Sustainable Asphalt Binder & Modifier

The Problem

Conventional asphalt modifiers are often petroleum-based sources, contributing to greenhouse gas emissions, environmental pollution, and reliance on non-renewable resources. At the same time, aging pavement and environmental stressors like extreme temperatures and heavy traffic accelerate rutting and cracking, incurring costly maintenance cycles. Existing recycling approaches struggle with compatibility, consistency in performance, and scalability in asphalt applications. There is a clear need for innovative modifier technologies that integrate seamlessly into current manufacturing methods while significantly extending the lifespan of roadways. Addressing these issues requires a next-generation, cost-effective, and eco-conscious asphalt solution that delivers both superior performance and measurable environmental benefits.

The Solution

Our breakthrough suite of sustainable technologies blend the best of recycled innovation and renewable bio-based engineering.

Renewable Biochar Asphalt Binder (US Patent No. US9481793B2) ID:14061

This technology produces biochar from feedstocks, such as grasses, that is directly compatible with conventional asphalt manufacturing methods. The biochar replaces traditional binder materials such as polymers or activated carbon. Biochar-modified asphalts have higher resistance and strength while being economically and ecologically more conscious.

Recycled Plastics & Crumb Rubber Asphalt Modifier (pending) ID:22059

This technology replaces common petroleum-based additives with a commingled plastic and rubber material to provide a more durable asphalt. The plastic and rubber materials are repurposed from plastic and automotive tire waste streams. The new modifier fits standard asphalt manufacturing processes and gives new life to our waste products.

Additional Information:

UT Team Helps Turn Plastic into Asphalt Modifier

Benefits

Benefit
Technologies are compatible with standard manufacturing methods
Replaces petroleum-based products with more renewable and abundant alternatives
Better asphalts with greater fatigue, cracking, and rutting resistance

More Information

Derek Eitzmann
Assistant Technology Manager, Multi Campus Office
865-974-1882 | deitzman@tennessee.edu

UTRF Reference ID: 22059 & 14061
Patent Status: US9481793B2

Innovators

Baoshan Huang

Edwin G. Burdette Professor Department of Civil and Environmental Engineering

Biography Baoshan Huang joined the faculty of the Department of Civil and Environmental Engineering at the University of Tennessee in January 2002. Over the last fifteen years of his professional career, Huang has secured over 6.5 million dollars of research funding to support his research activities and published over 100 peer reviewed journal papers. He is registered as a professional engineer in Louisiana. His research interests include infrastructural materials, pavement engineering, and geotechnical engineering.