Skip to main content

Table 3 Water CAs of treated stone surfaces measured in different time. The concentrations of nano Al2O3 in 101S are 1.0 mg/mL for Marble and Hedishi, 1.5 mg/mL for Qingshi, respectively

From: Nano-materials enhanced protectants for natural stone surfaces

Surface Time Treated With 101S + nano Al2O3
SCA (°) ACA (°) RCA (°) HA (°)
Marble Oct. 2020 168.9 ± 1.5 170.7 ± 0.3 156.6 ± 0.9 14.1
Jul. 2021 165.6 ± 0.8 170.0 ± 0.3 154.3 ± 2.3 15.7
Qingshi Oct. 2020 165.0 ± 1.3 169.2 ± 1.4 153.1 ± 0.5 16.1
Jul. 2021 165.4 ± 0.7 169.2 ± 1.4 148.1 ± 2.5 21.4
Hedishi Oct. 2020 165.6 ± 0.1 169.7 ± 0.7 153.0 ± 1.1 16.7
Jul. 2021 165.7 ± 0.5 170.0 ± 0.9 149.2 ± 4.8 21.0