Blog Archives

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Sripath develops, manufactures, and markets innovative additives to enhance the performance of bitumen, asphalt, and polymer modified bitumen. With solutions spanning rejuvenators, oils, and polymers for both paving and roofing applications, Sripath remains an active leader and innovator across the bitumen and asphalt industries. Our blog serves as a repository for a variety of materials ranging from published technical papers to event archives and press releases, providing a centralized place for customers, partners, and other experts to learn more about Sripath’s latest offerings, industry opinions, product developments, and general resources. Explore content through category and topic lists using the side navigation, search based on keywords, or scroll through content in order of recency.

PGXpand®: The Road to Better Bitumen Performance

Innovation is often the result of years of asking the right questions, testing assumptions, and refining ideas until chemistry and application finally align. As Sripath Technologies celebrates 20 years of innovation, PGXpand® stands as a clear example of this philosophy in action. PGXpand was not developed to simply replicate what existing polymers already did for bitumen. Instead, its development began with a more fundamental challenge: [...]

Sripath Asphalt Additives and Proven Durability in Roadway and Roofing Applications

In modern asphalt mix design, the use of high-quality asphalt additives has become essential to improve performance, sustainability, and long-term durability. Whether the goal is to incorporate higher amounts of Reclaimed Asphalt Pavement (RAP), reduce production and compaction temperatures, or optimize polymer-modified bitumen (PMB) blends, additives can help producers achieve these objectives without compromising pavement life. Sripath has developed a suite of innovative additives including ReLIXER®, PGXpand®, [...]

Breaking the 30% RAP Barrier and Achieving High-RAP Content in Asphalt Roadways

The push to increase reclaimed asphalt pavement (RAP) usage has moved from purely a sustainability talking point to a strategic priority for agencies and producers worldwide. Rising material costs, tightening environmental regulations, and growing pressure to reduce embodied carbon have made higher RAP contents increasingly attractive. And yet, despite these incentives, many departments of transportation and asphalt producers continue to cap RAP usage between 20-30%. [...]

How PGXpand is Evolving Polymer Modified Asphalt

Polymer modified asphalt (PMA), or polymer modified bitumen, has long been used to improve pavement durability under increasing traffic loads, climate variability, and performance-based specifications. Traditionally, PMA has relied on elastomeric or plastomeric polymers to enhance specific properties such as rutting resistance and durability. While effective, these approaches often introduce challenges related to storage stability, viscosity control, energy consumption, and cost. As the asphalt industry continues to prioritize sustainability alongside long-term [...]