Question

The coefficient of thermal expansion of concrete is nearly equal to-
1. Wood
2. Steel
3. Aluminium
4. Copper

Answer 1

Correct Answer - Option 2 : Steel

Explanation:

As per Indian standard:

1. Thermal coefficient of expansion of concrete is taken to be 10 × 10-6 °C

2. Thermal coefficient of expansion of steel is taken to be 12 × 10- 6 °C.

3. Thermal coefficient of expansion of copper is taken to be 16.7 × 10^-6 °C

4. Thermal coefficient of expansion of aluminium is taken to be 23 × 10-6 °C

So from the above result thermal coefficient of expansion of concrete is almost equal to steel.