PROPERTIES OF POLYMER AND RUBBER MODIFIED BITUMEN
Designation |
Elastomeric Thermoplastic Based |
Plastomeric Thermoplastic Based |
Natural Rubber Modified Binders |
Crumb Rubber Modified Binders |
Merthod of tests |
|
PMB
120 |
PMB 70 |
PMB 40 |
PMB 120 |
PMB 70 |
PMB 40 |
NRMB 120 |
NRMB 70 |
NRMB 40 |
CRMB 50 |
CRMB 55 |
CRMB 60 |
|
Penetration at 25°C, 0.1mm,100g.5 Sec |
90 to 150 |
50 to 90 |
30 to 50 |
90 to 150 |
50 to 90 |
30 to 50 |
90-150 |
50-90 |
30-50 |
<70 |
<60 |
<60 |
IS: 1203-1978 |
Saftening Point (R&B)°C
Minimum |
50 |
55 |
60 |
50 |
55 |
60 |
50 |
55 |
60 |
50 |
55 |
60 |
IS:1205-1978 |
Ductility at 27°C cm. |
+75 |
+60 |
+50 |
+50 |
+40 |
+30 |
+75 |
+60 |
+50 |
- |
- |
- |
IS:1208-1978 |
Fraass Breaking Point°C
Max |
-24 |
-18 |
-12 |
-20 |
-16 |
-12 |
-20 |
-16 |
-12 |
- |
- |
- |
IS:9381-1979 |
Flash Point by COC°C
Minimum |
220 |
220 |
220 |
220 |
220 |
220 |
220 |
220 |
220 |
220 |
220 |
220 |
IS:1209-1978 |
Elastic Recovery of Half Thread in Ductilometer at 15°C, %, Min |
75 |
75 |
75 |
50 |
50 |
50 |
50 |
40 |
30 |
50 |
50 |
50 |
Appendix-1 IRC:SP:53 2002 |
Separation Differnce in softening Point R&B°C, Maximum |
3 |
3 |
3 |
3 |
3 |
3 |
4 |
4 |
4 |
4 |
4 |
4 |
Appendix-2 IRC:SP:53 2002 |
Viscosity at 150°C poise |
1-3 |
2-6 |
3-9 |
1-3 |
2-6 |
3-9 |
- |
- |
- |
- |
- |
- |
IS:1206-1978
|
Thin Film Oven Test (TFOT) on Residue (IS:9382-1992) |
Loss in Weight, %,
Maximum |
1.0 |
1.0 |
1.0 |
1.0 |
1.0 |
1.0 |
- |
- |
- |
- |
- |
- |
IS:9382-1979 |
Increase in Softening
Point °C, Maximum |
7 |
6 |
5 |
7 |
6 |
5 |
7 |
6 |
5 |
7 |
6 |
5 |
IS:12QS.1978 |
Reduction in Penetration of Residue at 25°C, Maximum |
35 |
35 |
35 |
35 |
35 |
35 |
- |
- |
- |
- |
- |
- |
IS:1203-1978 |
Penetration at 25°C 0.1 mm, 100g, 5 Sec. Minimum % of original |
- |
- |
- |
- |
- |
- |
60 |
60 |
60 |
60 |
60 |
60 |
IS:1203-1978 |
Elastic Recovery of Half thread in Ductilometer at 25°C, % Minimum |
50 |
50 |
50 |
35 |
35 |
35 |
35 |
30 |
25 |
35 |
35 |
35 |
Appendix-1 IRC:SP:53 2002 |