The hapd hardening Portland cement is obtained by

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• The rapid hardening Portland cement has a
• For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
• The main ingredients of Portland cement are
• The initial setting time for ordinary Portland cement as per IS specifications should not be less than
• For the manufacture of Portland cement, the proportions of raw materials used, are
• As per IS specifications, the maximum final setting time for ordinary Portland cement should be
• According to IS specifications, the compressive strength of ordinary Portland cement after three days should not be less than
• Addition of pozzolana to ordinary Portland cement increases
• The normal consistency of ordinary Portland cement is about
• Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as