Aluminate cement, tseem hu ua high-alumina cement (HAC), yog hom hydraulic cement uas yog tsim los ntawm bauxite thiab limestone. Nws tau pom thawj zaug hauv Fabkis xyoo 1900s thiab tam sim no tau siv dav hauv kev tsim kho vim nws cov khoom tshwj xeeb thiab zoo dua lwm hom cement. Hauv tsab xov xwm no, peb yuav tshawb txog keeb kwm, yam ntxwv, qhov zoo, thiab kev siv ntawm aluminate cement.

Keeb kwm Aluminate cement tau pom thawj zaug hauv Fabkis thaum xyoo 1900s los ntawm tus kws ua haujlwm Fab Kis hu ua Jules Bied. Nws pom tias los ntawm cua sov sib xyaw ntawm bauxite thiab limestone ntawm qhov kub thiab txias, cov khoom siv cementitious tau tsim uas muaj zog thiab ua haujlwm ntev. Cov khoom no tau pib hu ua "ciment fondu" lossis "melted cement" hauv Fabkis, thiab tom qab ntawd nws tau patented li high-alumina cement.

Cov yam ntxwv Aluminate 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: Aluminate cement teeb sai sai, nrog lub sijhawm teem sijhawm ntawm 4-5 teev. 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: Aluminate cement muaj lub zog thaum ntxov, nrog lub zog compressive ntawm ib ncig ntawm 50-70 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. Kev kub siab ntawm hydration: Aluminate cement ua kom muaj cua sov ntau thaum lub sij hawm hydration, uas tuaj yeem ua tau zoo thiab qhov tsis zoo. Qhov kub kub ntawm hydration no ua rau nws zoo tagnrho rau siv nyob rau hauv huab cua txias, raws li nws yuav pab tau kom ceev cov txheej txheem kho. Txawm li cas los xij, nws tuaj yeem ua rau tawg thiab lwm yam kev puas tsuaj yog tias tsis tswj xyuas kom zoo.
4. Tsawg carbon hneev taw: Aluminate MAAs muaj cov pa roj carbon tsawg dua li Portland cement, vim nws yuav tsum tau kub qis dua thaum tsim khoom thiab muaj tsawg dua clinker.

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

1. Kev teeb tsa nrawm: Aluminate cement teeb sai sai, uas tuaj yeem txuag sijhawm thiab txo nqi kev tsim kho.
2. Lub zog thaum ntxov: Aluminate cement muaj lub zog thaum ntxov, uas tuaj yeem txo lub sijhawm xav tau rau kev kho thiab ua kom cov khoom tsim tau.
3. High sulfate tsis kam: Aluminate cement 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.
4. Tsawg shrinkage: Aluminate cement muaj qhov qis qis dua li cov tsoos Portland cement, uas tuaj yeem txo qhov kev pheej hmoo ntawm kev tawg thiab lwm yam kev puas tsuaj.

Siv Aluminate cement yog siv ntau yam kev siv, suav nrog:

1. Kev teeb tsa nrawm nrawm: Aluminate cement 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: Aluminate cement 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. Refractory cement: Aluminate cement feem ntau yog siv rau hauv kev tsim cov cement refractory, uas yog siv los ua kab kub kub, kilns, thiab lwm yam khoom siv.
4. Cov ntawv thov tshwj xeeb: Aluminate cement kuj tseem siv rau hauv cov ntawv tshwj xeeb, xws li hauv kev tsim cov pob zeb ntawm tus kheej thiab ua cov ntawv khi rau qee yam khoom siv kho hniav.

Xaus Aluminate MAAs yog hom tshwj xeeb ntawm cov cement 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. Aluminate cement yog siv rau ntau yam kev siv, suav nrog kev teeb tsa ceev ceev, pob zeb ua ntej, cov cement refractory, thiab cov ntawv tshwj xeeb xws li cov ntaub ntawv kho hniav. Thaum aluminate cement muaj ntau qhov zoo, nws tseem ceeb heev uas yuav tsum nco ntsoov tias nws kuj muaj qee qhov tsis zoo uas yuav tsum tau xav txog. Kev kub siab ntawm hydration tuaj yeem ua rau tawg thiab lwm yam kev puas tsuaj yog tias tsis tswj xyuas kom zoo, thiab nws tseem tuaj yeem kim dua li cov tsoos Portland cement. Txawm li cas los xij, cov txiaj ntsig ntawm kev siv aluminate cement feem ntau tshaj cov nqi, tshwj xeeb hauv cov ntawv tshwj xeeb uas nws cov khoom tshwj xeeb tsim nyog.