HANNANTH Crumb Rubber Modified Bitumen (CRMB)
Confirming to IS15462-2004

Applications

CRMB can be used for wearing courses at heavy trafficked roads, busy intersections, bridge decks and roundabouts for increased life of the surfacing.

  • Reducing traffic noise
  • Bus by lane
  • Water proofing concrete structure
  • Sand asphalt
  • Heaving traffic lane
  • Sloper, roundabouts, junctions
  • Industrial and multimodal platforms
  • Providing high skid resistance (thin overlay chip seal)
  • Porous asphalt and acoustic thin overlay
  • In Stress Aborbing Membrane Interlayer(SAMI)
  • For high rainfall regions
  • Airport runway and parking apron
  • Parking place of buses and trucks

Advantages

  • Lower susceptibility to daily & seasonal temperature variations
  • Higher resistance to deformation at elevated pavement temperature variation
  • Better edge resistance properties
  • Better adhesion between aggregate & binder ensure longer life, strength & stability
  • Delay of cracking & reflective cracking
  • Overall improved performance in extreme climate condition & under heavy traffic condition
  • Prevents rutting
  • Resistance creep & higher indirect tensile strengthen surface course

Type of CRMB & Recommendation for specific use:

  • CRMB :: Recommended for hot climate area.
  • CRMB :: Recommended for moderate climate area
  • CRMB :: Recommended for cold climate area

Specifications

No.
Designation

CRMB

50

CRMB

55

CRMB

60

Test Method
1. Penetration at 25 degree C
<70
<60
<50
IS 1203-1978
2. Softening point (R & B), C Min.
50
55
60
IS 1205-1978
3. Elastic recovery of half thread in

Ductilometer at 15 degree C, % Min.

50
50
50
IS 15462-2004
4. Flash point degree C Min
220
220
220
IS 1209-1978
5. Separation difference in softening point, (R&B) degree C Max
4
4
4
IS 15462-2004
6. Thin Flim Oven Test (TFOT) on residue

(a) Reduction in penetration of residue at 25 degree C

60
60
60
IS 1230-1978
(b) Increase in softening point,degree C Max.
7
7
5
IS 1205-1978
(c) Elastic recovery of half thread in ductilometer at 25 degree C, % Min.
35
35
35
IS 15462-2004

Storage

Stringent heating and handling Procedure must be followed at all time as per manufacturer guigeline.

Health and Safety

Treat as hot bitumen. Serious risk of burns.Follows personal hygiene and protection procedures at all times.