Research Article
Mechanical Properties of Steel Fibers and Nanosilica Modified Crumb Rubber Concrete
Table 4
Results of the specimens’ compressive and splitting tensile strengths tests at 28 d (unit: MPa).
| | Group | C-28 d | CAvg-28 | T-28 d | TAvg-28 |
| | C35CR5 | | | | | | | | | | 1SF0 | 40.0 | 37.7 | 38.3 | 38.7 | 2.8 | 2.9 | 3.0 | 2.9 | | 1SF0.5 | 44.0 | 42.9 | 41.6 | 42.8 | 3.3 | 3.6 | 3.1 | 3.3 | | 1SF1 | 46.8 | 44.5 | 42.4 | 44.6 | 4.9 | 4.7 | 5.2 | 4.9 | | 1SF1.5 | 38.9 | 38.8 | 42.3 | 40.0 | 4.6 | 4.0 | 4.6 | 4.4 | | 1SF1NS1 | 47.1 | 47.9 | 46.3 | 47.1 | 5.3 | 4.8 | 5.2 | 5.1 | | 1SF1NS2 | 49.0 | 46.6 | 46.4 | 47.3 | 5.2 | 4.9 | 5.5 | 5.2 |
| | C45CR5 | | | | | | | | | | 2SF0 | 50.1 | 51.1 | 50.8 | 51.3 | 3.4 | 3.3 | 3.4 | 3.3 | | 2SF0.5 | 54.7 | 51.9 | 51.8 | 52.8 | 3.7 | 3.4 | 3.8 | 3.6 | | 2SF1 | 53.3 | 54.8 | 52.5 | 53.5 | 4.2 | 4.9 | 4.3 | 4.4 | | 2SF1.5 | 57.6 | 54.6 | 50.7 | 54.3 | 4.8 | 4.9 | 5.4 | 5.0 | | 2SF1NS1 | 54.1 | 55.1 | 55.0 | 54.9 | 4.8 | 5.3 | 5.3 | 5.1 | | 2SF1NS2 | 56.1 | 58.4 | 53.7 | 56.1 | 4.9 | 5.2 | 4.6 | 4.9 |
| | C45CR10 | | | | | | | | | | 3SF0 | 50.0 | 49.8 | 52.7 | 50.8 | 3.6 | 2.9 | 3.0 | 3.2 | | 3SF0.5 | 53.6 | 49.2 | 50.9 | 51.2 | 4.3 | 4.2 | 3.3 | 3.9 | | 3SF1 | 55.0 | 53.5 | 51.7 | 53.4 | 4.5 | 3.6 | 4.0 | 4.0 | | 3SF1.5 | 50.0 | 48.8 | 51.1 | 50.0 | 4.0 | 4.9 | 3.7 | 4.0 | | 3SF1NS1 | 52.7 | 51.5 | 49.7 | 51.3 | 3.9 | 3.8 | 3.9 | 3.9 | | 3SF1NS2 | 51.5 | 52.1 | 53.6 | 52.4 | 3.7 | 3.9 | 3.5 | 3.7 |
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