Foam concrete insulation board prepared by use of quicklime spontaneous heating

Abstract

The invention relates to a foam concrete insulation board prepared by use of quicklime spontaneous heating. The foam concrete insulation board comprises the following components in parts by weight: 100-140 parts of cement, 30-40 parts of an admixture, 5-11 parts of an additive, 1-2 parts of fiber, 6-10 parts of a foaming agent and 90-140 parts of water. The foam concrete insulation board is prepared as follows: (1) evenly mixing according to the formula ratio; (2) adding the water into a uniformly mixed material in the step (1), stirring at a constant speed, adding the liquid foaming agent and stirring under the condition of continuous stirring, stopping stirring, pouring into a mould for static foaming; and (3) after stripping, curing prepared foam concrete at 20 DEG C for 48 hours. The foam concrete insulation board prepared by use of a chemical foaming method can avoid to cause the energy waste in the process of heating water temperature according to the fact that quicklime can release heat when meeting the water and has a stimulating effect on activity of fly ash, effective calcium oxide in the quicklime can react with silica in the fly ash to produce a hydration product, and the hydration product has the product strength enhancement effect.

Description

technical field [0001] The invention relates to building concrete, in particular to a foam concrete insulation board prepared by utilizing quicklime self-heating. Background technique [0002] Foamed concrete is widely used in the construction field because of its light weight, good thermal insulation performance and good fire resistance, and is an indispensable new building material. [0003] Foamed concrete has a high porosity, and when the size of the cells is suitable and evenly distributed, the foamed concrete will have high strength. The foamed concrete prepared by the chemical foaming method, due to the relationship between stirring and temperature, makes its internal pore structure meet the requirements. It is difficult, and there will be problems such as foam collapse and uneven foaming. Improving the strength of foam concrete is the focus of the research process. [0004] In the process of chemical foaming, both water temperature and ambient temperature will have ...

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Problems solved by technology

[0004] In the process of chemical foaming, both water temperature and ambient temperature will have an impact on the preparation of foamed concrete. Considering that the ambient temperature and water temperature are crucial to the preparation process of foamed concrete, if the water temperature is adjusted according to the ambient temperature for the preparation of foamed concrete, the increase will increase. Preparation cost, experimental process is more cumbersome