Research Article
Influence of Weathering on the Engineering Properties of Dacites in Northeastern Turkey
Table 4
Summary of statistics for the index and geomechanical parameters of the dacites in different weathering grades.
| | Parameter | Weathering grade | | I | II | III | IV |
| | Unit weight (kN/m3) | 25.3–26.9 (25.9) | 24.4–26.1 (25.5) | 23.8–25.0 (24.4) | 23.3–23.8 (23.5) | | Number of data | 156 | 51 | 19 | 10 | | P-wave velocity (m/s) | 3348.3–4680.1 (4045.9) | 2842.9–4164.6 (3628.8) | 2001.9–3238.7 (2775.5) | 1486.0–2142.2 (1910.3) | | Number of data | 136 | 52 | 16 | 6 | | Tensile strength (MPa) | 5.1–13.0 (8.3) | 3.0–9.3 (5.5) | 1.0–4.8 (2.4) | 0.4–2.2 (1.5) | | Number of data | 102 | 36 | 27 | 13 | | Block punch index (MPa) | 14.1–52.7 (27.1) | 12.2–34.6 (20.8) | 7.1–18.0 (11.6) | 4.2–13.0 (8.6) | | Number of data | 160 | 58 | 42 | 19 | | Uniaxial compressive strength (MPa) | 71.0–204.2 (122.2) | 31.1–110.6 (73.4) | 22.8–60.6 (39.4) | 6.3–28.9 (15.8) | | Number of data | 114 | 52 | 12 | 5 | | Porosity (%) | 5.1–12.0 (7.4) | 9.1–12.3 (10.8) | 10.2–15.9 (13.9) | 14.9–23.9 (19.6) | | Number of data | 26 | 8 | 6 | 20 | | Schmidt rebound value | 52.8–63.4 (58.0) | 47.0–52.6 (50.1) | 34.0–52.0 (42.0) | 17.4–38.0 (30.3) | | Number of data | 60 | 11 | 21 | 24 |
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Note. Numbers in the parentheses indicate the mean values.
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