Table 4.
Values of static contact angle (θ°), relative capillary index (CIrel), maximal water absorption (Qi) (mg·cm−2), capillary index (CI), absorption coefficient (AC) (mg·cm−2·s−1/2) and δ t/δ nt data of water vapour permeability values (kg·m−1·s−1·Pa−1) for untreated (nt) and treated (t) Apuan marble specimens.
| Treatment | θ° nt | θ° t | CIrel | Qi nt | Qi t | CI nt | CI t | AC nt | AC t | δ t /δ nt |
|---|---|---|---|---|---|---|---|---|---|---|
| SILRES BS 290 | 58 ± 11 | 101 ± 5 | 0.17 ± 0.03 | 4.02 ± 1.24 | 0.80 ± 1.11 | 0.88 ± 0.11 | 0.75 ± 0.55 | 0.05 ± 0.04 | 0.003 ± 0.003 | 0.29 ± 0.22 |
| WNC | 66 ± 10 | 114 ± 1 | 0.75 ± 0.05 | 4.56 ± 2.64 | 3.61 ± 2.34 | 0.83 ± 0.08 | 0.81 ± 0.07 | 0.07 ± 0.07 | 0.026 ± 0.011 | 1.17 ± 0.38 |
| ANC | 72 ± 18 | 130 ± 10 | 0.13 ± 0.02 | 3.50 ± 0.17 | 0.57 ± 0.10 | 0.86 ± 0.04 | 0.70 ± 0.10 | 0.03 ± 0.01 | 0.006 ± 0.0004 | 0.91 ± 0.21 |