Lightweight wall special-purpose cell concrete, and production method thereof

Abstract

The invention discloses a lightweight wall special-purpose cell concrete, and a production method thereof. The production method comprises following steps: (1) rapid hardening sulphoaluminate cement, ordinary Portland cement, and dry discharge fly ash are delivered into a double helix conical mixer so as to obtain a composite cementing agent via premixing; (2) water, cold-water-soluble polyvinyl alcohol powder, polypropylene reinforcing fiber, calcium stearate water repellent, a silane coupling agent, expanded perlite, and polyphenyl foam particle are delivered into an agitator; (3) the composite cementing agent obtained via step (1) is delivered into the agitator, and micropore foam prepared from a micropore foaming agent via compressed air is sprayed into the agitator, an uniform slurry is obtained via mixing stirring, and slurry volume weight is controlled to be 1000 to 1200kg / m3; (4) the uniform slurry is pumped into lightweight wall products or cast-in-situ wall forming moulds; and (5) finished products are obtained via curing, hardening, moulding, and demoulding. The lightweight wall special-purpose cell concrete can be used for producing various lightweight wall products and cast-in-situ lightweight concrete walls, and is an ideal material used for producing energy-saving lightweight walls and products.

Description

technical field [0001] The invention relates to the field of new building energy-saving wall materials in the building materials industry, and specifically refers to a special microporous concrete for light wall materials and a production method thereof. Background technique [0002] At present, light-weight wall material products are mostly prepared by ordinary lightweight aggregate concrete and foamed concrete, which have a large dry shrinkage value and serious wall cracking. Lightweight aggregate concrete and foamed concrete have a large and uneven matrix foam pore size. High thermal conductivity, poor thermal insulation performance. The production process is limited, the adjustable range of volume density is narrow, the controllability is poor, and the performance is unstable. Seriously hinder the development of building energy saving and wall reform. Need to research and develop a kind of special concrete that is applicable to lightweight energy-saving wall material...

AI Technical Summary

Problems solved by technology

It solves the problems of heavy weight, poor thermal performance, large drying shrinkage and easy cracking, uncontrollable production process and unstable performance of existing concrete for light wall materials.

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