Sl No. |
Property |
Unit |
IS 12406 - 2003 |
|
(Plain) |
||||
Grade II |
Grade I |
|||
1 |
Density |
Kg/m3 |
600 - 900 |
600 - 900 |
2 |
Variation from mean density |
% |
±10 |
±10 |
3 |
Moisture Content |
% |
05-Oct |
05-Oct |
4 |
Variation from mean moisture content |
% |
±3 |
±3 |
5 |
Water absorption (maximum) |
% |
|
|
a. After 2 hr. soaking |
9 |
6 |
||
b. After 24hr. soaking |
|
|
||
i. Upto and including 6mm thick |
45 |
30 |
||
ii. 7 to 12mm thick |
30 |
20 |
||
iii 13 to 19mm thick |
20 |
13 |
||
iv 20mm and above thick |
18 |
12 |
||
6 |
Linear Expansion (maximum) |
% |
|
|
a. Due to general absorption after 24 hr soaking |
|
|
||
i Thickness |
7 |
4 |
||
ii Length |
0.4 |
0.3 |
||
iii Width |
0.4 |
0.3 |
||
b. Due to surface absorption (in thickness) |
5 |
4 |
||
7 |
Modulus of rupture |
N/mm2 |
|
|
a. Up to 20mm thickness |
|
|
||
i Average |
28 |
28 |
||
ii Minimum Individual |
25 |
25 |
||
b. Above 20mm thickness |
|
|
||
i Average |
25 |
25 |
||
ii Minimum Individual |
22 |
22 |
||
8 |
Modulus of elasticity |
N/mm2 |
|
|
a. Up to 20mm thickness |
|
|
||
i Average |
2800 |
2800 |
||
ii Minimum Individual |
2500 |
2500 |
||
b. Above 20mm thickness |
|
|
||
i Average |
2500 |
2500 |
||
ii Minimum Individual |
2300 |
2300 |
||
9 |
Internal Bond |
N/mm2 |
|
|
a. Upto 20mm thickness |
|
|
||
i Average |
0.8 |
0.9 |
||
ii Minimum Individual |
0.7 |
0.8 |
||
b. Above 20mm thickness |
|
|
||
i Average |
0.7 |
0.8 |
||
ii Minimum Individual |
0.6 |
0.7 |
||
10 |
Internal Bond |
N/mm2 |
|
|
a. After cyclic test * |
|
|
||
i Average |
- |
0.45 |
||
ii Minimum Individual |
- |
0.4 |
||
b. After accelerated water resistance test * |
|
|
||
i Average |
- |
0.3 |
||
ii Minimum Individual |
- |
0.25 |
||
11 |
Screw withdrawal strength( minimum) |
N |
|
|
a. Face |
1500 |
1500 |
||
b. Edge (for thickness > than 12mm) |
1250 |
1250 |
||
12 |
Abrasion Resistance (Minimum) resolutions |
Nos. |
|
|
i Type -I |
- |
- |
||
ii Type - II |
- |
- |
||
iii Type - III |
- |
- |
||
iv Type - IV |
- |
|
||