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ELVALOY™ RET vs. SBS Modified Asphalt

Performance and productivity of ELVALOY™ RET

ELVALOY™ Reactive Elastomeric Terpolymer (RET) helps transport the people and things important to us. Being the best isn’t just a priority, but a necessity. Extensive test data is available from third parties, including government agencies, industry groups and universities, demonstrating that ELVALOY™ RET has equivalent or improved performance vs. styrene butadiene styrene (SBS) modified asphalt at lower dosages.

ELVALOY™ RET slows down pavement deformation and resists damage from extreme temperatures and moisture, making it an investment for the long-term.


Compare the Polymers

Differences between ELVALOY™ RET and SBS begin with basic polymer chemistry and handling properties.

ELVALOY™ RET Styrene Butadiene Styrene (SBS)
Specifically engineered by Dow for asphalt modification Developed in the 1950s as a replacement for rubber
Storage-stability, because ELVALOY™ RET chemically links with asphalt Susceptible to separation from the asphalt
Can be winter-filled and stored for reheating and later use Not recommended for winter-filling
Only low shear mixing is necessary High-shear mill required for mixing at increased capital and maintenance costs
Delivered as a free-flowing pellet which results in easy handling Not as easily handled

Polymer Modified Asphalt:
Get in the Mix with ELVALOY™ RET

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ELVALOY™ RET vs. SBS:
Polymer Modified Asphalt Blending & Testing

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Compare the Processing

Terminal operators and paving contractors can also benefit from proven ELVALOY™ RET asphalt modifier technology.

ELVALOY™ RET Styrene Butadiene Styrene (SBS)
Lower processing, storage, mixing, and compaction temperatures Higher storage, mixing and compaction temperatures
Less energy use in mix plant More energy use in the mix plant
Less likely to have smoking issues More likely to have emissions (smoking) from the mix plant if extra additives are applied
Faster compaction to meet required densities which requires less equipment and more rapid opening to traffic Longer compaction times, and long lane closures; harder to construct due to ever-increasing night and weekend paving windows
Lower processing temperatures, resulting in reduced emissions and fewer odor complaints More likely to result in complaints to authorities from workers and the public about fumes
Fewer complaints from job site neighbors More likely to have fumes at the paving train due to higher temperatures
Increased workability for paving crews who quickly realize ELVALOY™ RET paves like neat asphalt Harder for crews without PMA experience to use; Can cause significant paving issues, particularly for highly-modified asphalt mixes

*asphalt is defined as bitumen or binder

Contact us to learn more.