concrete mix design

In the context of construction materials, which of the following statements is/are CORRECT?

In cement concrete mix design, with the increase in water-cement ratio, which one of the following statements is TRUE?

Let the characteristic strength be defined as that value, below which not more than 50% of the results are expected to fall. Assuming a standard deviation of 4 MPa, the target mean...

The composition of an air-entrained concrete is given below: Water : 184 kg /m 3 Ordinary Portland Cement(OPC) : 368 kg /m 3 Sand : 606 kg /m 3 Coarse aggregate : 1155 kg /m 3 Assu...

The target mean strength f cm for concrete mix design obtained from the characteristic strength (f ck ) and standard deviation $$\sigma$$, as defined in IS:456-2000, is