Research Article
Flexural Toughness Properties of Reinforced Steel Fibre Incorporated Alkali Activated Slag Concrete
Table 4
Compressive strength of steel fibre reinforced geopolymer concrete cured in steam chamber (at 75°C).
| | Mix | GGBS (kg/m3) |
Fine aggregate (kg/m3) |
Coarse aggregate (kg/m3) |
w/b |
Water (lit/m3) | Sodium hydroxide (kg/m3) |
Steel fibre (kg/m3) | Compressive | Split tensile | Elastic modulus | | strength (MPa) | strength (MPa) | (GPa) | | 3rd day | 28th day | 3rd day | 28th day | 3rd day | 28th day |
| | GC5 | 19.8% | 28.4% | 45.8% | 0.3 | 142.56 | 68.43 | 0 | 40.8 | 56.6 | 3.64 | 3.78 | 21.3 | 23.6 | | GSF1 | 19.8% | 28.4% | 45.8% | 0.3 | 142.56 | 68.43 | 12 | 47.1 | 57.8 | 3.86 | 4.25 | 24.8 | 28.4 | | GSF2 | 19.8% | 28.4% | 45.8% | 0.3 | 142.56 | 68.43 | 24 | 53.6 | 60.3 | 4.94 | 5.43 | 31.3 | 34.2 | | GSF3 | 19.8% | 28.4% | 45.8% | 0.3 | 142.56 | 68.43 | 36 | 51.8 | 52.4 | 6.2 | 6.51 | 28.6 | 30.2 |
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