Polymer Modified Bitumen

IS : 15462: 2004 (ISI MARKED)

Description
 

Pavements designed and constructed for heavy duty traffic and extreme weather conditions require specially designed engineered Bitumen Grades. By changing the characteristics of normal bitumen with the addition of a polymer, either they are of elastomeric nature or elastomeric, we succeed to obtain bitumen that allow the mixture to be more cohesive, with much more strength and significant higher resistance to parameters like fatigue and permanent deformations for road pavements.

 

USES OF POLYMER MODIFIED BITUMEN:

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The main reasons to modify asphalts with polymers could be summarized as follows,

• 1) To obtain softer blends at low service temperatures and reduce crackin.

• 2) To reach stiffer blends at high temperatures and reduce rutting.

• 3) To reduce viscosity at layout temperatures.

• 4) To increase the stability and the strength of mixtures.

• 5) To improve the abrasion resistance of mixtures.

• 6) To improve fatigue resistance of mixtures.

• 7) To improve oxidation and aging resistance.

• 8) To reduce structural thickness of pavements.

• 9) To reduce life costs of pavements.

 

PAVEMENTS CONDITIOPNS TO USE PMB:

• 1) The development of very stressed pavement.

• 2) Roads for high and heavy traffic.

• 3) High loading.

• 4) High temperature amplitude.

• 5) More durable pavement.

• 6) Draining pavements.

 

GRADES OF PLYMER MODIFIED BITUMEN: