An Effective Bitumen-Friendly Polymer for Superior Roadway Performance and Durability

Polymer Modified Bitumens (PMB) are utilized in Asphalt Mixes to improve high temperature grade, stiffness, rutting resistance and damage tolerance, resulting in more durable roadways which are able to withstand increased traffic loads. PGXpand, a Bitumen-Friendly Polymer (BF Polymer), developed by Sripath Technologies, is unlike any traditional elastomeric or plastomeric polymers. The BF Polymer interacts with the binder in a very unique fashion, imparting key performance benefits to PMB Mixes, while mitigating the processing difficulties and shortcomings typically associated with traditional polymers. Increasingly, experts from around the globe believe that performance and durability of roadways is more important than measuring elastic recovery of the modified binder, which only confirms the presence of a polymer [1, 2]. This is where the BF Polymer shines. It is designed to interact with bitumen in a very innovative and unique manner. The BF Polymer is designed to be highly dosage efficient, storage stable, and easy to mix into bitumen. It is designed to improve the workability of PMB Mixes and mimic the advantages of warm mix additives. It is designed to lower the paving temperatures and make the mix easier to pave and compact. The BF Polymer is designed to deliver the desired roadway performance and durability for targeted weather and traffic conditions. Roadways paved using BF Polymer PMBs deliver outstanding rutting resistance, excellent fatigue properties, and long-term durability.