Sulphoaluminate cement

Sulphoaluminate cement (SAC) yog ib hom cement uas tau txais koob meej vim nws cov khoom tshwj xeeb thiab zoo dua lwm hom cement. SAC yog ib qho hydraulic cement uas yog tsim los ntawm kev sib txuas ntawm sulphoaluminate clinker, gypsum, thiab ib qho me me ntawm calcium sulfate. Hauv tsab xov xwm no, peb yuav tshawb txog keeb kwm, yam ntxwv, qhov zoo, thiab kev siv cov sulphoaluminate cement.

Keeb kwm Sulphoaluminate cement yog thawj zaug tsim nyob rau hauv Suav teb xyoo 1970s. Nws yog thawj zaug siv rau kev siv tshwj xeeb, xws li kev teeb tsa ceev ceev thiab kho mortar. Nyob rau hauv xyoo tas los no, SAC tau txais koob meej raws li kev hloov pauv mus rau Portland cement.

Cov yam ntxwv Sulphoaluminate cement muaj ntau yam tshwj xeeb uas ua rau nws txawv ntawm lwm hom cement. Cov yam ntxwv no muaj xws li:

1. Kev teeb tsa nrawm: SAC teeb tsa sai, nrog lub sijhawm teeb tsa ntawm thaj tsam 15-20 feeb. Qhov no ua rau nws zoo tagnrho rau cov ntawv thov uas yuav tsum tau teeb tsa sai, xws li hauv huab cua txias lossis thaum tsim nyog kho sai.
2. Lub zog thaum ntxov: SAC muaj lub zog thaum ntxov, nrog lub zog compressive ntawm ib ncig ntawm 30-40 MPa tom qab ib hnub ntawm kev kho. Qhov no ua rau nws zoo tagnrho rau cov ntawv thov uas yuav tsum tau muaj zog thaum ntxov, xws li hauv precast pob zeb lossis rau kev kho.
3. Tsawg cov pa roj carbon hneev taw: SAC muaj cov pa roj carbon tsawg dua li cov tsoos Portland cement, vim nws yuav tsum tau kub qis dua thaum tsim khoom thiab muaj cov clinker tsawg dua.
4. High sulfate tsis kam: SAC muaj kev tiv thaiv siab rau sulfate nres, uas ua rau nws haum rau siv nyob rau hauv ib puag ncig uas muaj sulfate siab, xws li cov ntug hiav txwv dej.

Qhov zoo ntawm Sulphoaluminate cement muaj ntau qhov zoo dua li lwm hom cement, suav nrog:

1. Txo cov pa roj carbon hneev taw: SAC muaj cov pa roj carbon tsawg dua li cov tsoos Portland cement, uas ua rau nws muaj kev xaiv zoo dua rau kev tsim kho.
2. Kev teeb tsa nrawm: SAC teeb tsa sai, uas tuaj yeem txuag lub sijhawm thiab txo nqi kev tsim kho.
3. Lub zog thaum ntxov: SAC muaj lub zog thaum ntxov, uas tuaj yeem txo lub sijhawm xav tau rau kev kho thiab ua kom cov khoom tsim tau.
4. High sulfate tsis kam: SAC muaj kev tiv thaiv siab rau sulfate nres, uas tuaj yeem ua rau kom muaj zog ntawm cov pob zeb ua vaj tse nyob rau hauv ib puag ncig hnyav.

Kev Siv Sulphoaluminate cement yog siv ntau yam kev siv, suav nrog:

1. Kev teeb tsa nrawm nrawm: SAC feem ntau siv rau hauv cov ntawv thov uas yuav tsum tau teeb tsa sai, xws li huab cua txias lossis kho sai.
2. Precast pob zeb: SAC feem ntau yog siv rau hauv kev tsim cov khoom ua vaj tsev precast, xws li cov kav dej ua vaj tse, slabs, thiab panels.
3. Kho mortar: SAC feem ntau yog siv los kho cov mortar rau cov pob zeb ua vaj tse, raws li nws teeb tsa sai thiab muaj zog thaum ntxov.
4. Self-leveling qhob: SAC tuaj yeem siv los tsim tus kheej-leveling pob zeb, uas yog qhov zoo tagnrho rau cov ntawv thov uas yuav tsum muaj qhov sib luag, theem saum npoo.

Xaus Sulphoaluminate MAAs yog ib hom cement tshwj xeeb uas muaj ntau yam zoo dua li Portland cement. Nws muaj qis dua cov pa roj carbon hneev taw, teeb tsa sai, muaj lub zog thaum ntxov, thiab muaj zog tiv taus sulfate nres. SAC yog siv rau ntau yam kev siv, suav nrog kev teeb tsa ceev ceev, pob zeb ua ntej, kho cov mortar, thiab tus kheej-leveling pob zeb. Raws li kev ruaj ntseg dhau los ua ib qho tseem ceeb hauv kev tsim kho, kev siv SAC yuav ua rau muaj koob meej.