Premixed permeable concrete matching ratio design and preparation method thereof

Abstract

The invention discloses a premixed permeable concrete matching ratio design and a preparation method thereof, and belongs to the technical field of premixed permeable concrete for building. The premixed permeable concrete comprises the following components according to a mass per cubic meter (kg / m<3>): 280-450 kg / m<3> of cement, 25-50 kg / m<3> of a reinforcing agent, 1500-1650 kg / m<3> of coarse aggregate, 5-10 kg / m<3> of an additive, and 100-125 kg / m<3> of water. A strength grade of the premixed permeable concrete is C15-C35; breaking strength is 2.0-4.0 MPa; continuous porosity is 10-25%; a permeability coefficient is greater than or equal to 1.0 mm / s; and a surface thickness is greater than or equal to 80 mm. The preparation method comprises the following steps: stirring, discharging, transporting, unloading, supporting by a template, laying a lower surface, laminating and maintaining, joint-cutting and spraying by a finish agent. So the method is beneficial to the environmental protection, and capable of meeting requirements of on-site civilized construction, improving compressive strength in a certain degree, improving a stacking form of an aggregate and slurry system, and improving communication porosity and permeability coefficient of the permeable concrete.

Description

technical field [0001] The invention belongs to the technical field of ready-mixed permeable concrete for construction, and in particular relates to a design of mix ratio of ready-mixed permeable concrete and a preparation method thereof. Background technique [0002] The research on permeable concrete started late in our country, so there are still some problems in preparation technology and construction technology. At present, the construction method of most permeable concrete in China is to use a forced mixer for on-site mixing at the construction site. The volume of permeable concrete produced by each mixing is small. Since permeable concrete is a porous structure material, the mixture loses water very quickly. Work Performance is not easy to maintain. In order to ensure the quality of the project, it is often necessary to ensure that the time for the mixture to be transported from the machine to the pouring site is short, and the construction arrangement is compact and...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that most of the domestic permeable concrete still adopts the production mode of on-site mixing and pouring, the production efficiency is low, and it cannot meet the large-scale demand for permeable concrete in the construction of "sponge cities", and it will bring relatively large dust pollution and noise pollution to the surrounding environment, etc. Problem, the present invention proposes a ready-mixed permeable concrete mix ratio design and its preparation method. The commercial concrete station is used to centrally mix the permeable concrete, and the production mode of the tank truck to transport the site can not only meet the needs of large-scale application in the market, but also ensure the construction of the project. quality stability

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