The sieve number used in the fineness modules test of cement is

The operation of removing humps and hollows of uniform concrete surface, is known as

Concrete can take tension up to

Concrete is unsuitable for compaction by a vibrator if it is

For compacting plain concrete or one-way reinforced concrete floors, the vibrator used is

For concreting tunnel linings, transportation of concrete is done by

The maximum quantity of aggregate per 50 kg of cement should not exceed

The maximum percentage of chemical ingredient of cement is that of