Annual Report,2009 - Directorate General of Mines Safety

DGMS Annual Report, 2009
immersion)
2.1 Physico-Mechanical Properties
The Physico-Mechanical Properties of the resin capsule shall conform to the following
parameters and values :
1. Compressive Strength
30 minutes
30.0 MPa (Min.)
24 hrs
80.0 MPa (Min.)
2. Bond Strength Test
30 minutes
10.0 Tonnes
24 hrs
20.0 Tonnes
3. Shot Encapsulation Test (Tonne)
30 minutes
12.0 Tonnes
24 hrs
20.0 Tonnes
4 System Stiffness 20 KN/mm – System stiffness between
50 to 150 KN
5 Creep Test
(%)
Fast set at 5 KN for 25
minutes
0.12 (Max)
Slow set at 20 KN for 25
0.12 (Max)
minutes
6 Shear Test
30 minutes
7.50 Tonnes
24 hrs
15.0 Tonnes
7 Elastic Modulus Test
24 Hrs 11.0 GPa
8 Shrinkage test
At 30±2 0 C & 65 % humidity
24 hrs
0.01 1% (Max.)
7 days
0.01 1% (Max.)
2.2 Other Properties :
1 Flammability Test
Non-Flammable
Reaction of resin system is exothermic and methane with
coal dust is likely to be present in underground mines. If
reaction temperature reaches above 120 0 C by any reason,
resin matrix should not catch fire. Product should be of very
low flammability. The flame should cease within 10 second
after removal of the product from burner after 30 second.
NOTE :- The test will be applicable within three month of
issuing of this guidelines.
2 Toxicity
Non-Toxic in
Product should not affect skin, eyes and other organs of Nature
human being during application of the product.
3 Self Life Six Month
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