The maximum bulking of sand occurs at a moisture content of

The approx. ratio of the strength of the cement conc. of 7 days to that of 28 days is

The presence of tricalcium silicate in cement

Harshness in concrete is due to the excess of

Low heat cement is used in

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

Slump test is done for

Which of the following cements is expected to have the highest compressive strength after 3 days?