Table 3 Compressive strength of concrete cubes.
From: Effect of Adding Scoria as Cement Replacement on Durability-Related Properties
Sample | Compressive strength (MPa)-normalized | ||||
|---|---|---|---|---|---|
2 days (%) | 7 days (%) | 28 days (%) | 56 days (%) | 90 days (%) | |
C1/CEM I (control) | 13.6–100 | 24.9–100 | 35.0–100 | 40.6–100 | 42.3–100 |
C2/10 % | 12.8–94 | 24.4–98 | 33.6–96 | 39.8–98 | 41.6–98 |
C3/15 % | 11.8–87 | 21.0–84 | 30.1–86 | 37.0–91 | 39.3–93 |
C4/20 % | 11.0–81 | 20.1–81 | 29.5–84 | 35.1–86 | 38.3–91 |
C5/25 % | 9.9–73 | 17.6–71 | 26.5–76 | 31.8–78 | 36.5–86 |
C6/30 % | 8.9–65 | 16.5–66 | 24.6–70 | 29.6–73 | 33.1–78 |
C7/35 % | 8.5–63 | 16.0–64 | 23.4–67 | 28.0–69 | 30.9–73 |