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Ceramsite recycled concrete self-insulation material and preparation method thereof
The invention relates to a method for preparing a self-insulation material by combining ceramsite concrete and recycled concrete techniques. The method has the advantages that the natural coarse aggregate is not consumed, and a large amount of recycled concrete fine aggregate difficult to utilize in the structural concrete can be consumed. The specific preparation method comprises mixing 10%-25% of ceramsite, 4%-10% of glass beads, 20%-25% of cement, 0%-30% of recycled coarse aggregate, 10%-20% of recycled fine aggregate, 5%-10% of coal ash, 5%-15% of sand, 0%-0.5% of water reducing agent and 12%-20% of water together, stirring, injecting into a mold, and curing to form the self-insulation material. The lightweight high-efficient recycled concrete self-insulation material prepared by use of the method is small in apparent density, namely 1200kg/m3-1650kg/m3; the 28d compressive strength of the material is high, namely 10-25MPa; the heat conductivity coefficient of the material is small, namely 0.5-0.9W/(m.K), and compared with the common concrete of the same strength, the value of the heat conductivity coefficient is reduced by 45%-70%.
Ceramsite recycled concrete self-insulation material and preparation method thereof
The invention relates to a method for preparing a self-insulation material by combining ceramsite concrete and recycled concrete techniques. The method has the advantages that the natural coarse aggregate is not consumed, and a large amount of recycled concrete fine aggregate difficult to utilize in the structural concrete can be consumed. The specific preparation method comprises mixing 10%-25% of ceramsite, 4%-10% of glass beads, 20%-25% of cement, 0%-30% of recycled coarse aggregate, 10%-20% of recycled fine aggregate, 5%-10% of coal ash, 5%-15% of sand, 0%-0.5% of water reducing agent and 12%-20% of water together, stirring, injecting into a mold, and curing to form the self-insulation material. The lightweight high-efficient recycled concrete self-insulation material prepared by use of the method is small in apparent density, namely 1200kg/m3-1650kg/m3; the 28d compressive strength of the material is high, namely 10-25MPa; the heat conductivity coefficient of the material is small, namely 0.5-0.9W/(m.K), and compared with the common concrete of the same strength, the value of the heat conductivity coefficient is reduced by 45%-70%.
Ceramsite recycled concrete self-insulation material and preparation method thereof
WANG GUOJIE (author) / WU WENDA (author) / LUO SURONG (author) / YOU FAN (author) / ZHANG SHAOQING (author) / ZHENG JIANLAN (author)
2015-08-05
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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