 |
|
|
GRADES |
PAVING |
INDUSTRIAL |
| |
(Conforming to IS Spcn. 73 of 1961) 80/100 • 60/70 • 30/40*
|
Conforming to IS Spcn. 702 of 1961)
20/30 *10/20
|
Conforming to IS Spcn.
702 of 1961)
20/25 10/20
|
| Specific Gravity @ 27 ºC, min. |
|
|
|
|
|
|
|
| Penetration @ 25 ºC, 100 grm. 5 secs, 1/100 cm. |
80 to 100 |
60 to 70 |
30 to 40 |
20 to 30 |
10 to 20 |
20 to 30 |
10 to 20 |
| Softening Point R & B, ºC |
35 to 50 |
40 to 55 |
50 to 65 |
55 to 70 |
65 to 80 |
80 to 90 |
85 to 100 |
| Flash Point Pensky Marten closed , 0 ºC, min |
175 |
175 |
175 |
200 |
200 |
200 |
200 |
| Ductility @ 27 ºC, min |
100 |
100 |
65 |
10 |
2.5 |
3 |
2 |
| Loss on heating % by wt. max. |
1 |
1 |
1 |
0.3 |
0.3 |
0.3 |
0.3 |
| Penetration of residue
Expressed as % item 2 |
60 |
60 |
60 |
- |
- |
- |
- |
Matter soluble in carbon Disulphide % by wt. min.
PRINCIPAL USED :
|
99 |
99 |
99 |
99 |
99 |
99 |
99 |
| Construction and maintenance of Roads, airports, canal linings, Etc., Saturant for roofings, electrical cables; For manufacturing asphalt emulsions. |
Joint fillings, mastics, tarpaulins, water roofing, etc., |
Electrical insulations, paints, canal linings, waterproofing, laminated papers. Roofing boards etc., |
* Not available on regular basis |
* Also available in bulk |
CUTBACKS |
(IS Spcn. 217 of 1961) RC – 3
|
CUTBACK 80 / 100
|
| |
Min. |
Max. |
Min. |
Max. |
| Viscosity, Standard Tar Visco – meter in seconds |
25@ |
75@ |
|
|
| Distillation per cent by volume of total distillate upto 360 ºC |
27ºC |
|
|
|
| % Rec. upto 225 ºC (437 º F) |
25 |
- |
- |
- |
| % Rec. upto 260 ºC (500 º F) |
55 |
- |
- |
- |
| % Rec. upto 315 ºC (600 º F) |
83 |
- |
- |
- |
| % Residue at 360 ºC (680 º F) |
13 |
- |
96 |
- |
| Tests on residue from distillation up to 360 ºC : |
|
|
|
|
| (a) Penetration @ 25 ºC |
80 |
120 |
100 |
140 |
| (b) Ductility @ 27 ºC |
100 |
- |
- |
- |
| (c) Solubility in CS2 wt % |
99.5 |
- |
- |
- |
| Flash P.M. ºC … … |
|
|
94 |
- |
Principal uses : Surface dressing, cold premixes, patching mixtures, soil stabilization, etc., Premixing with cold aggregates. |
|
|
