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Asphalt Modification
Help enable safer and more sustainable solutions in roadways with polymer modified asphalt
Smooth roads are safe roads. Traditional pavements often fail from rutting, stripping, cold cracking, and fatigue cracking, causing damage over time. At Dow, our polymer-modified asphalt offers long-lasting road pavement performance, helping to enable smoother surfaces to prioritize roadway safety across climates.
Roads made with polymer modified asphalt are suitable for heavy transportation loads and can handle more than two times the traffic load1. They are fuel-resistant and offer increased durability by up to 30%2. The benefits are even felt before rubber hits the road. As ELVALOY™ Copolymers for polymer modified asphalt doesn’t need high shear mixing this corresponds to 10% less energy in processing and storing and offers fast application thanks to smooth spreading and easy hand-working.
1Investigation of Low Temperature Cracking in Asphalt Pavements: Cracking in Asphalt Pavements National Pooled Fund Study – Phase II; MnROAD, MnDOT (2010)
2Performance Characterization and Fatigue Damage Prediction of Asphalt Mixtures Containing Polymer Modified Binders and Recycled Plastics
Asphalt Modification
View our entire asphalt modification product catalog to find the best choices for your needs.
ELVALOY™ Reactive Elastomeric Terpolymers (RET)
Across the globe roads need to withstand moisture and temperature cycling, especially in freeze-thaw cycles. Asphaltic cement enhanced by ELVALOY™ Reactive Elastomeric Terpolymers (RET) is shown in lab tests to improve pavement service life in these conditions, due to reduced moisture susceptibility causing better asphalt binder adhesion to aggregate.
Tested and successful results
The U.S. Federal Highway Administration conducted a study to determine the effects of 11 asphalt binders on the moisture sensitivity of mixtures, using a Hamburg Wheel-Tracking Device (Hamburg WTD). The results showed that only the mixture with ELVALOY™ RET performed better than the PG 70-22 control mixture at a 5-percent level of significance.3
On a highway in India side-by-side lane inspection was conducted. Binder made with ELVALOY™ RET asphalt modifier was used alongside an unmodified binder. The side-by-side lanes were observed and photographed years later, showing a visible difference in binder retention—ELVALOY™ RET offering the stronger performance.
3“Understanding the Performance of Modified Asphalt Binders in Mixtures: Evaluation of Moisture Sensitivity” (FHWA-RD-02-029) by Kevin D. Stuart, John S. Youtcheff and Walaa S. Mowager
ELVALOY™ RET PMA Production Guide
Explore our offerings to help deliver long-lasting road pavement performance.
ELVALOY™ RET Lab Screening Guide
Guidelines for initial screening of ELVALOY ™ RET in asphalt RET and SBS in this blending and testing comparison.
MA using ELVALOY™ RET
Equipment and processing suggestions for manufacturing PMA using ELVALOY™ RET.
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