Research Article
Mechanical Characteristics of Steel Shear Keyed Joints in the Construction and Finished States
Table 2
Concrete mix proportions and 28-day compressive strength.
| | Strength grade | Water (kg/m3) | Cement (kg/m3) | Mineral powder (kg/m3) | Fly ash (kg/m3) | Sand (kg/m3) | Coarse aggregate (kg/m3) | Admixture (kg/m3) | Coarse aggregate size (mm) | fcm (MPa) |
| | C50 | 155 | 373 | 107 | 53 | 814 | 881 | 5.33 | 5–20 | 68.4 |
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