Minimum required water cement ratio for a workable concrete, is

To perform the initial setting time test, the water is added to the cement at the rate of .... by weight of cement

The compaction of concrete, improves

The construction joints in cement concrete

For compacting large sections of mass concrete in structures, the type of vibrator used is:

Internal friction between the ingredients of concrete, is decreased by using

A suitable admixture added at the time of preparing the concrete mix, makes the concrete

The sum of the percentage of tricalcium silicate and dicalcium silicate for Portland cement varies from