Table 5 Effects of RHA on strength properties of concrete (free w/b = 0.40).
RHA replacement (%) | Average compressive strength (N/mm2) | Tensile strength (N/mm2) | ||||||
|---|---|---|---|---|---|---|---|---|
3 days | 7 days | 14 days | 21 days | 28 days | 90 days | 180 days | 28 days | |
0 | 29.28 | 35.35 | 41.71 | 42.78 | 47.93 | 56.14 | 57.79 | 3.553 |
5 | 35.78 | 42.85 | 45.29 | 51.21 | 52.81 | 63.19 | 65.46 | 4.097 |
10 | 33.71 | 38.20 | 44.28 | 44.24 | 49.87 | 53.44 | 55.02 | 3.669 |