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Polymer Modified Bitumen (PMB)

What is Polymer Modified Bitumen (PMB)?

PMB is modified bitumen (asphalt) combined with one or more polymer materials, (elastomeric thermoplastic polymers are used to make modified Bitumen [PMB]), which gives it more elasticity and extra strength. It's cost-effective, with regards to long term durability/ low maintenance, thereby making it a favourable material for infrastructure.

Benefits of Polymer Modified Bitumen (PMB)

Lower susceptibility
to temperature variations
Higher resistance to deformation
at high pavement temperature,
delay of cracking and reflective cracking
Better age
resistance properties
Better adhesion between
aggregates and binder
Higher fatigue
life of mixes
Overall improved
performance

Industrial Uses of Polymer Modified Bitumen (PMB)

Bitumen has been used as a construction material for centuries and is used in making home roofing solutions to withstand extreme weather conditions Pavements and roads that are better equipped to cope with the present traffic requirements. Future potential is good as NHAI is focusing on modified Bitumen in highways like PMB (Polymer) based in place of conventional VG-40 Grade

Polymer Modified Bitumen (PMB) Specifications

CHARACTERISTIC GRADES AND REQUIREMENTS METHOD OF TEST, REF TO.
TESTS TO BE CARRIED OUT ON ORIGINAL BINDER PMB 60-10 PMB 70-10 PMB 76-10 Annex IS/ASTM
Softening point (R and B), °C, Min 60 65 70 -- IS 1205
Elastic recovery of half thread in ductilometer at 15°C, percent, Min
ductilometer at 15°C, percent, Min		 70 70 70 Annex A --
Flash point, COC, °C, Min 230 230 230 -- IS 1209
Viscosity at 150°C, Pa.s, Max 1.2 1.2 1.2 -- ASTM D 4402
Complex modulus (G*) divided by
Sin delta (G*/sin δ) as Min 1.0 kPa, 25
mm Plate, 1 mm Gap, at 10 rad/s, at a temperature, °C		 64 70 76 Annex B --
Phase Angle (δ), degree, Max 75 75 75 Annex B --
Separation, difference in softening point (R&B), °C, Max 3 3 3 Annex C --
FRAASS breaking1) point, °C, Max -10 -10 -10 -- IS 9381
Loss in mass, percent, Max 1.0 1.0 1.0 -- IS 9382
Complex modulus (G*) divided by
Sin delta (G*/sin δ) as Min 2.2 kPa,
25 mm Plate,1 mm Gap,
at 10 rad/s at a temperature, °C		 64 70 76 Annex B --
a) Standard Traffic (S) Jnr3.2,
Max 4.5 kPa-1 Jnrdiff,
Max 75 percent Test Temperature, °C		 64 70 76 Annex D --
b) Heavy Traffic (H) Jnr3.2, Max 2 kPa-1
Jnrdiff, Max 75 percent Test Temperature, °C		 64 70 76 Annex D --
c) Very Heavy Traffic (V) Jnr3.2,
Max 1 kPa-1 Jnrdiff,
Max 75 percent Test Temperature, °C		 64 70 76 Annex D --
d) Extremely Heavy Traffic (E) Jnr3.2,
Max 0.5 kPa-1 Jnrdiff,
Max 75 percent Test Temperature, °C		 64 70 76 Annex D --
Sin delta (G*sin δ) as Max 6 000 kPa, 8 mm Plate, 2mm Gap, at 10 rad/s at a temperature, °C 31 34 37 Annex C --
FAQs

What is Polymer Modified Bitumen (PMB)?

How is PMB different from conventional bitumen?

Where is PMB commonly used?

What are the key benefits of PMB?

Why is PMB preferred for modern road infrastructure?

Does PMB improve pavement lifespan?

Is PMB suitable for extreme weather conditions?

How should PMB be stored?

How does Nayara Energy ensure PMB quality?

How can infrastructure companies procure PMB from Nayara Energy?

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