High-performance permeable concrete system prepared by construction wastes and preparation method thereof

Abstract

The invention discloses a high-performance permeable concrete system prepared by construction wastes and a preparation method thereof. The high-performance permeable concrete system prepared by the construction wastes comprises a foundation pit excavated in the ground; a roadbed is laid in the middle in the foundation pit; a stable base course, a concrete course and a high-performance permeable surface course are laid at the upper part of the roadbed in the foundation pit in sequence; clearances are reserved between the internal walls of the two sides of the foundation pit and the edge of theroadbed; and flow guide units are arranged in the clearances. According to the high-performance permeable concrete system prepared by the construction wastes, the bearing strength, the tensile strength, the elongation at break and the impact strength are better; high water permeability and higher safety performance are realized; slipping of pedestrians and sideslip of a vehicle can be effectivelyprevented; the frequency of occurrence of traffic accidents can be greatly reduced; the service life is long; a cracking phenomenon of the high-performance permeable surface course caused by a factorof geological subsidence variation or cold shrinkage and thermal expansion can be effectively prevented; and the provided preparation method has the advantages of scientific and reasonable construction steps, short construction period, high construction efficiency and good construction quality.

Description

technical field [0001] The invention relates to the technical field of construction, more specifically, it relates to a high-performance permeable concrete system prepared from construction waste and a preparation method thereof. Background technique [0002] Construction waste refers to the dregs, spoils, waste materials, silt and other wastes generated during the construction, laying or demolition, and repair of various buildings, structures, and pipe networks by construction units or individuals. With the rapid development of our country, earth-shaking new changes have taken place in most cities, especially in the construction industry. There are many high-rise buildings in various cities and are prosperous. However, a large amount of construction waste is produced in the process of urban upgrading and transformation. It takes up a lot of space and pollutes the environment, so it is necessary to recycle construction waste. [0003] In the prior art, construction waste wi...

AI Technical Summary

Problems solved by technology

With the rapid development of our country, earth-shaking new changes have taken place in most cities, especially in the construction industry. There are many high-rise buildings in various cities and are prosperous. However, a large amount of construction waste is produced in the process of urban upgrading and transformation. It takes up a lot of space and pollutes the environment, so it is necessary to recycle construction waste

[0003] In the prior art, construction waste will be made into a permeable concrete system. However, the existing permeable concrete system prepared from construction waste has poor compressive strength, tensile strength, elongation at break, and impact strength, and cannot meet the requirements of << Permeable Cement Concrete Pavement Technical Regulations (CJJ / T 135-2009) stipulates the standard requirements for the permeable concrete grades C20 and C30. Secondly, its permeable performance and safety performance are poor, especially in rainy weather. In the upper part, a large amount of rainwater will accumulate on the upper surface, which will reduce the static friction coefficient of the upper surface, which will lead to a decrease in the static friction force between pedestrians or vehicles and the upper surface, which will easily cause pedestrians to slip and vehicles to slip, and more importantly The most important thing is that the braking distance of the vehicle cannot be effectively guaranteed, resulting in a significant increase in the frequency of traffic accidents. In addition, its service life is short, and its surface is often cracked due to geological subsidence changes or thermal expansion and contraction. In addition, the current Some methods of preparing permeable concrete system prepared from construction waste have unscientific and unreasonable construction steps, long construction period, low construction efficiency, and poor construction quality. Therefore, a high-performance permeable concrete system prepared from construction waste and its preparation are proposed. method

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