Table 3 Analysis of variance of real density, open porosity and water absorption
Origin of variations | Sum of squares | Degrees of freedom | Average of the squares | F | Probability | Critical value for F | |
|---|---|---|---|---|---|---|---|
Real density, (gr/cm3) | Between groups | 0.11 | 3 | 0.04 | 40.19 | 3.59E−05 | 4.07 |
Within groups | 7.20E−3 | 8 | 9.00E−4 | ||||
Water absorption [%] | Between groups | 0.37 | 3 | 0.12 | 61.16 | 7.37E−06 | |
Within groups | 0.02 | 8 | 2.00E−3 | ||||
Open porosity [%] | Between groups | 1.07 | 3 | 0.36 | 223.89 | 4.70E−08 | |
Within groups | 1.27E−2 | 8 | 1.60E−3 | ||||
Capillary water absorption coefficient (gr/m 2 s0.5) | Between groups | 0.83 | 3 | 0.28 | 744.41 | 3.99E−10 | |
Within groups | 3.00E−3 | 8 | 4.00E−4 |