Feem ntau, tib neeg yuav nyob rau hauv kev sib tov thiab ua ntej sib xyaw hauv cov pob zeb txhawm rau txhim kho kev ua tau zoo ntawm cov pob zeb ntawm cov khoom suav sau ua admixtures.
Qhov ua tau zoo ntawm cov polycarboxylate superplasticizer hauv kev ua vaj tse yuav tsum tsis pub ntau tshaj 5% ntawm cov pawg cement feem ntau.
Tus neeg sawv cev rov qab los, tus neeg sawv cev ua haujlwm sai thiab lub zog thaum sawv ntxov tuaj yeem hloov kho lub zog thiab lub sijhawm teem ntawm pob zeb.
Lub luag haujlwm tseem ceeb ntawm cov khoom siv admixtures xws li huab cua entraining tus neeg sawv cev, dej txo tus neeg sawv cev thiab tus neeg sawv cev twj tso kua mis yog txhawm rau txhim kho lub rheological ntawm cov pob zeb sib xyaw ua ke thiab ua kom yooj yim kom tau tso rau ntawm qhov chaw tsim.
Cov khoom lag luam zoo xws li cov tshuaj pleev cov tshuaj tiv thaiv dej, tus neeg sawv cev huab cua thiab cov xeb hauv qhov dej yog siv los txhim kho lub pob zeb kom ruaj khov.
Txhawm rau txhawm rau txhim kho lwm yam khoom ntawm cov pob zeb ua, nws yog ib qho tsim nyog yuav tsum tau ntxiv cov xaj nyaum xws li cov xim ua kom zoo nkauj, tus neeg sawv cev aerating, cov tshuaj tua kab mob tus neeg sawv cev thiab cov neeg sawv cev nthuav dav mus ua vaj tse.
