Table 6 Statistical analysis of compressive strength.
Descriptive statistics | Cement | Nano Silica Content | Fly ash | Na2SO4 | NCA | RCA | FA | Water | Ad | Days | Compressive strength |
|---|---|---|---|---|---|---|---|---|---|---|---|
Mean | 426.3 | 8.3 | 123.8 | 8.8 | 495.0 | 405.0 | 800.0 | 180.0 | 12.0 | 45.4 | 42.2 |
Standard error | 7.8 | 0.0 | 7.8 | 0.4 | 30.5 | 30.5 | 0.0 | 0.0 | 0.0 | 3.5 | 1.3 |
Median | 426.3 | 8.3 | 123.8 | 11.0 | 450.0 | 450.0 | 800.0 | 180.0 | 12.0 | 28.0 | 43.9 |
Mode | 550.0 | 8.3 | 0.0 | 11.0 | 900.0 | 0.0 | 800.0 | 180.0 | 12.0 | 3.0 | 58.7 |
Standard deviation | 92.6 | 0.0 | 92.6 | 4.4 | 361.3 | 361.3 | 0.0 | 0.0 | 0.0 | 41.9 | 15.3 |
Sample variance | 8569.0 | 0.0 | 8569.0 | 19.5 | 130532.4 | 130532.4 | 0.0 | 0.0 | 0.0 | 1759.4 | 235.0 |
Range | 247.5 | 0.0 | 247.5 | 11.0 | 900.0 | 900.0 | 0.0 | 0.0 | 0.0 | 117.0 | 56.6 |
Minimum | 302.5 | 8.3 | 0.0 | 0.0 | 0.0 | 0.0 | 800.0 | 180.0 | 12.0 | 3.0 | 12.1 |
Maximum | 550.0 | 8.3 | 247.5 | 11.0 | 900.0 | 900.0 | 800.0 | 180.0 | 12.0 | 120.0 | 68.6 |
Sum | 59675.0 | 1155.0 | 17325.0 | 1232.0 | 69300.0 | 56700.0 | 112000.0 | 25200.0 | 1680.0 | 6360.0 | 5907.8 |
Count | 140.0 | 140.0 | 140.0 | 140.0 | 140.0 | 140.0 | 140.0 | 140.0 | 140.0 | 140.0 | 140.0 |
