PENETRATION GRADE BITUMEN
Bashundhara Bitumen
PENETRATION GRADE
BITUMEN
Bashundhara Bitumen
Consistency and empirical tests result second to none. Bashundhara Premium penetration grade (60/70) is produced through aeration on vacuum bottom from selective ideal bituminous heavy crude oil in bitumen production units.
APPLICATIONS
Bashundhara Premium penetration grade (60/70) is suitable for roadway construction and repair for flexible pavement of premixed dense bituminous surfacing. Briefly, it is in keeping with both binder course and wearing course, seal coat, bituminous carpeting, prime and tack coat for various categories of highway.
Bashundhara Premium penetration grade (60/70) has some outstanding performances in highway construction which are-
- CAPABLE OF WEAR AND ABRASIVE EFFECTS OF MOVING VEHICLE
- SUFFICIENT STABILITY
- PREVENTING RUTTING AND SHOVING
- IMPROVED SKID RESISTANCE
- WEATHER FRIENDLY
FEATURES
Bashundhara Premium penetration grade (60/70) obtains thermoplastic that causes the material to be soften at high temperatures and harden at lower temperatures; as well, it has a unique temperature-viscosity relationship. This product determines the following performance-parameters:
- DURABILITY
- ADHESION
- RHEOLOGY
- SAFETY
- PURITY
- CONSISTENCY
TECHNICAL SPECIFICATIONS
RECOMMENDATIONS
PROPERTY
STANDARD
RESULT
UNIT
Specific Gravity @25°C
ASTM D70
1.01 -1.06
1.028
-
Flash point (OpenCup), °C
ASTM D92
250 Min.
304
°C
Penetration @ 25°C (100 gms, 5 sec.)0.1mm
ASTM 05
60- 70
63.7
-
Softening Point, °C (Ring & Ball)
ASTM 036
46- 55
49.5
°C
Ductility @ 25 °c (5cm I min)
ASTM D113
100 Min.
>100
cm
Loss on Heating, %wt @ 163°C, (5 hours)
ASTM D6
0.5 Max.
0.028
%wt.
Solubility in Trichloroethylene, %wt.
ASTM D2042
99 Min.
99.8
%wt.
RECOMMENDATIONS
Storage and Handling of Grade 60/70:
-
For short or very long term storage the recommended
temperature is between 125-130 °C. For pumping
recommended temperature is 110-115 °C
TO ENSURE BEST RESULTS
Process
Temperature Range Grade 60/70
Mixing with aggregates
155-165 °C
Laying
135-145 °C
Compaction
Over 120 °C
End of Compaction
90-110 °C
