Separation of water or water sand cement from a freshly concrete, is known

Pick up the incorrect statement applicable to the field test of good cement.

The high strength of rapid hardening cement at early stage, is due to its

The bulk density of aggregates does not depend upon :

To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between

Efflorescence in cement is caused due to an excess of

Construction joints are generally provided in concrete

If fineness modulus of sand is 2.it is graded as

The mixture of different ingredients of cement, is burnt at

The preliminary test is repeated if the difference of compressive strength of three test specimens, exceeds

Workability of concrete is measured by

Ifkg of coarse aggregate is sieved throughmm,mm,mm,mm, 4.mm, 2.mm, 1.mm,micron,micron andmicron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

The cement becomes useless if its absorbed moisture content exceeds

The ratio of the length to breadth of a wooden float, is

Pick up the correct statement from the following:

Curing

Permissible compressive strength of Mconcrete grade is

The risk of segregation is more for

Pick up the correct proportions of chemical ingredients of cement

The rock which is not calcareous, is :

Curing a concrete for long period ensures better

While compacting the concrete by a mechanical vibrator, the slump should not exceed

The standard sand now a days used in India, is obtained from

Pick up the correct statement from the following: