Table 3 Fresh and hardened properties of test results
From: Efficiency of rice husk ash and fly ash as reactivity materials in sustainable concrete
Group | Mix No. | Slump (mm) | Air content (%) | Compressive strength (MPa) | Splitting tensile strength (MPa) | Flexural strength (MPa) | Bond strength (MPa) | Modulus of elasticity (GPa) | Water permeability × 10−10 (cm s−1) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
3 d | 7 d | 28 d | 60 d | 90 d | 28 d | 28 d | 28 d | 28 d | 28 d | ||||
I | M1 | 85 | 2.3 | 12.4 | 23.3 | 31.1 | 32.9 | 34.5 | 3.1 | 4.5 | 5.0 | 22.4 | 8.5 |
M2 | 75 | 1.9 | 15.2 | 28.2 | 37.5 | 39.8 | 41.7 | 3.7 | 5.5 | 6.0 | 27.0 | 5.6 | |
M3 | 70 | 1.7 | 14.4 | 26.9 | 35.7 | 37.9 | 39.7 | 3.5 | 5.2 | 5.7 | 25.7 | 5.3 | |
M4 | 65 | 1.6 | 12.9 | 24.2 | 32.1 | 34.2 | 35.8 | 3.2 | 4.7 | 5.2 | 23.1 | 4.8 | |
M5 | 80 | 2.0 | 14.1 | 26.2 | 34.9 | 37.3 | 39.1 | 3.4 | 5.0 | 5.6 | 25.1 | 5.9 | |
M6 | 75 | 1.9 | 14.6 | 27.2 | 36.1 | 38.8 | 40.5 | 3.5 | 5.3 | 5.8 | 26.0 | 5.5 | |
M7 | 70 | 1.8 | 12.8 | 23.9 | 31.7 | 33.9 | 35.5 | 3.1 | 4.6 | 5.1 | 22.8 | 5.1 | |
II | M8 | 90 | 1.9 | 37.1 | 55.2 | 73.5 | 78.6 | 82.3 | 6.7 | 10.8 | 12.2 | 41.0 | 5.2 |
M9 | 100 | 1.5 | 46.3 | 67.5 | 89.3 | 95.7 | 100.1 | 8.1 | 13.1 | 14.8 | 45.3 | 3.9 | |
M10 | 110 | 1.3 | 45.3 | 66.0 | 87.1 | 93.4 | 97.6 | 7.9 | 12.9 | 14.5 | 44.1 | 3.8 | |
M11 | 115 | 1.2 | 41.1 | 59.8 | 78.9 | 84.6 | 88.5 | 7.2 | 11.6 | 13.1 | 42.3 | 3.6 | |
M12 | 110 | 1.6 | 45.1 | 65.6 | 86.8 | 93.8 | 98.1 | 7.7 | 12.8 | 14.4 | 43.9 | 4.2 | |
M13 | 115 | 1.5 | 45.6 | 66.5 | 87.9 | 95.1 | 99.4 | 8.0 | 13.0 | 14.6 | 44.7 | 4.0 | |
M14 | 120 | 1.4 | 40.5 | 58.9 | 77.9 | 84.3 | 88.1 | 7.1 | 11.5 | 13.0 | 42.1 | 3.8 | |
III | M15 | 95 | 1.7 | 43.0 | 61.1 | 80.8 | 87.2 | 91.2 | 6.9 | 11.9 | 13.7 | 42.4 | 4.2 |
M16 | 115 | 1.4 | 52.1 | 72.7 | 94.7 | 102.4 | 107.0 | 7.9 | 14.1 | 16.1 | 46.5 | 3.0 | |
M17 | 120 | 1.2 | 50.8 | 70.6 | 92.2 | 99.6 | 104.2 | 7.7 | 13.7 | 15.7 | 45.8 | 2.8 | |
M18 | 130 | 1.1 | 48.1 | 66.8 | 87.2 | 94.3 | 98.6 | 7.3 | 13.0 | 14.8 | 44.5 | 2.7 | |
M19 | 120 | 1.5 | 49.9 | 69.4 | 90.8 | 98.9 | 103.5 | 7.6 | 13.5 | 15.4 | 45.4 | 3.4 | |
M20 | 125 | 1.3 | 51.1 | 70.8 | 92.9 | 101.3 | 105.9 | 7.8 | 13.8 | 15.8 | 46.1 | 3.1 | |
M21 | 135 | 1.2 | 47.7 | 66.1 | 86.7 | 93.7 | 98.9 | 7.2 | 12.9 | 14.7 | 43.9 | 3.0 | |