Polymer Modified Bitumen

Bashundhara Bitumen

Polymer Modified Bitumen

Bashundhara Bitumen

Selective bitumen & elastomeric polymer flawless together. Bashundhara PMB SBS-ID is one of the specially designed engineered bitumen grade to be used in making pavement, roads for heavy duty traffic to withstand extreme weather conditions.

APPLICATIONS

Premixed dense bituminous surfacing wearing course and Bituminous Binder course macadam of pavements based on Bashundhara PMB SBS-1D have been assured to have a longer life with a better resistance to-

  • RUTTING OR PERMANENT DEFORMATION
  • FATIGUE CRACKING
  • THERMAL CRACKING
  • STRIPPING
  • MOISTURE DAMAGE
  • AGING

FEATURES

This advanced product is manufactured by blending of high performing polymer with carefully chosen bitumen and has the excellent properties of-

  • ELASTIC RECOVERY
  • LOW TEMPERATURE FLEXIBILITY
  • HIGH TEMPERATURE STIFFNESS
  • SIGNIFICANT MOISTURE SUSCEPTIBILITY

TECHNICAL SPECIFICATIONS

RECOMMENDATIONS

PROPERTY

STANDARD

RESULT

UNIT

Penetration @ 25° C (100 gms, 5 sec.) 0.1 mm

JTG E20 T 0604

40- 60

53

-

Softening Point, °C (Ring & Ball)

JTG E20 T 0606

not less
than

75 84

°C

Dynamic Viscosity @135°C

JTG E20 T 0625

not more
than 3

2.2

Poise

Ductility@ 5 °C (5cm I min)

JTG E20 T 0605

not less
than

46

cm

Elastic Recovery @ 25°C

JTG E20 T 0662

not less
than

92

%

Storage Stability 48h, softening point difference

JTG E20 T 0661

not greater than 2.5

1.3

°C

Residual Penetration Ratio @25°C, 5sec, 1 OOg(RTFOT)

JTG E20 T 0604

not less
than

67

%

Residual Ductility @5 °C (RTFOT)

JTG E20 T 0605

not less
than

17

cm

Aggregate coating with boiling water

TVCN 7504:
2005

Grade-4,
min

Grade -5

Grade

RECOMMENDATIONS

Storage and Handling of PMB (SBS-1 D):

  • For short term storage (3-4 days), the recommended
    temperature is around 165-175 °C.
  • For long term storage (up to 2 weeks), the recommended
    temperature is below 140-150 °C.
  • For very long term storage (more than 2 weeks), the recommended
    temperature is below 100 °C.

TO ENSURE BEST RESULTS

Process

Temperature Range PMB (SBS- I D)

Mixing with aggregates

170-185 °C

Laying

155-170 °C

Compaction

Over 135 ° C

End of Compaction

110-120 °C