problems solved by technology

However, the cement concrete pavement has joints, high noise, poor driving comfort, high maintenance cost, and long maintenance cycle; the deformation coordination ability between the surface layer and the base layer is poor, and it is easy to be damaged. Structural damage such as broken edges, broken corners, etc.; on roads with heavy traffic and many heavy-duty vehicles, the erosion resistance of the base layer is required to be high, otherwise there will be mud pumping, wrong platform and edge gnawing at the joints. It causes bumpy driving on the road surface; maintenance and repair are difficult. After the concrete pavement is damaged, excavation and repair work are very troublesome and affect traffic. After construction, it will be open to traffic after 15-20 days of wet curing; the surface layer of cement concrete pavement is relatively thick. Generally more than 20cm, the demand for cement and water is large; the reflection in the sun is too strong, and the driver feels uncomfortable

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