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PMB 40

Polymer Modified Bitumen (PMB) 40 is a type of bitumen that is modified with polymers to improve its performance properties, specifically in terms of elasticity, strength, and resistance to high temperatures and loads.

Appearance: Black solid or a viscous liquid
Standards: IS 15462:2004
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 40 – Technical Specifications

Properties	Units	Limits	Test Methods
Penetration @25°C (77°F), 100gm, 5sec	0.1MM	30-50	ASTM D5
Softening Point, Ring & Ball	°C	Min. 60	ASTM D36
Fraass Breaking Point	°C	Max. -16	EN 12593
Flash Point Cleveland open cup	°C	Min. 220	ASTM D92
Elastic Recovery at 15°C	%	Min. 30	ASTM D6084
Separation, Difference in Softening Point	°C	Max. 3	–
After Rolling Thin-Film Oven Test (RTFO)			ASTM D1754
Loss on Heating	%Wt	Max. 1.0	ASTM D6
Increase in Softening Point	°C	Max. 5	ASTM D36
Drop in Penetration	%	Max. 35	ASTM D5
Elastic Recovery at 25°C	%	Min. 35	ASTM D6084

Key Characteristics of PMB 40

Polymer Modification: PMB 40 is modified with polymers such as styrene-butadiene-styrene (SBS), ethylene-vinyl-acetate (EVA), or other similar additives. This modification improves the bitumen’s resistance to deformation, cracking, and aging.
High Elastic Recovery: The polymer modification provides enhanced elasticity, allowing the binder to recover its shape after being deformed by traffic loads.
Enhanced Resistance: It has improved resistance to rutting at high temperatures, cracking at low temperatures, and fatigue under repeated traffic loads.

Main Applications Of Polymer Modified Bitumen PMB 40

PMB 40 is typically used in applications where high temperature stability, high load-bearing capacity, and flexibility are crucial:

Highways and Expressways: Used in high-traffic highways and expressways due to its high resistance to rutting and deformation under heavy and continuous traffic.
Urban Roads and Industrial Zones: Applied in urban areas and industrial zones where roads experience frequent heavy vehicle traffic and high temperature exposure.
Bridges and Elevated Roads: Suitable for bridge decks and overpasses due to its enhanced flexibility and resistance to thermal stresses, preventing cracking and rutting.
Airport Runways and Taxiways: Used in airport pavements where heavy aircraft loads and high temperatures demand superior resistance to rutting and deformation.
Heavy-Duty Pavements: Ideal for heavy-duty pavements such as those in container terminals, freight yards, and industrial facilities that see frequent loading and unloading activities.

PMB 40 is a polymer-modified bitumen with a penetration grade of 40. It is designed to offer high resistance to rutting, cracking, and deformation under heavy traffic loads and extreme temperature variations. Its polymer modification enhances its elasticity, durability, and flexibility, making it suitable for highways, bridges, airport runways, urban roads, and heavy-duty pavements in hot climates or high-stress conditions.