Limestone cement yog dab tsi?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17

Ua Portland cement - feem ntau hom ntawm cement - hmoov limestone yog rhuab nyob rau hauv ib tug rotary kiln. Raws li lub hauv paus ntawm calcium, nws koom nrog hmoov av nplaum los tsim ib yam khoom hu ua clinker, uas yog tom qab ntawd hauv av nrog ib qhov chaw ntawm sulfate, zoo li gypsum. Nws yog tov nrog dej, xuab zeb thiab crushed pob zeb los tsim pob zeb.

Tsis tas li ntawd, vim li cas limestone siv hauv cement?

Cov limestone ua raws li cov noob siv lead ua rau lub cement , zoo dua faib cov tshuaj tiv thaiv cov khoom thiab ua kom cov reactivity ntawm cov cement . Raws li ib txwm muaj unhydrated cement hauv pob zeb , qhov kev hloov pauv no yuav tsis muaj qhov ntsuas tau tiag tiag ntawm qhov siv ntawm ya tshauv.

Ib yam li ntawd, pes tsawg feem pua ntawm limestone siv rau cement? Limestone yog hom calcium carbonate ntau tshaj plaws uas yog siv feem ntau rau kev tsim khoom cement . Cements nyob rau hauv ntau hom yog tsim los ntawm calcining ib tug sib tov ntawm txog 75% limestone thiab 25% av nplaum los tsim cov calcium silicate clinker uas yog tom qab ntawd hauv av thiab tov nrog me me ntawm gypsum [5].

Kuj tseem paub, Portland limestone cement yog dab tsi?

Portland limestone cement yog ib qho kev kawm cement engineered rau cov kev xav tau niaj hnub no. Kev siv ntawm portland limestone cement hauv manufacturing qhob txo CO₂ emissions los ntawm 10% thaum tseem ua pob zeb nrog tib theem ntawm lub zog thiab durability raws li cov pob zeb ua nrog tsis tu ncua portland cement.

Cov cement tuaj yeem ua yam tsis muaj limestone?

Yog cement tau ua ua tsis muaj limestone , theoretically, uas yuav tshem tawm ntau qhov kev lag luam CO2 emissions. Qhov ntawd yog Solidia thawj thawj koom ruam. Nws qhov kev twv txiaj thib ob: Thaum ntawd cement yog siv rau ua pob zeb, txheej txheem yuav tiag tiag nqus carbon dioxide.