Study on preparation and properties of nanoparticles modified foam concrete thermal insulation building materials
The researchers used nanoparticles to enhance the insulation properties of foamed concrete and tested them.Four kinds of nanoparticles were used as modifiers to prepare nano-particle foam concrete by combining cement,fly ash and perlite.The test results show that the addition of nanoparticles improves the thermal insulation performance of foamed concrete.Among them,the foam concrete prepared with ZR972 hydrophobic nano modifier shows the highest compressive strength and the lowest thermal conductivity,and the best heat insulation effect.When the nanoparticle content is 0.15%,the material has the highest pure slurry flow,tensile strength of about 90MPa and density of 248kg/m2,and the insulation effect is the best.When the content of nano-modifier is 70g and the content of perlite is 300g,the prepared nano-particle reinforced foamed concrete exhibits better thermal insulation performance.
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