Effect Of Water-Cement Ratio On Performance Of Seaweed-Modified Mortars
Table 6:
W/C ratio | 28 days in normal climate (N/mm2) | 21 days in normal climate, 7 days in water (N/mm2) | 90 days normal climate* (N/mm2) | 28 days at normal climate* (N/mm2) | |
Cement 21% | 0.48 | 1.33±0.05 | 0.83±0.02 | 1.41±0.07 | 1.89±0.16 |
0.52 | 1.35±0.05 | 0.94±0.16 | 1.4±0.06 | 1.67±0.16 | |
0.56 | 1.37±0.6 | 1.05±0.02 | 1.37±0.05 | 1.7±0.16 | |
0.6 | 1.35±0.5 | 0.96±0.16 | 1.37±0.05 | 1.75±0.06 | |
Cement 24% | 0.41 | 1.38±0.1 | 0.97±0.5 | 1.64±0.06 | 1.79±0.16 |
0.45 | 1.52±0.09 | 0.97±0.16 | 1.58±0.06 | 1.95±0.06 | |
0.49 | 1.44±0.09 | 0.96±0.16 | 1.43±0.06 | 1.73±0.06 | |
0.52 | 1.46±0.05 | 1.1±0.05 | 1.46±0.07 | 1.75±0.16 | |
Cement 27% | 0.37 | 1.53±0.05 | 1.38±0.16 | 1.71±0.06 | 1.77±0.16 |
0.4 | 1.61±0.15 | 1.07±0.16 | 1.72±0.06 | 1.66±0.06 | |
0.43 | 1.55±0.08 | 0.93±0.09 | 1.68±0.05 | 1.65±0.16 | |
0.46 | 1.58±0.5 | 0.87±0.09 | 1.58±0.06 | 1.68±0.06 | |
Cement 30% | 0.33 | 1.74±0.35 | 1.48±0.5 | 2.1±0.05 | 1.72±0.16 |
0.36 | 1.73±0.16 | 1.44±0.02 | 1.92±0.05 | 1.82±0.16 | |
0.38 | 1.53±0.16 | 1.14±0.16 | 1.73±0.06 | 1.58±0.06 | |
0.41 | 1.59±.15 | 1.05±0.16 | 1.69±0.06 | 2.14±0.16 | |
Without Seaweed powder (GracilariaSp.) cement 21% | 0.48 | 0.51±0.05 | 0.31±0.19 | 0.38±0.1 | Destroyed |