Highway, pavement structure and construction method of highway pavement

Abstract

The invention discloses a highway pavement structure. The highway pavement structure is characterized in that a pavement middle layer is arranged above a pavement lower layer; a pavement upper layer is arranged above the pavement middle layer; and an FRP (fiber reinforced polymer) waterproof layer is arranged on the junction surface of the pavement lower layer and the pavement middle layer. Meanwhile, the invention also provides a highway comprising the above pavement structure. Furthermore, the invention also provides a construction method of the highway pavement. The construction method comprises the following steps of: installing a first FRP grid mesh on a subgrade after completing subgrade flattening and compaction and paving and compacting a cement stabilized macadam base; pouring concrete on the pavement lower layer after installing a second FRP grid mesh on the base; pasting the FRP waterproof layer on the top surface of the concrete; bonding, paving and compacting asphalt concrete on the pavement middle layer and pavement upper layer on the upper surface of the FRP waterproof layer. The highway, the pavement structure and the construction method have the beneficial effects that uneven settlement caused by permeation of water into the subgrade can be avoided as the FRP waterproof layer has good waterproofness and then the pavement flatness can be ensured.

Description

technical field [0001] The invention relates to the technical field of civil engineering, and more specifically, relates to a highway, a road surface structure, and a construction method for a highway pavement. Background technique [0002] The highway pavement is the uppermost structural layer of the highway, and the car runs at high speed on the highway pavement. In order to ensure the smoothness of the car, the smoothness of the road surface is very important. [0003] figure 1 It is a structural schematic diagram of an expressway or a first-class road pavement structure in the prior art. The pavement is a composite structure of cement concrete and asphalt concrete. From bottom to top: 20 cm thick cement stabilized macadam base 01, 26 cm thick cement concrete material pavement lower layer 02, 6 mm thick emulsified asphalt slurry dust seal 03, 6 cm thick AC-16 modified asphalt Concrete material pavement middle layer 04 and 4 cm thick AC-13 modified asphalt concrete pav...

AI Technical Summary

Problems solved by technology

[0004] The main defects or deficiencies of the prior art are as follows: the 6 mm thick emulsified asphalt slurry on the upper part of the 26 cm thick cement concrete material pavement lower layer 02 has a poor waterproof effect for dust sealing, and the pavement water will penetrate into the cement stable crushing of the lower part. The stone base 01 and the subgrade below are likely to cause uneven settlement or softening of the subgrade, which in turn will lead to cracking or damage of the cement stabilized gravel base 01, resulting in uneven settlement, cracking or damage of the cement concrete and asphalt concrete composite structure pavement

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