DuPont™ Elvaloy® RET fights stripping
Asphalt binder adhesion to aggregate is a key requirement for sustained pavement life. Factors affecting adhesion include moisture and temperature cycling, especially freeze-thaw cycles. Properly formulated binders made with resilient. moisture-resistant Elvaloy® RET have been shown to prevent stripping in lab studies, field trials, and real life motorways.
The Statz Freeze-Thaw Cycle Test
Pioneering DuPont scientist Bob Statz compared binders made with and without RET, using an oven and a freezer. Results showed clear differences in binder adhesion after repeated cycling.
» Compare binders, side by side
FHWA Study Results
Elvaloy® RET modifier was among the materials tested in a broad binder study by the U.S. Federal Highway Administration. Stripping resistance was strong for the reactive polymer.
» Federal report findings
In India, Side-by-Side Lane Inspection
On a highway in India, binder made with DuPont™ Elvaloy® RET asphalt modifier was used alongside an unmodified binder. Lanes were photographed years later, and showed a visible difference in binder retention.
» Lanes studied, side by side
Other Technical References
Scientific testing and real roads confirm superior Elvaloy® RET performance.
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