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Manufacture

What is compound composition of Ordinary Portland cement ?

The typical range is given below:

COMPOUND	FORMULA	ABBREVIATION	% BY MASS IN CEMENT
Tri calcium silicate	3 CaO. SiO₂	C₃S	30-50
Di calcium silicate	2 CaO. SiO₂	C₂S	20-45
Tri calcium aluminate	3 CaO. Al₂O₃	C₃A	8-12
Tetra calcium aluminoferrite	4 CaO. Al₂O_3. Fe₂0₃	C₄AF	6-10

In addition to these four major compounds (often called Bogue’s Compounds) many minor compounds are also formed but their influence on properties of cement or hydrated compounds is not significant. Bogue’s Compounds ( i.e C₃S, C₂S, C₃A & C₄AF ) are also called as Alite, Belite, Celite & Felite respectively).

Click Here to read about properties of these compounds.

FAQs

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What are chemical compound composition limits as per ASTM?

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