Building Materials
Fibre glass

All listed here
Has a higher strength to weight ratio
Retains heat-longer
Is shock proof and fire retardant

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Building Materials
Rapid hardening cement attains early strength due to

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

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