Research Article
Utilization of Palm Oil Fuel Ash as Binder in Lightweight Oil Palm Shell Geopolymer Concrete
Table 5
Development of compressive strength.
| | Mixture | Compressive strength (MPa) | 28-day oven-dry density (kg/m3) | | 3-day | 7-day | 14-day | 28-day |
| | M1 | 25.2 | 25.8 | 26.4 | 28.1 | 1952.8 | | M2 | 26.0 | 27.1 | 27.5 | 28.4 | 1861.1 | | M3 | 22.4 | 25.7 | 25.8 | 30.1 | 1959.0 | | M4 | 9.7 | 12.7 | 14.0 | 16.4 | 1996.1 | | M5 | 8.4 | 8.8 | 9.2 | 10.0 | 2118.1 | | M2-A | 5.1 | 16.6 | 21.6 | 25.8 | 1941.2 | | M1-2 | 15.7 | 16.5 | 16.8 | 17.3 | 1947.7 | | M2-2 | 5.5 | 10.1 | 13.1 | 16.4 | 1971.2 | | M3-2 | 4.3 | 8.3 | 12.3 | 14.6 | 1997.3 | | M4-2 | 7.8 | 8.7 | 9.2 | 9.7 | 1996.8 | | M5-2 | 5.6 | 8.1 | 8.2 | 8.6 | 2151.7 |
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