Source of variation | Degree of freedom | Mean square and F-values for panel properties | ||||||||
Mechanical properties | 24 hrs horizontal water soak | |||||||||
Modulus of rupture | Modulus of elasticity | Water absorption | Thickness swelling |
| ||||||
MS × 104 | F | MS × 1010 | F | MS × 104 | F | MS × 104 | F | FTab | ||
Main effects | ||||||||||
Cement/B. vulgaris mix ratio | 4 | 0.152 | 2.92*K | 1.655 | 15.18** | 1.304 | 18.11** | 0.432 | 3.86** | 3.44 |
Soak treatment | 3 | 0.164 | 3.15*a | 1.499 | 13.29** | 1.109 | 15.40** | 0.310 | 2.77*a | 3.91 |
Density | 1 | 0.148 | 2.85NS | 2.617 | 24.01** | 0.405 | 5.63* | 1.023 | 9.13** | 6.84 |
First order interaction | ||||||||||
Mix ratio/density | 4 | 0.911 | 17.52** | 3.835 | 35.18** | 1.071 | 14.88** | 3.084 | 27.54** | 3.44 |
Mix ratio/soak treatment | 4 | 0.630 | 12.12** | 2.046 | 18.77** | 0.224 | 3.11*K | 1.816 | 16.21 | 3.44 |
Soak treatment/density | 3 | 0.512 | 9.85** | 1.325 | 12.16** | 0.188 | 2.61*a | 0.301 | 2.69*a | 3.91 |
Second order interaction | ||||||||||
Mix ratio/density/soak treatment | 4 | 0.448 | 8.62** | 4.472 | 41.03** | 0.897 | 12.46** | 0.416 | 3.71** | 3.44 |
Error | 136 | 0.052 | - | 0.109 | - | 0.072 | - | 15.232 | 0.112 | - |
Total | 159 | - | - | - | - | - | - | - | - | - |