Qhov txawv yog: cov nplaim ya tshauv cib yog ua los ntawm ntau yam ya cov hmoov tshauv cov khoom siv pov tseg los ntawmya tshauv cib tshuab, thiab kev siv cov yoov tshauv kev siv cuab yeej siv tau hloov kho thiab ua tiav. Cov qhob thaiv tsev tuaj yeem suav tau tias yog qhov ntau dav. Ya tshauv yog siv los ua pob zeb ua ke Cov hmoov tshauv ya los ntxiv rau cov ntaub ntawv pabcuam, thiab qhov sib piv thiab muaj pes tsawg leeg sib txawv. Cov txheej txheem tsim khoom yuav txawv.
Cov hmoov tshauv ya zoo li cov cement, tab sis nws txawv ntawm milky dawb mus rau grey-dub vim kev sib txuam thiab cov xim. Cov xim ntawm yoov ntoo tshauv yog qhov taw qhia tseem ceeb zoo, nws tsis tuaj yeem tsuas yog qhia qhov ntau thiab tsawg ntawm cov ntsiab lus carbon. Thiab nyob rau qee qhov, nws tseem tuaj yeem hais txog qhov zoo ntawm yoov tshauv. Cov xim tsaus dua, finer cov particle loj ntawm ya tshauv thiab cov pa roj carbon siab ntau dua. Yoov tshauv raug muab faib ua cov tsis muaj calcium uas ya cov tshauv thiab cov hmoov av calcium uas ya siab tshaj. Feem ntau, cov xim ntawm high-calcium ya ya tshauv muaj daj, thiab cov xim ntawm cov calcium uas tsawg ya tshauv yog greyish.
Pob Zeb Ua, muab sau ua" qhob (tóng)" ;: hais txog cov lus sib xyaw ua ke rau engineering cov khoom sib xyaw ua ke uas cov khoom sib txuas ua ke rau hauv tag nrho los ntawm cov khoom siv cementitious. Feem ntau hais lus, lo lus pob zeb yog hais txog cov pob zeb ua kev siv pob zeb siv uas yog siv cov pob zeb ua cementing cov khoom siv thiab cov xuab zeb thiab pob zeb ua kev sib xyaw; nws yog sib xyaw nrog dej (uas tej zaum yuav muaj admixtures thiab admixtures) nyob rau hauv ib qho kev faib ua feem thiab tau muab sib xyaw nrog cov pob zeb ua kev ua vaj tse, tseem hu ua pob zeb zoo tib yam, nws yog dav siv hauv kev siv engineering.
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