Table 1 Mix proportions and compressive strength of NC and UHPC
Raw materials | C40/C50 NC (kg/m3) | UHPC (kg/m3) | ||
|---|---|---|---|---|
Powder | Cement (42.5R) Fly ash | 350.0/420.0 95.0/90.0 | Cement (52.5R) | 680.0 |
Silica fume | 81.6 | |||
Quartz flour | 272.0 | |||
Water | 175.0/170.0 | 159.8 | ||
Superplasticizer | 7.1/8.2 | 17.0 | ||
Fine aggregate | River sand (0–4.75 mm) | 750.0/680.0 | Quartz sand (0.15–0.20 mm) | 169.8 |
Quartz sand (0.25–0.60 mm) | 433.6 | |||
Coarse aggregate | Broken basalt (4.75–19 mm) | 1040.0/1060.0 | Broken basalt (3–5 mm) | 581.0 |
Fiber | – | Steel fiber | 117.0 | |
Compressive Strength | C40: 45.7 MPa C50: 56.1 MPa | 135.5 MPa | ||