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
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