As per IS 10262:2019, the volume of the coarse aggregate per unit volume of the total aggregate for water to cementitious materials ratio of 0.50 ranges from _____ ‘when the nominal size of the coarse aggregate is 20 mm.
1
0.66 to 0.72
2
0.6 to 0.66
3
0.69 to 0.73
4
0.48 to 0.54