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