Waterproof asphalt pavement structure and construction method thereof

Abstract

A waterproof asphalt pavement structure comprises an asphalt wearing surface layer, an asphalt middle-lower surface layer, a roadbed surface layer and a roadbed; a waterproof adhesive layer is arranged between the asphalt wearing surface layer and the asphalt middle-lower surface layer; a waterproof permeable sealing layer is arranged between the asphalt middle-lower surface layer and the roadbed surface layer; a drainage pipe is arranged in the roadbed surface layer, and drainage holes are formed in the circumference of the drainage pipe; and one side of the road width direction is provided with a drainage ditch, the lower side of the drainage ditch extends to the roadbed, and the side, close to the drainage ditch, of the drainage pipe is communicated with the drainage ditch. The construction method comprises the following steps: firstly, building a roadbed, then paving the roadbed surface layer on the roadbed, burying the drainage pipe in the paving process of the roadbed surface layer, cleaning waste materials in the drainage pipe, and then paving the asphalt middle-lower surface layer and the permeable sealing layer; then uniformly spraying the waterproof adhesive layer on the asphalt middle-lower surface layer, and after demulsification and evaporation of emulsified asphalt are completed, paving the asphalt wearing surface layer and properly rolling; and building the drainage ditch at a reserved position on one side of the road surface in the width direction, and enabling the drainage pipe to be communicated with the drainage ditch.

Description

technical field [0001] The invention relates to a waterproof asphalt pavement structure and a construction method thereof. Background technique [0002] In fields such as highways and municipal facilities, shortened pavement life has become a major problem in construction. There are many reasons for early failure and shortened life of pavement. The durability of asphalt pavement on the research surface depends on the ecological environment of asphalt pavement; the effective way to increase the life of asphalt pavement is to improve the structure of asphalt pavement. The focus is on enhancing the structural stability of asphalt pavements and reducing pavement water damage. However, water damage can be divided into road surface water damage and groundwater damage. [0003] Asphalt pavement structure refers to the structure of asphalt pavement, which can be divided into suspension-dense structure, dense-skeleton structure, and skeleton-void structure. Suspension-dense struc...

AI Technical Summary

Problems solved by technology

This measure can greatly reduce the degree of frost heave of the subgrade, but the problem is that due to the rise of capillary water, groundwater will still cause frost heave damage inside the pavement structure

Even if a drainage cushion is installed, capillary water will seep into the cushion and condense into ice, which will cause frost heaving of the cushion, which will adversely affect the base

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