The characteristic compressive strength of concrete required in a project is 25 MPa and the standard deviation in the observed compressive strength expected at...

In the context of provisions relating to durability of concrete, consider the following assertions: Assertion (1): As per IS 456-2000, air entrainment to the e...

Concrete of characteristic strength 30 MPa is required. If 40 specimens of concrete cubes are to be tested, the minimum number of specimens having at least 30 M...