Cement los ntawm ntau qhov sib txawv tab sis feem ntau ntawm cov cement yog grey thiab raug xa mus rau portland cement. Rau txhua tus qauv sau ntawv uas tshwm sim los nyeem qhov no koj yuav pom lo lus "portland" tsis yog tus lej. … Portland yog ib qho adjective uas hloov lo lus cement, tsis yog lub nroog.
Koj siv portland cement li cas?
Yuav Siv Portland Cement
- Sib tov Portland cement nrog dej thiab sib sau ua ke (feem ntau gravel thiab xuab zeb) los ua pob zeb. …
- Sib tov Portland cement nrog xuab zeb thiab dej los ua mortar. …
- Siv txog li 70 feem pua ntawm qhov cub slag los ua blastfurnace cement. …
- Siv txog li 30 feem pua ntawm ya tshauv los ua flyash cement.
Qhov txawv ntawm cov cement thiab portland cement yog dab tsi?
Txawm hais tias cov ntsiab lus cement thiab pob zeb feem ntau siv sib hloov, cov cement yog cov khoom xyaw ntawm pob zeb. … Portland cement tsis yog lub npe nrov, tab sis lub ntsiab lus dav dav rau hom cement siv nyob rau hauv txhua yam pob zeb, ib yam li stainless yog hom hlau thiab sterling ib hom nyiaj.
Vim li cas peb hais portland cement?
Nws lub npe yog muab los ntawm nws qhov zoo sib xws rau Portland pob zeb, ib hom tsev pob zeb quarried ntawm Isle of Portland hauv Dorset, England. … Hauv nws xyoo 1824 cement patent, Joseph Aspdin tau hu nws qhov kev tsim khoom "portland cement" vim nws zoo ib yam li Portland pob zeb.
Qhov txawv ntawm pozzolan yog dab tsithiab portland cement?
Unlike Ordinary Portland Cement, Portland Pozzolana cement (PPC) yog tsim los ntawm kev sib txuas ntawm cov ntaub ntawv pozzolanic. Pozzolana yog cov khoom siv dag zog lossis cov khoom siv ntuj tsim uas muaj silica hauv nws hauv daim ntawv reactive. Nrog rau cov ntaub ntawv pozzolanic nyob rau hauv ib qho kev faib ua feem, PPC kuj muaj OPC clinker thiab gypsum.
