Building Materials
The thermosetting plastic

Chars at 343°C
Becomes rigid when moulded at suitable pressure and temperature
All listed here
At 127°C to 177°C permanently set and further application of heat does not soften it

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Building Materials
Rapid hardening cement attains early strength due to

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

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