After casting, an ordinary cement concrete on drying
Pozzolana cement is used with confidence for construction of
Internal friction between the ingredients of concrete, is decreased by using
Non-uniform compaction may cause the concrete
For ensuring quality of concrete, use
The process of proper and accurate measurement of concrete ingredients for uniformity of proportion, is known
Vicat's apparatus is used for
Workability improved by adding
Pick up the correct statement from the following:
Sands of zone I are
To hydrate 500kg of cement full water needed, is
Permissible compressive strength of Mconcrete grade is
The following proportion of the ingredients of concrete mix, is not in conformation to arbitrary method of proportioning
Slump test is done for
While designing an air entrained concrete
Proper proportioning of concrete, ensures
Hydration of cement is due to chemical action of water with
Water cement ratio is
For road pavements, the cement generally used, is
Log Angles machine is used to test the aggregate for
According to I.S. :the number of grades of concrete mixes, is
Mgrade of concrete approximates
The commonly used material in the manufacture of cement is
The lower water cement ratio in concrete, introduces
Separation of water or water sand cement from a freshly concrete, is known
To obtain a very high strength concrete, use very fine grained
For preparing a test-specimen, it is necessary
The increased cohesiveness of concrete, makes it
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