Lub teeb pob zeb Additives | High-Performance Foaming Agents rau Cellular Concrete
Foaming agents yog cov tshuaj additives uas tsim cov npuas dej hauv cov pob zeb sib xyaw uas tsim kom muaj lub cev nyhav ntawm tes. Ua npuas ncauj pob zeb feem ntau yog siv rau hauv geotechnical daim ntaub ntawv vim nws qhov ntom ntom thiab zoo shear kuj., txwv qhov kev pheej hmoo ntawm kev puas tsuaj rau cov av thiab lwm yam khoom siv qib sub [2].
Hom foaming tus neeg saib xyuas yog qhov tseem ceeb vim nws txiav txim siab cov yam ntxwv ntawm cov khoom foamed xws li kev ruaj ntseg, dej nqus thiab Frost tsis kam. Muaj ntau tus neeg ua foaming, suav nrog ntau yam ntawm cov hluavtaws ncaj (SS) thiab cov khoom noj muaj protein ntau. Nws raug pom zoo tias txhua tus neeg ua npuas dej uas tau xaiv yuav raug kuaj nrog cov ntaub ntawv hauv zos kom paub meej tias qhov kev xav tau sib haum.
Qhov pore loj faib thiab porosity ntawm cov npuas dej kuj tseem ceeb hauv cov pob zeb ua npuas ncauj. Cov pore qhov ntau thiab tsawg yog cuam tshuam los ntawm tus neeg sawv cev foaming thiab aggregates. Kev nthuav dav ntawm cov pores me me txhim kho lub zog thiab txo qis kom qhuav shrinkage. Qhov pore loj yog txiav txim los ntawm tus neeg sawv cev foaming, yog li kev siv tus neeg sawv cev ua npuas ncauj ntau dua ua rau qhov pore loj thiab txhim kho lub zog.
Kev siv ntau hom aggregates kuj tseem ceeb hauv cov pob zeb ua npuas ncauj. Cov hom aggregate cuam tshuam tag nrho qhov pore loj thiab lub zog ntawm cov khoom. Gencel et al.. pom tias RCA nce qhov pore loj thiab txo cov compressive zog ntawm foamed pob zeb. Pasupathy et al. pom tias RCA txo lub zog ntawm foamed pob zeb, tej zaum vim cov aggregate particles tsis muaj zog tshaj xuab zeb.
Ntxiv silica fume rau hauv lub pob zeb ua npuas ncauj ua rau kom qhuav ntom ntom thiab compressive zog, zoo li thermal conductivity. Ntxiv rau, Nws tau tshaj tawm tias granulated blast furnace slag yog qhov tseem ceeb rau kev txo cov dej kub thiab kub kev loj hlob hauv cov pob zeb ua npuas ncauj..