Building Materials - Engineering

Q1:

Pick up the correct statement from the following:

A The free quartz suddenly expands at a temperature lower than 600°C

B The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2

C The sand stone with silicates resist a fire in a better way

D The argillaceous stone though poor in strength can resist fire quite weak

E All the above.

ANS:E - All the above.

According to textbook of Engineering geology by Kesavulu (para 17.3.6. Frost and fire resistance), all the statements are correct.