A ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. sieve No. 9, more than

Proper batching ensures

An aggregate is said to be flaky, if its least dimension is less than

For preparing ordinary concrete, the quantity of water used, is

The types of aggregates not suitable for high strength concrete and for pavements subjected to tension, is

An aggregate having all the pores filled with water but having dry surface is called

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

Shrinkage in concrete can be reduced by using