Research Article
Effects of Nano-TiO2 on the Toughness and Durability of Cement-Based Material
Table 5
Water absorption coefficient of hardened mortars and concretes at 28 days.
| Samples | Water-to-cement ratio | Curing regime after surface treatment | Control | 3% NT + unsealed | 3% NT + sealed | Water absorption coefficient/standard deviation |
| Mortar | 0.58 | 50°C/95% RH/14 days 20°C/95% RH/14 days | (0.328 ± 0.010)/100% (0.372 ± 0.018)/100% | (0.156 ± 0.012)/52% (0.205 ± 0.012)/45% | (0.096 ± 0.016)/71% (0.118 ± 0.011)/68% |
| Concrete | 0.45 0.58 | 20°C/95% RH/14 days | (0.442 ± 0.014)/100% (0.640 ± 0.018)/100% | (0.249 ± 0.011)/44% (0.351 ± 0.014)/45% | (0.302 ± 0.015)/32% (0.291 ± 0.012)/55% |
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