Where Does Elvaloy® RET Improve Pavement Design
The asphalt modifier, DuPont™ Elvaloy® RET, creates a permanently improved bitumen-based binder that delivers long-lasting performance in well-engineered pavements.
Pavement design projects best suited to using DuPont™ Elvaloy® RET typically involve broader temperature swings, heavier wheel loads, or more critical links in the transportation infrastructure. Wherever longer-lasting pavement, or greater smoothness and traction safety is needed (such as at intersections).
Using Elvaloy® RET results in a binder with better-engineered resilience, less stripping, less cracking, and often higher total value from extended service life and reduced or postponed need to disprupt traffic or create business hardships to fix premature pavement failures.
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Smoother, Longer-Lasting Airport RunwaysIn Mexico, Russia and the Czech Republic, runways, taxiways and related pavements have been built using Elvaloy® RET. PMA Used on Runway Pavement at Culiacan Airport Handles International Traffic |
Expressways in Growing EconomiesKey highways around the world are handling commercial and automobile traffic better, longer, thanks to improved binder performance. |
Reducing the Strain on IntersectionsWith Elvaloy® RET, asphalt paving stays smoother and safer at intersections, where the forces that cause rutting are often greatest. |
Resisting Damage from Fuels and Heavy LoadingsElvaloy® RET asphalt modifier creates a better binder at the molecular level, which helps make pavements more resistant to fuels and deformation. |
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| Around the world, engineers and contractors typically want to maximize asphalt properties to meet local conditions. |
Testing Local Asphalt PropertiesBase asphalt properties vary from source to source. Local binder suppliers can pre-test their base asphalt in a lab setting, to determine optimum addition rates for Elvaloy® RET. After modification, the new binder will typically meet higher performance specs. |
Reduced Rutting in Hot ClimatesIndia's GVK Desert Zone Expressway GVK Expressway (Jaipur to Kishangarh) in the State of Rajasthan is located in a high-temperature desert zone, with sections subject to heavy traffic. |
A Key Brasil Transportation Corridor Rodovia Anhangüera (SP-330), a 4-lane toll highway, connects São Paulo with the state's hotter northern areas. |
Reducing Cold CrackingFighting the Freeze in Russia A landing strip, ramp, taxiways and a drainage system were reconstructed using RET at Magadan Airport. |
Challenging Canadian Winters Pavements made with different modifiers were tested side-by-side in Timmins, Ontario, where winter temperatures reached 50-year lows. |
Managing Hot-Cold Range ExtremesOutlasting Others in a High Desert Climate Oregon "high desert" highway sections built in 1991 using Elvaloy® RET outlasted all other modified binder sections, in a service environment marked by heavy truck traffic and severe temperature cycles. |
Montana Maintenance Costs Reduced Project engineers wanted all the temperature range they could get, to fight cracking and rutting with a better-built pavement. |