In order to have segregation in concrete, its dropping height should be less than

The construction joints are generally provided in concrete

For finding compressive strength of concrete, the minimum number of cubes required is

Transport of concrete by pumps, is done for a distance of

The object of compaction is

The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be

In the manufacture of pozzolana cement, the amount of pozzolana material added to ordinary Portland cement clinkers is a…

For the construction of cement concerted dams, the maximum permissible size of the aggregates, is