Building Materials
Hydraulic lime is obtained by

Calcination of pure clay
Adding water to quick lime
Burning of lime stone
Burning of kankar

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Building Materials
Rapid hardening cement attains early strength due to

Larger proportion of lime grounded finer than normal cement
Lesser proportion of lime grounded finer than normal cement
Lesser proportion of lime grounded coarser than normal cement
Excess percentage of gypsum

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