Self-compacting bituminous concrete waterproof seal and construction method thereof

Abstract

The invention relates to a self-compacting bituminous concrete waterproof seal and a construction method thereof. The self-compacting bituminous concrete waterproof seal is especially applicable to local waterproof sealing of high-speed railway or dedicated passenger line road beds in high and cold areas. Compared with the prior art, the self-compacting bituminous concrete waterproof seal and the construction method thereof have the advantages that the advantages such as good impermeability, freeze-thawing resistance, ageing resistance, deformation adaptability and high seal-healing capacity in the self-compacting bituminous concrete are given to full play, the road bed water controlling and drainage problems are solved by the use of the super-compact material structure, and water is prevented from permeating to damage the road beds; the waterproof seal is manually paved, thickness of the waterproof seal is determined through the use of wooden or steel forms, compacting by self-mobility is allowed, no compressing is required, constructing is simple and convenient, the requirement on environment is low, and the waterproof seal is suitable for structures, having small but abundant working faces, such as supports of overhead contact systems for high-speed railway road beds; the waterproof seal has ultra-long service life, less maintenance is required during using of the waterproof seal, the waterproof is easy to maintain, and a scheme about the ideal long-acting railway road bed waterproof seal is provided.

Description

technical field [0001] The invention relates to a waterproof sealing layer of a railway embankment, in particular to a self-compacting asphalt concrete waterproof sealing layer and a construction method thereof. Background technique [0002] As the foundation of the railway track, the roadbed's smoothness, uniformity and long-term stability are crucial to ensure the safe operation of high-speed trains. In seasonally frozen soil regions, frost heave and thaw settlement are one of the key factors that lead to the decline of subgrade smoothness and long-term stability, and the uneven deformation caused by subgrade frost heave and thaw settlement will greatly affect the track structure. Ride comfort and durability have become one of the major hidden dangers that affect the speed and safety of railway operations, and also cause great difficulties for railway maintenance. Due to the lack of mature experience in anti-frost heave measures for high-speed railway passenger dedicated ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a self-compacting asphalt concrete for the waterproof sealing layer of the high-speed railway subgrade surface in the alpine region, which adopts manual paving and relies on the fluidity of the concrete for self-compacting forming, avoiding the Asphalt concrete is rolled and compacted, which is especially suitable for waterproof sealing of local high-speed railway subgrade surfaces (between lines and road shoulders) in alpine regions, which solves the problems of difficult construction, poor waterproof performance and durability, and difficult repair in the prior art

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