Preparation and characterization of fly ash⁃metakaolin based geopolymeric foaming materials
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Graphical Abstract
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Abstract
Thealkaliactivatedflyash⁃metakaolinbasedgeopolymericfoamingmaterialswereprepared atlowtemperaturebyuseofflyash,metakaolin,sodiumhydroxide,sodiumsilicateasthemainrawma⁃ terial*Theeffectofthetypesandcontentsoffoamingagentontheporestructureandpropertiesofthe porous geopolymer were studied,and the thermal stability and structure were also investigated. Comparedtothealuminumandsodiumborate,thefoamingeffectofhydrogenperoxidewasbetter*The properties of geopolymeric foaming materials prepared in ths paper were with bulk density of 0*985g/cm3,compressivestrengthof8*9MPa,lowestthermalconductivityof0*10W/ (m·K)and goodthermalinsulationeffect,whenthecontentofhydrogenperoxidewas0*5%,theconservationtem⁃ peraturewas40℃,conservationhumiditywas70% andconservationtimewas7d*
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