Skip to main content

Table 4 Water CAs of treated stone surfaces measured in different time. The concentrations of nano SiO2 in 101S are 1.0 mg/mL for Marble and Qingshi, 1.5 mg/mL for Hedishi, respectively

From: Nano-materials enhanced protectants for natural stone surfaces

Surface Time Treated With 101S + nano SiO2
SCA (°) ACA (°) RCA (°) HA (°)
Marble Oct. 2020 165.4 ± 0.3 167.3 ± 1.4 153.9 ± 1.3 13.4
Jul. 2021 165.8 ± 0.3 168.3 ± 2.0 150.9 ± 6.3 17.4
Qingshi Oct. 2020 166.2 ± 0.2 170.6 ± 0.5 150.9 ± 2.8 19.7
Jul. 2021 165.5 ± 0.3 170.1 ± 0.4 150.0 ± 3.5 20.1
Hedishi Oct. 2020 169.6 ± 0.1 170.8 ± 0.2 155.3 ± 1.7 15.5
Jul. 2021 164.0 ± 1.5 166.9 ± 2.0 153.2 ± 3.5 13.8