DuPont Home
DuPont(tm) Elvaloy(r) RET

Improving Asphalt Properties by Geography or Climate Range

Around the world, engineers and contractors typically want to maximize asphalt properties to meet local conditions. 

asphalt properties testing

Testing Local Asphalt Properties

Base 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.  » Testing local asphalt
Reduced Rutting in Hot Climates
hot climates
India'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. » See project details
A Key Brasil Transportation Corridor
Rodovia Anhangüera (SP-330), a 4-lane toll highway, connects São Paulo with the state's hotter northern areas. » Avoiding ruts
Reducing Cold Cracking
Fighting the Freeze in Russia
A landing strip, ramp, taxiways and a drainage system were reconstructed using RET at Magadan airport. » Allows heavier aircraft
Challenging Canadian Winters
Pavements made with different modifiers were tested side-by-side in Timmins, Ontario, where winter temperatures reached 50-year lows. » No cracks in RET-modified sections
Managing Hot-Cold Range Extremes
Outlasting 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. » Hard-working resilience
Montana Maintenance Costs Reduced
Project engineers wanted all the temperature range they could get, to fight cracking and rutting with a better-built pavement.  » RET crack-free
asphalt paving additive projects
It's In the Chemistry

Improved asphalt properties with Elvaloy® RET are being reported in numerous technical studies