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Chemistry, 01.12.2020 19:50 mszeew

Portland cement (J. Aspdin) contains maximum % of CaO. Cement clinker contains A) limestone & clay as raw materials

B) SiO2 to Al2O3 ratio 2.5 to 4.0 or $\frac{CaO}{SiO2 + Al2O3+ Fe2O3}$

C) gypsum, fly ash and black ash (Na2CO3 + CaS)

D) $Ca_{2}SiO_{4}-26%, Ca_{3}SiO_{5} -51%, Ca_{3}Al_{2}O_{6}-11%$

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