Porous cement concrete cement overlay having bond coat laying on bituminous surface and construction method therefor

Abstract

The invention relates to a porous cement concrete road which has an adhesive layer above a pitch face layer, wherein above the pitch face layer 3, the invention mixes polymer and stuff uniformly, to form polymer mixture, then lays uniform the mixture mechanically or hand-operated on the pitch face layer 3 to form an adhesive layer 2, then uses cement concrete mixer to mix uniformly cement, broken stone, sand and water to form porous cement concrete, mechanically lays porous cement concrete, flattens and presses the concrete mechanically or hand-operated to form a porous cement concrete face layer 1 to be adhered on the adhesive layer 2. The inventive cover structure has high strength, better anti-crack property, noise-reduction property or the like.

Description

1. Technical field [0001] The invention relates to pavement engineering such as road engineering and its construction method, in particular to a porous cement concrete overlay with a bonding layer on the asphalt surface and its construction method. 2. Background technology [0002] 1. Asphalt surface overlay and overlay method [0003] Asphalt pavement is one of the main pavement forms commonly used in highways and urban roads. When the asphalt pavement needs to be overlaid or overlaid, the following two methods are currently used: [0004] First, add cement concrete on the asphalt surface. In this case, the overlay material is cement concrete, and the overlay cement concrete belongs to a dense structure, which is formed by pouring and vibrating processes. [0005] Second, add asphalt concrete on the asphalt surface. Before laying asphalt concrete, it is necessary to sprinkle asphalt and sticky asphalt on the cement concrete surface below to ensure that the asphalt concre...

AI Technical Summary

Problems solved by technology

[0007] When laying the cement concrete layer, the traditional ordinary cement concrete is a brittle material with small deformation capacity, easy to crack, sensitive to the support condition, and prone to disease on the road surface. In addition, the large shrinkage of the concrete during construction will also lead to concrete cracking

[0008] When paving the asphalt layer, due to the poor durability and short service life of asphalt materials, it may still need to be paved after a few years, and the overall cost is expensive

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