Table 3.
Rounded values for relative decrease/increase [%] for sound (S), aged (A) and consolidated (C) samples and absolute average values of Young’s modulus [kN/mm2], splitting tensile strength [N/mm2], and flexural strength under concentrated load [N/mm2] for St. Margarethen Limestone and Schlaitdorf Sandstone. The graphical visualisation of the same values can be found in Figure 6. All tests were performed six months after consolidation.
| Consolidant | (S) Sound ± Std.N |
(A) Aged ± Std.N |
(C) Consolidated ± Std.N |
Decrease (S-A, %) |
Increase (A-C, %) |
Magnitude (S-C, %) |
||
|---|---|---|---|---|---|---|---|---|
| St. Margarethen Limestone | Young’s Modulus (kN/mm2) | KSE 300 | 22.7 ± 2.4 | 9.2 ± 0.7 | 18.1 ± 1.1 | −60 | +97 | −21 |
| NC-25C | 10.0 ± 2.9 | 22.2 ± 4.1 | −56 | +123 | −2 | |||
| NC-27CP | 13.6 ± 7.9 | 32.7 ± 9.5 | −40 | +141 | +44 | |||
| Splitting Tensile Strength (N/mm2) | KSE 300 | 3.3 ± 0.4 | 1.2 ± 0.2 | 1.7 ± 0.4 | −63 | +42 | −48 | |
| NC-25C | 2.1 ± 0.6 | +76 | −35 | |||||
| NC-27CP | 2.5 ± 0.5 | +111 | −23 | |||||
| Flexural Strength (N/mm2) | KSE 300 | 7.2 ± 1.8 | 3.8 ± 1.7 | 5.0 ± 1.8 | −47 | +31 | −31 | |
| NC-25C | 6.2 ± 1.1 | +64 | −13 | |||||
| NC-27CP | 6.9 ± 1.1 | +82 | −4 | |||||
| Schlaitdorf Sandstone | Young’s Modulus (kN/mm2) | KSE 300 | 15.7 ± 1.9 | 5.5 ± 1.3 | 11.7 ± 1.4 | −65 | +114 | −26 |
| NC-25C | 6.4 ± 1.0 | 33.6 ± 3.3 | −60 | +429 | +114 | |||
| NC-27CP | 5.9 ± 0.6 | 26.8 ± 1.1 | −63 | +356 | +70 | |||
| Splitting Tensile Strength (N/mm2) | KSE 300 | 3.2 ± 0.2 | 2.2 ± 0.5 | 2.5 ± 0.8 | −34 | +16 | −24 | |
| NC-25C | 4.1 ± 0.5 | +89 | +25 | |||||
| NC-27CP | 3.9 ± 0.4 | +80 | +19 | |||||
| Flexural Strength (N/mm2) | KSE 300 | 6.6 ± 1.2 | 2.8 ± 0.6 | 7.2 ± 1.9 | −58 | +156 | +8 | |
| NC-25C | 9.0 ± 1.2 | +223 | +37 | |||||
| NC-27CP | 8.4 ± 1.3 | +198 | +26 | |||||