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.

Overcoming Bitumen Quality Issues for Roadway Paving

Increasing demand for roadway construction and repair to support infrastructure in a more connected global economy is directly impacting the bitumen industry. The market is projected to grow at 4% CAGR by 2031, a rate tied to urbanization and increased availability of more sustainable practices for producing roadways that use the binder. However, those tasked with working with the [...]

Sripath Technologies President Krishna Srinivasan Presents on Innovative Additives to Enhance Roadway Performance

Sripath Technologies President Krishna Srinivasan was recently honored to speak to a delegation from the Government of Goa, India’s Public Works Department (Roads) during a conference coordinated by Bitpath, a Sripath affiliate based in India. The presentation topic, “Innovative Additives to Enhance Roadway Performance,” reflected the growing need for solutions to using high-RAP mixes on Indian roadways to address [...]

By Vince Aurilio|2025-08-18T16:17:03+00:00April 10th, 2025|Categories: Blog, Events/Tradeshows, Webinar|Tags: PGXpand, ReLIXER|0 Comments

Understanding Polymer Modified Bitumen (PMBs) – Frequently Asked Questions

Paved roadways have been around since ancient Babylonian civilizations began blending asphalt with gravel to accommodate travelers and merchants. In more modern times, roads constructed from asphalt, or bitumen, appeared in the late 1700s as chemists started to better understand the binding qualities of natural asphalt in surface performance. Fast forward to today, and the Earth is [...]

Sustainability in Asphalt with Sripath Additives That Support a Reduced Carbon Footprint

Traditional methods and materials for roadway development may be here to stay, but the advent of sustainably produced additives that may support contractor and department of transportation goals to lower their carbon emissions are much newer to the industry. Newer still is the perspective that asphalt and bitumen additives can be produced with a lower carbon footprint, helping [...]