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Portland limestone cement |
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Portland Limestone Cement is produced by milling clinker, limestone and a given
amount of gypsum. They are classified into two according to the amount of limestone
in them. Type A includes 6-20% limestone by weight and type B includes 21-35% slug
by weight. Portland Limestone Cement 28 is classified into six types according to
their early strength periods within 28 days: PLC 32.5, PLC 32.5R, PLC 42.5, PLC
42.5R, PLC 52.5, PLC 52.5R. This cement type is newly adopted from European standards.
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