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

Abstract

The invention relates to a porous cement concrete road which has an adhesive layer above the concrete, wherein above a cement concrete bottom layer 3, the invention mixes polymer and stuff uniformly, to form polymer mixture, then lays uniform the mixture mechanically or hand-operated on the bottom 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 a construction method thereof, in particular to a porous cement concrete overlay with a bonding layer on the cement concrete and a construction method thereof. 2. Background technology [0002] 1. Cement concrete pavement overlay and overlay method [0003] Cement concrete pavement is one of the main pavement forms commonly used in highways and urban roads. When the cement concrete pavement needs to be overlaid or overlaid, the following two methods are currently used: [0004] One, paving cement concrete on the cement concrete pavement. In this case, the overlay material is still cement concrete, and the overlay cement concrete belongs to a dense structure, which is formed by pouring and vibrating processes. According to the stress state of the overlay, it can be divided into combined overlay and separated overlay. The combined overlay means that the overlay and the cement...

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 overlaying asphalt concrete, due to the low strength of the overlay asphalt concrete, it must be well bonded with the bottom layer to ensure the normal operation of the overlay layer. There is a large difference in the amount and a large difference in the temperature deformation coefficient. Generally, it is not easy to achieve good bonding. This is also the root cause of the short service life of "white plus black"

Images