Thaum lub slump poob ntawm kev lag luam ua vaj tse yog ceev heev uas yuav tsum tau pumped nyob rau hauv unpredictable xwm txheej, txoj kev ntawm ntxiv tom qab siv tus neeg sawv cev yuav tau txais yuav los daws qhov teeb meem. Tom qab ntxiv cov twj tso kua mis, lub pob zeb thauj khoom yuav tsum khiav ceev ceev rau 2min, tom qab txiav txim siab qhov poob ntawm cov pob zeb ua tau raws li qhov yuav tsum tau ua, nws tuaj yeem siv tau. Cov ntsiab lus ntawm qhov sib ntxiv yuav tsum tau txiav txim siab ua ntej los ntawm kev xeem, tab sis nws tsis tuaj yeem siv ntau zaus. Yog tias cov ntsiab lus dhau qhov kev txwv, nws yuav ua rau cov pob zeb tsis tau teem rau ob peb hnub.
Qhov zoo dua cov cement particle, qhov xav tau dej ntau, qhov xav tau dej ntau dua yuav ua rau qhov poob qis ntawm cov pob zeb, kom txo qis kev poob qis, yuav tsum yog los ntawm lub twj tso kua mis tus neeg saib xyuas kev hloov pauv, txiav txim siab qhov zoo tshaj plaws tus neeg sawv cev sib xyaw.
Yuav tsum nyiam cov twj tso kua mis nrog cov khoom siv raw, cement, admixture, aggregate, tus neeg sawv cev siv yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm tus qauv zoo, thiab muaj kev nkag siab txog nws qhov zoo, kev ua tau zoo, nce qhov zaus ntawm kev tshuaj xyuas, daim ntawv thov ntawm cov chaw tsim khoom yog qhov ruaj khov. , kev sib xyaw ua ke los ntawm kev sim los txiav txim siab thiab dhau los ntawm kev ua haujlwm ntawm kev ua kom zoo dua qub thiab cov ntsiab lus, kom qhov kev pom zoo ntawm cov pob zeb sib xyaw, Cov aggregate muaj qhov zoo tshaj plaws gradation, cov ntsiab lus av nkos tsawg tshaj plaws thiab qhov poob qis tshaj plaws.
