Yog tias muaj qee yam tsis xws luag hauv cov cement, nws yuav ua rau cov dej tsis zoo ntawm cov pob zeb sib xyaw ua ke, kev poob sai sai, lossis kev coagulation tsis zoo, uas tiv thaiv kev tsim kho, thiab txawm tias lub zog lig ntawm cov pob zeb ua tsis tau raws li cov qauv tsim, thiab cov qauv pob zeb. tawg. Tau kawg, qhov tshwm sim saum toj no tsis tuaj yeem suav tag nrho rau cov cement, tab sis qhov tseem ceeb ntawm cov cement zoo yog txaus nyiam cov xim ntawm txhua lub tuam txhab ua vaj tse. Cov tuam txhab ua vaj tse feem ntau siv PO cement. Txhawm rau ntsuas qhov kev ua tau zoo ntawm cov cement, yuav tsum tau them nyiaj rau qhov cuam tshuam ntawm cov kev ntsuas ntawm cov cement ntawm ntau yam khoom ntawm cov pob zeb, xws li dej siv, lub zog thiab kev ruaj ntseg ntawm nws txoj cai kev loj hlob. Cov cement uas npaj sib xyaw ua vaj tse xws li:
(1) Lub zog 3d ntawm cov cement yog tsim nyog (txog 26MPa), 28d lub zog nce ntxiv thiab lub zog ruaj khov.
(2) Cov cement fineness yog tsim nyog thiab cov dej xav tau tsawg.
(3) Kev hloov pauv tau zoo rau cov khoom sib xyaw ua ke thiab kev ua haujlwm ruaj khov zoo heev.
(4) Cov ntsiab lus ntawm txhua cov ntxhia hauv cov cement yog qhov tsim nyog, tshwj xeeb tshaj yog cov ntsiab lus ntawm C3A yuav tsum tsis txhob siab dhau, nyiam dua tsis ntau tshaj 8%, qhov ruaj khov ntawm txhua qhov yog qhov zoo, thiab qhov hloov pauv me me.
