Hauv kev tsim cov khoom sib xyaw, cov dej cement piv yuav tsum tau txo kom deb li deb tau kom txo tau cov cement thiab txuag nqi. Txhawm rau kom ua tiav qhov kev poob qis, cov dej reducer tuaj yeem ntxiv.
Xuab zeb tus nqi: xuab zeb tus nqi loj dhau, yuav ua rau txo qis ntawm cov pob zeb fluidity, slump; Yog tias cov xuab zeb me me dhau lawm, kev sib koom ua ke thiab dej tuav ntawm cov pob zeb yuav deteriorate, thiab nws yog ib qho yooj yim los tsim dej to, cais thiab slurry ntws. Nyob rau hauv lub mix tsim yuav tsum xaiv ib tug muaj peev xwm sau lub pob zeb sib txawv thiab muaj ib tug tej yam npaum li cas ntawm cov xuab zeb seem.
Aggregates: kev xaiv ntawm kev sib sau ua ke muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm pob zeb. Nyob rau hauv cov xwm txheej uas tus nqi tag nrho tsis hloov pauv, kev ua haujlwm ntawm cov pob zeb sib xyaw nrog pebbles thiab dej xuab zeb yog qhov zoo dua, thaum ua haujlwm ntawm cov pob zeb sib xyaw nrog pob zeb thiab tshuab ua xuab zeb yog qhov tsis zoo. Yog hais tias lub fineness modulus ntawm aggregate loj heev los yog me me, lub fluidity ntawm pob zeb sib tov yuav ua phem. Nyob rau hauv kev sib xyaw qauv tsim, yog tias qhov kev ua kom zoo nkauj loj thiab cov dej ntws tsis zoo, cov xuab zeb tuaj yeem tsim nyog los yog cov cement tuaj yeem nce ntxiv los txhim kho kev ua haujlwm. Yog hais tias lub fineness modulus tsawg dhau, cov xuab zeb tuaj yeem txo qis thiab kev siv dej tuaj yeem nce ntxiv.
Admixture: admixture ya tshauv, ntxhia hmoov thiab lwm yam tuaj yeem hloov tau ib feem ntawm cov cement, ntawm ib sab tuaj yeem txo cov cement, txo tus nqi, ntawm qhov tod tes tuaj yeem txhim kho kev ua haujlwm ntawm pob zeb. Rau qhov loj ntim pob zeb, kub kub tsim ua vaj tse, tuaj yeem sib xyaw cov hmoov tshauv, ntxhia hmoov thiab lwm yam khoom siv, kho qhov ua haujlwm ntawm pob zeb.
Admixture: admixture tuaj yeem txhim kho kev ua haujlwm ntawm cov pob zeb, xws li dej txo tus neeg saib xyuas tsis tuaj yeem txo cov dej sib xyaw hauv qhov chaw, txhim kho qhov sib tov fluidity, ntxiv dej txo tus neeg sawv cev, pob zeb fluidity ntau dua; Cov twj tso kua mis tuaj yeem siv los txhim kho kev ua haujlwm ntawm cov pob zeb.
