Placing of concrete should preferably be done at a temperature of
For the construction of the retaining structures, the type of concrete mix to be used, is
Pick up the incorrect statement from the following:
.If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is
Wp and Wf are the weights of a cylinder containing partially compacted and fully compacted concrete. If the compaction factor `(W_p/W_f)` is 0.95, the workability of concrete is