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PMB 70-10

Polymer Modified Bitumen (PMB) 70-10 is a type of asphalt binder that is enhanced with polymers to improve its performance characteristics. The designation “70-10” indicates the temperature range in which this bitumen can effectively perform.

Appearance: Black solid or a viscous liquid
Standards: IS 15462:2019
HS Code: 27132000

Package: Bitumen are packed in

New Steel Drums of 200Kg / 180Kg / 156Kg / Customized
Jumbo Bags of 1Ton
Bulk Bitumen Tank Container

Polymer Modified Bitumen PMB 70-10 – Technical Specifications

Properties	Units	Limits	Test Methods
Softening Point, Ring & Ball	°C	Min. 65	ASTM D36
Elastic Recovery at 15°C	%	Min. 70	ASTM D6084
Flash Point Cleveland open cup	°C	Min. 230	ASTM D92
Viscosity at 150 °C	Pa.s	Max. 1.2	ASTM D2171
Complex modulus G*/Sin δ at 70°C,25mm Plate,1mm Gap, at 10rad/s	kPa	Min. 1.0	ASTM D7175
Phase Angle (δ)	degrees (°)	max. 75	ASTM D7175
Separation, Difference in Softening Point	°C	Max. 3	–
FRAASS Breaking Point^a	°C	Max. -10	EN 12593
After Rolling Thin-Film Oven Test (RTFO)			ASTM D1754
Loss on Heating	%Wt	Max. 1.0	ASTM D6
Complex modulus G*/Sin δ at 70°C,25mm Plate,1mm Gap, at 10rad/s	kPa	Min. 2.2	ASTM D7175
Multiple Stress Creep Recovery (MSCR) test			ASTM D7405
a) Standard Traffic (S), Jnr 3.2, Jnr diff Max 75% at 70°C	kPa-1	Max. 4.5	ASTM D7405
b) Heavy Traffic (H), Jnr 3.2, Jnr diff Max 75% at 70°C	kPa-1	Max. 2.0	ASTM D7405
C) Very Heavy Traffic (H), Jnr 3.2, Jnr diff Max 75% at 70°C	kPa-1	Max. 1.0	ASTM D7405
d) Extremely Heavy Traffic (H), Jnr 3.2, Jnr diff Max 75% at 70°C	kPa-1	Max. 0.5	ASTM D7405
Pressure Aging Vessel Residue (PAV)
Complex modulus G*/Sin δ at 34°C, 8mm Plate, 2mm Gap, at 10rad/s	kPa	Max. 6000	ASTM D7175
Notes a – FRAASS Breaking Point only to be evaluated in case the project site has subzero temp conditions.

Key Characteristics of PMB 70-10

High Temperature Performance: Designed to withstand pavement temperatures up to 70°C without softening or rutting, making it suitable for hot climates or high-traffic roads.
Low Temperature Performance: Capable of maintaining flexibility and resisting cracking down to temperatures of -10°C.
Polymer Modification: Polymers, often styrene-butadiene-styrene (SBS) or other elastomers, are added to the bitumen to increase its elasticity, strength, and overall durability. This modification enhances resistance to both high-temperature rutting and low-temperature cracking.

Main Applications Of Polymer Modified Bitumen PMB 70-10

PMB 70-10 is widely used in situations where enhanced rutting resistance, durability, and flexibility are critical:

High-Traffic Roads and Highways: Used for highways and roads with heavy and continuous traffic. PMB 70-10’s resistance to deformation ensures road longevity and durability.
Bridges and Elevated Structures: Effective on bridges and overpasses that experience high-temperature variations. The polymer modification helps prevent cracking in these thermally sensitive structures.
Airport Runways and Taxiways: Ideal for airport pavements that endure heavy aircraft loads and varying temperatures. PMB 70-10 provides excellent resistance to rutting and cracking in aviation environments.
Industrial Zones and Urban Roads: Suitable for urban roads and industrial areas where pavements face frequent heavy loads. Its high deformation resistance makes it ideal for areas experiencing repetitive heavy vehicle traffic.

PMB 70-10 is a polymer-modified bitumen designed to perform effectively at temperatures ranging from 70°C to -10°C. Its polymer modification enhances its rutting resistance, flexibility, and durability, making it suitable for high-traffic roads, bridges, airport runways, urban roads, and industrial areas. It is especially beneficial in hot climates and moderate cold regions where pavement stability and resistance to deformation are crucial.