Rumays Intl. Trading Co.

Modified Bitumen

A variety of additives are used for modification of Bitumen. The degree of modification depends on type of Modifier, its dose and nature of Bitumen. The most commonly used Modifiers are:

Polymer Modified Bitumen (PMB)
Crumb Rubber Modified Bitumen (CRMB)

Polymer Modified Bitumen (PMB)

PMB meets the requirements in accordance with PMB of IS 15462 specifications designed for pavement applications. Heavy traffic intensity in terms of commercial vehicles, overloading of trucks and significant variations in daily & seasonal temperature of the pavement have been responsible for early development of distress symptoms like raveling, undulations, rutting, cracking, bleeding, shoving and potholing of bituminous surfaces.

Polymer Modified Bitumen Grades:

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Polymer Modified Bitumen (PMB) 76-10

Polymer Modified Bitumen (PMB) 76-22

Polymer Modified Bitumen (PMB) 82-10

Polymer Modified Bitumen (PMB) 86-22

Polymer Modified Bitumen Grades:

PMB 76-10
PMB 76-22
PMB 82-10
PMB 86-22

Advantages of using PMB:

Increase in softening point and decrease in the brittleness ensures more protection against hot Climatic Conditions
Increase in elastic recovery ensuring protection against the cold climatic condition
Improved adhesion between aggregate and binder
Improved fuel and water resistance
Water resistance properties are increased
Enhanced deformation resistance to low temperature cracking
Resistance to fatigue and rutting
Resistance to deformation at high temperature
Savings in total road life coasting
Not detrimental to basic properties of bitumen and enhances them.

Application of PMB:

On Heavy traffic levels, curves, crossroads etc.
Where there is risk of high and low road surface temperatures
For heavy-duty applications
As Bond coats
To improve durability in remote areas
In high rainfall areas and high-stress conditions.

Crumb Rubber Modified Bitumen (CRMB)

Crumb Rubber Modified Bitumen is special type of bitumen whose properties have been improved by the addition of crumb rubber & special types of additives like hydrocarbon materials, resins etc. Thus altering the physical properties of bitumen makes it more resistant to temperature variations, weather and high traffic loads, leading to enhanced pavement life, reduced maintenance cost and excellent driving comfort. CRMB can be used for wearing courses at heavy trafficked roads, busy intersections, bridge decks and roundabouts for increased life of the surfacing.

Rumays Intl. Trading Co.

is one of the petroleum and petrochemical market leaders in the bitumen industry.
Our Wide Range of Innovative Bitumen Products are designed to meet the Challenges of Road Construction, Roofing, Coating, Water Proofing & Airport sectors, alongside Specialty & Industrial applications.

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