Question

Generally, the ratio of tensile strength to the compressive strength of concrete is

1. 0.025
2. 0.040
3. 0.100
4. 0.400

Answer 1

Correct Answer - Option 3 : 0.100

Explanation:

​Concrete is brittle in tension but relatively tough in compression. Tensile strength is almost 1/10th of compressive strength or

Tensile strength of concrete = 10 to 15% of compressive strength. 

As per IS:456 - 2000, section - 6.2.2, 

The tensile strength of concrete is 0.7 times the square root of the characteristic compressive strength of the concrete cube.

For example, M20 grade concrete has a compressive strength of 20 N/mm2 and it's tensile strength is 2 - 3 N/mm2.