Table 4.
Comparison of the test results with previous studies on UHPC.
| Study | Variables | Shape and Size of Specimen (mm) | Specified Compressive Strength (MPa) | Water-to-Binder Ratio/Mineral Admixture (% of Binder) | Early-Age Strength Development (Curing Condition) |
|---|---|---|---|---|---|
| This study | Curing temperature, delay time, continuing time, moisture condition | Cylinder (Φ 100 × 200) | 180 | 0.2/Silica fume (20%) | 180 MPa in 7 days (40 °C for 4 days or 60 °C for 2 days in moist condition) |
| SAMARIS [1] | - | Cylinder (Φ 110 × 220) | 180 | 0.123/Silica fume (21%) | 150 MPa in 7 days (20 °C for 7 days in moist condition) |
| Ishii et al. [5] | Curing temperature | Not specified | 180 | Not specified | 147 MPa in 4 days (70 °C for 2 days) |
| Matsubara et al. [6] | Curing temperature | Cylinder (Φ 100 × 200) | 180 | 0.152/Silica fume (not specified) | 180 MPa in 7 days (40 °C or 60 °C for 7 days) |
| Ahlborn et al. [14] | Curing temperature, delay time | Cylinder (Φ 76 × 152) | 200 | Not specified | 137 MPa in 7 days (20 °C for 7 days) |
| Nakayama et al. [16] | Curing temperature, delay time, continuing time | Cylinder (Φ 100 × 200) | 150 | 0.15/Silica fume (15%) | 135 MPa in 7 days (60 °C for 3 h in moist condition) |
| Honma et al. [17] | Curing temperature | Cylinder (Φ 100 × 200) | 150–200 | 0.12–0.2/Silica fume (10%–20%) | 90–100 MPa in 7 days (20 °C for 7 days in moist condition) and |
| 130–170 MPa in 7 days (40 °C for 7 days in moist condition) |