The compressive strength depends on the proportions of the ingredients i e the cementwater ratio and the cement aggregate ratio Example 2 Assume a 1 3 5 cement sand stone concrete mix by volume using naturally moist aggregates and adding 62 litres of water What will the basic strength and the volume of mix The compressive strength depends on the proportions of the ingredients i e the cementwater ratio and the cement aggregate ratio Example 2 Assume a 1 3 5 cement sand stone concrete mix by volume using naturally moist aggregates and adding 62 litres of water What will the basic strength and the volume of mix