From: Antimicrobial potential of consolidation polymers loaded with biological copper nanoparticles
Physical and mechanical properties | Sandstone | Limestone | ||||
---|---|---|---|---|---|---|
Untreated stones | AC/CuNPs | S/CuNPs | Untreated stones | AC/CuNPs | S/CuNPs | |
Bulk Density (g/cm3) | 1.6 ± 0.3 | 1.9 ± 0.4* | 1.8 ± 0.2 | 1.9 ± 0.3* | 2.2 ± 0.2** | 2.1 ± 0.3* |
Water Absorption (%) | 19.8 ± 1.9 | 14.3 ± 1.7* | 3.6 ± 0.4** | 8.4 ± 1.1** | 6.4 ± 0.5** | 2.3 ± 0.2** |
Porosity (%) | 26.3 ± 2.5 | 18.7 ± 2.2* | 4.3 ± 0.3** | 15.6 ± 1.5* | 9.7 ± 0.8** | 4.4 ± 0.4** |
Compressive strength (MPa) | 19.8 ± 1.6 | 28.3 ± 1.9** | 26.9 ± 2.7** | 26.9 ± 2.2** | 39.8 ± 2.7** | 32.5 ± 1.7** |
Tensile Strength (MPa) | 3.2 ± 0.6 | 4.9 ± 0.4** | 4.2 ± 0.6 | 4.3 ± 0.7* | 5.3 ± 0.4** | 4.9 ± 0.5** |