Tests confirm less rutting with RET-modified binders
Polymer-modified asphalt (PMA) is proving reliable as a way to reduce pavement rutting. From its earliest use in Oregon 1991, to the paving projects being undertaken now around the world, RET is proving to be a top performer, and an easy product for asphalt producers to use, to meet higher performance specs. The following studies compare Elvaloy® RET and other choices, for rut resistance.
Cumulative Strain Tests Compare EVA, SBS and Elvaloy®
A Citgo Savannah 67-22 base asphalt and limestone aggregate were studied to determine the impact of four different polymer additives.
» See findings
U.S. Federal Highway Administration Tests 11 Binders for Rut Resistance
Eleven asphalt binders including RET-modified (Elvaloy®) were studied with diabase aggregate, using wheel testing.
» See results
Modified Binder Rheology and Wheel Tracking Studied in Mexico
Mexican researchers compared rutting with four modification technologies: RET-, EVA-, and SBS-modified, and air blown.
» Includes Spanish wheel tracking
Advancing Asphalt Test Methods for Rutting and Fatigue
The coauthors describe advances from traditional Superpave elastic recovery, toughness and tenacity tests for predicting the durability of polymer-modified asphalt mixes.
» Improved tests
Accumulated Strain to Failure: RET vs SBS and Others
Mathy Technology & Engineering Services, Inc., tested and compared asphalt binder and mix properties using a high-quality granite aggregate.
» Test results
RET versus Crumb Rubber for High-Temperature Rut Resistance
Binder and mix properties related to rutting were studied for an RET-modified binder and three other binders with different levels of crumb rubber blend.
» Includes cost calculation
Other Technical References
Scientific testing and real roads confirm superior Elvaloy® RET performance.
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