Research Article
Rebound Hammer Test: An Investigation into Its Reliability in Applications on Concrete Structures
Table 1
Concrete mix characteristics. See equation (
1) for the meaning of the symbols.
| Mix type | Aggregates (% in weight) | Pl. (l) | Water (l) | Cem. content (kN) | Cem. type (R) | fc,28 | Rc,28 | (f/R)28 | Pl. (l) | Rc,testing | Dens (kN/m3) | s-best fitting | s-EC2 | C 0/4 | C 3/6 | Nat. 6/12 |
| C10 | 40.2 | 26.9 | 32.9 | 1.9 | 255 | 1.93 | 32.5 | 7.7 | 8.3 | 0.93 | C10 | 17.7 | 22.0 | 0.80 | 0.35 | C25 | 43.2 | 21.9 | 34.9 | 3.6 | 204 | 3.06 | 32.5 | 23.0 | 26.0 | 0.88 | C25 | 16.5 | 22.9 | 0.45 | 0.35 | C30 | 41.5 | 23.0 | 34.2 | 4.0 | 167 | 3.72 | 32.5 | 13.3 | 15.1 | 0.88 | C30 | 41.1 | 22.4 | 0.48 | 0.35 | C40 | 40.2 | 24.9 | 34.9 | 4.5 | 193 | 3.73 | 32.5 | 28.7 | 32.2 | 0.89 | C40 | 48.1 | 22.8 | 0.40 | 0.35 | C55 | 38.2 | 36.9 | 24.9 | 5.3 | 178 | 4.41 | 42.5 | 47.5 | 51.2 | 0.93 | C55 | 73 | 24.6 | 0.30 | 0.35 |
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C: crushed aggregate; Nat.: natural aggregate; Pl: plasticizer/superplasticizer.
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