SI No | Properties | Prescribed Value as Per IS: 3129-1985 | A (300 kg/m3) | B (400 kg/m3) | C (500 kg/m3) |
1 | Moisture content, % | Max 16 | 7.01 | 6.87 | 6.91 |
Standard Deviation | 0.18 | 0.2 | 0.3 | ||
Coefficient of Variation | 2.38 | 2.81 | 2.17 | ||
2 | Modulus of rupture (N/mm2) | Min 1.5 | 2.54 | 6.97 | 13.9 |
Standard Deviation | 0.5 | 0.2 | 0.9 | ||
Coefficient of Variation | 20.6 | 2.2 | 5.5 | ||
3 | Swelling due to surface absorption (after 2 hours soaking) % | Max 5 | 6.84 | 4.88 | 4.01 |
Standard Deviation | 1.213 | 0.316 | 0.818 | ||
Coefficient of Variation | 11 | 3.82 | 4.65 | ||
4 | Water absorption | No Splitting/ No disintegration | No splitting at edges & No sign of disintegration |