Super-light foam cement concrete and preparation method thereof

Abstract

The invention discloses a super-light foam cement concrete and a preparation method thereof. The super-light foam cement concrete comprises the following raw materials by weight parts: 9-36 parts of dead burnt magnesium oxides, 9-32 parts of dihydric phosphates, 0.5-7 parts of adjustable solidification agents, 6-25 parts of light burnt magnesium oxides, 0.5-7 parts of sulfur-containing components, 1-25 parts of industrial slag powder, 1-20 parts of kieselguhrs, 0.3-3.9 parts of waterproof agents, 0.2-1.7 parts of foam stabilizing agents, 1.0-8.9 parts of foaming agents and 25-90 parts of water. The preparation method of the high-performance super-light foam cement concrete comprises the following steps of: metering raw materials; preparing the slurry containing the foam stabilizing agents; uniformly mixing the foaming agents; pouring and standing by; foaming and expanding; coagulating and curing; and naturally maintaining. The super-light foam cement concrete has the advantages of light weight, high strength, heat preservation and insulation, stable volume, low production cost, energy-saving property, no environmental pollution, and the like. The super-light foam cement concrete is simple in production process and is especially suitable for the heat-insulating material of external building wall, roof and floor.

Description

Technical field [0001] The invention involves a light cement concrete in the field of construction engineering technology, especially a high -performance ultra -light foam cement concrete. Background technique [0002] After the water is uniformly mixed with foaming, the porous materials made of maintenance have the functions of light quality, fire prevention, thermal insulation, and heat insulation. It is a good way to achieve energy -saving insulation and avoid fire accidents.Construction with a simple method fixed with rivets, the advantages are more obvious in the energy -saving transformation of existing buildings.Therefore, the outer wall, floor and roof of the building use foam concrete to achieve energy saving of the building, and more and more actual projects are applying. [0003] At present, the inorganic gel material of foam concrete is ordinary silicate cement, sulfate aluminum cement or chloride cement.China Invention Patent Application 200910078347.7 disclosed an u...

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Problems solved by technology

[0004] In the above-mentioned patent documents of foamed concrete, Chinese invention patent applications 200910078347.7, 201010607495.6, 200410021951.3 and 201010140498.3 use Portland cement, fast-setting sulfoaluminate cement or iron-aluminate cement + blowing agent or foaming agent, although the laboratory The sample can achieve higher strength, but the strength of the actual product is very low

Chinese invention patent application 201010562916.8 uses light-burned magnesium oxide and magnesium chloride as gelling materials. After adding foaming agent, although the strength of the product is high, the heat preservation effect is not good, the thermal conductivity is too high, and it contains a large amount of chloride ions, which is easy to absorb. It is easy to corrode the steel bars in the main structure of the building, so it is difficult to popularize and apply. The development of foam concrete with magnesium phosphate cement and magnesium oxysulfide cement as the main cementitious material can not only ensure high strength but also achieve heat preservation, it will definitely Has a large market and broad prospects for promotion and application