PGXpand Archives

PMB mixes have been popular for decades and are designed to maintain the integrity of the roadway while enhancing functional performance characteristics. Most virgin bitumen lacks the complete properties needed in quality to build high-performing roadways. Adding polymers to create a PMB can help strengthen and toughen the roadway surface. PGXpand®, a bitumen-friendly polymer additive, is uniquely designed to allow polymer modified bitumen (PMB) producers to boost the high temperature performance of the binder while maintaining low temperature properties. It minimizes SBS content, improves viscosity, supports higher filler loading, and provides better stability.

Asphalt Additives – Roads & Infrastructure August 2021

"Sripath on path to bitumen enhancement. With demand for modified bitumen increasing worldwide, Sripath Technologies is ensuring bitumen manufacturers and contractors have access to quality additives to enhance bitumen performance..." Roads and Infrastructure - August 2021 Edition. Download the full article here.

By Krishna Srinivasan, PhD | President|2025-02-10T18:46:57+00:00August 9th, 2021|Categories: Bitumen Quality, Blog, Case Study / Industry Insights, In The Press|Tags: NuMIXER, PGXpand, ReLIXER, ReNUBIT, Roads & Infrastructure Magazine, Sripath Asia-Pac®|Comments Off

PGXpand Makes Way for PMB in India’s Highway Mixes

Sripath Featured in AsphaltPro Magazine Sripath Technologies recently conducted a successfully joint trial with Cube Highways in Andhra Pradesh, India, paving a wear layer on a 2 Km (1.25 miles) stretch of SH-2. Sripath’s PGXpand polymer was used to enhance the performance of locally sourced VG-30 grade of bitumen (asphalt). Click below to read about this trial in [...]

Piduguralla Trial Performance

Last week we briefly discussed the N.A.M. expressway trial in Piduguralla, India that, Krishna Srinivasan attended recently. At the request of our readers for more info, we are able to share with you some of the performance details of trial along with some interesting comments from one of the paver operators. VG30 VG30 + 1.5% PGXpand® VG30 + 3.5% SBS [...]

Sripath Visits India

Krishna Srinivasan, representing Sripath Technologies, LLC recently had an extended visit to India where he met with Professor Dharamveer Singh from the Civil Engineering Department of Bombay IIT to discuss undertaking research projects of mutual interest, met with local contractors, and assisted with many field trials of PGXpand®. PGXpand® was used to improve the high temperature and rutting performance [...]