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.

SamplesWater-to-cement ratioCuring regime after surface treatmentControl3% NT + unsealed3% NT + sealed
Water absorption coefficient/standard deviation

Mortar0.5850°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%

Concrete0.45
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%