Hnub Kawg:23, Peb,2025

Kauj Ruam 1: kuaj cov alkalinity ntawm cov cement

Ntsuas tus nqi pH ntawm cov cement, thiab siv pH, pH meter lossis pH cwj mem los kuaj. Cov txiaj ntsig kev xeem tuaj yeem siv los txiav txim siab ua ntej: seb tus nqi ntawm cov alkali soluble hauv cov cement loj lossis me; seb cov khoom sib xyaw hauv cov cement yog acidic lossis inert cov khoom xws li cov hmoov pob zeb, uas ua rau pH tus nqi qis.

Kauj Ruam 2: Tshawb nrhiav

Thawj feem ntawm kev tshawb xyuas yog kom tau txais cov txiaj ntsig kev soj ntsuam clinker ntawm cov cement. Xam cov ntsiab lus ntawm plaub cov khoom siv hauv cov cement: tricalcium aluminate C3A, tetracalcium aluminoferrite C4AF, tricalcium silicate C3S thiab dicalcium silicate C2S.

Qhov thib ob ntawm qhov kev tshawb xyuas yog kom nkag siab tias hom kev sib xyaw ntxiv yog dab tsi ntxiv thaum lub clinker yog hauv av rau hauv cov cement thiab ntau npaum li cas ntxiv, uas yog ib qho txiaj ntsig zoo rau kev txheeb xyuas qhov ua rau cov pob zeb los ntshav thiab lub sijhawm teeb tsa tsis zoo (ntev dhau, luv dhau).

Qhov thib peb ntawm kev tshawb nrhiav yog kom nkag siab txog ntau yam thiab fineness ntawm pob zeb admixtures.

Kauj Ruam 3: Nrhiav tus nqi ntau npaum li cas

Nrhiav kom paub tus nqi ntau npaum li cas ntawm cov dej ua haujlwm siab uas siv rau cov cement no. Yog tias ob lossis ntau dua cov dej ua kom muaj txiaj ntsig zoo sib xyaw ua ke, nrhiav cov ntsiab lus saturated dosage los ntawm cov cement paste test raws li tag nrho cov khoom sib xyaw. Qhov ze ntawm qhov ntau npaum li cas ntawm cov dej ua kom muaj txiaj ntsig zoo yog rau cov khoom noj saturated ntawm cov cement, nws yooj yim dua kom tau txais kev hloov pauv tau zoo dua.

Kauj Ruam 4: Kho cov qib plasticization ntawm lub clinker rau qhov tsim nyog

Kho qhov degree ntawm alkali sulfation nyob rau hauv cov cement, uas yog, plasticization degree ntawm clinker rau qhov tsim nyog. Cov mis laij lej rau SD tus nqi ntawm cov qib plasticization ntawm clinker yog: SD = SO3 / (1.292Na2O + 0.85K2O) Cov ntsiab lus tseem ceeb ntawm txhua qhov khoom tau teev tseg hauv kev tshuaj xyuas clinker. SD tus nqi ntau yog 40% txog 200%. Yog tias nws qis dhau, nws txhais tau tias muaj sulfur trioxide tsawg dua. Ib qho me me ntawm sulfur-muaj ntsev xws li sodium sulfate yuav tsum tau ntxiv rau cov khoom sib xyaw. Yog tias nws siab dhau lawm, nws txhais tau tias cov molecule loj dua, uas yog, muaj sulfur trioxide ntau dua. Tus nqi pH ntawm cov tshuaj sib tov yuav tsum tau nce me ntsis, xws li sodium carbonate, caustic soda, thiab lwm yam.

Kauj Ruam 5: Ntsuam xyuas cov khoom sib xyaw ua ke thiab nrhiav seb hom thiab ntau npaum li cas ntawm kev teeb tsa cov neeg sawv cev

Thaum cov xuab zeb zoo tsis zoo, xws li cov av nkos siab, lossis thaum tag nrho cov xuab zeb dag thiab superfine xuab zeb siv los sib xyaw ua ke, tom qab qhov kev ntsuam xyuas slurry tau txais cov txiaj ntsig zoo, nws yog ib qho tsim nyog yuav tsum tau ua qhov kev ntsuam xyuas mortar ntxiv ntxiv rau kev hloov kho nrog cov khoom sib xyaw.

Kauj Ruam 6: Kev kuaj pob zeb Rau kev sim ua vaj tse, qhov sib tov yuav tsum tsis pub tsawg tshaj 10 litres

Txawm hais tias cov net slurry raug kho kom zoo, nws tseem yuav tsis tau raws li qhov kev cia siab hauv cov pob zeb; yog tias cov net slurry tsis kho zoo, cov pob zeb yuav muaj teeb meem ntau dua.Tom qab qhov kev sim me me tau ua tiav, qee zaum yuav tsum tau rov qab ntau dua, xws li 25 litres mus rau 45 litres, vim tias cov txiaj ntsig tseem yuav txawv me ntsis. Tsuas yog thaum qee qhov kev sim ua tiav tiav tuaj yeem ua tiav qhov kev hloov kho kom haum.

Kauj Ruam 7: Kho qhov sib tov sib xyaw ua ke

Koj tuaj yeem nce lossis txo tus nqi ntawm cov ntxhia hauv av kom tsim nyog, thiab hloov ib qho admixture rau ob chav admixture, uas yog, siv ob qhov sib txawv admixtures tib lub sijhawm. Tsis muaj qhov tsis ntseeg tias ob qhov sib xyaw ua ke zoo dua li ib qho kev sib xyaw; nce lossis txo qis ntawm cov cement tuaj yeem daws qhov tsis xws ntawm cov pob zeb ua pob zeb, kev poob sai sai thiab cov pob zeb los ntshav, tshwj xeeb tshaj yog cov xuab zeb tawg; me ntsis nce los yog txo cov dej; nce lossis txo cov xuab zeb piv, lossis txawm tias qee qhov hloov pauv hom xuab zeb, xws li kev sib xyaw ntawm cov xuab zeb ntxhib thiab nplua, cov xuab zeb ntuj thiab cov xuab zeb dag, thiab lwm yam.