DuPont™ Elvaloy® RET binder modifiers providelasting performance to roads around the world.

The binder modifier specially designed to give you the best performance and value while minimizing safety hazards from road deterioration.

OVER 20 YEARS OF PROVEN PERFORMANCEInnovators have been using Elvaloy® RET in their roads around the world since 1991. The unique properties of Elvaloy® RET make it the perfect material choice to address climate, performance, and delivery challenges. No matter what the conditions are, Elvaloy® RET delivers excellent performance and durability to roads everywhere.

EXCELLENT PERFORMANCE • Elvaloy® RET provides exceptional rutting resistance and hot/cold-

temperature performance.• Elvaloy® RET offers great fatigue cracking protection.• Elvaloy® RET has inherent stripping resistance.• Elvaloy® RET meets the requirements of fuel resistance for binder mixes.

EFFICIENT PROCESSING• With a short mixing time, Elvaloy® RET-modified binder can be produced on

demand, based on your needs.• Elvaloy® RET can be compacted and mixed at lower temperatures than

SBS-modified binder.• Elvaloy® RET can be easily blended into the hot binder – no high shear mill

required. • Elvaloy® RET is a stable product and the modified binder can be stored for

several months, eliminating any potential wastage of polymer.• Elvaloy® RET requires lower storage temperature and lower energy usage

than SBS.

MEETS OR EXCEEDS SPECIFICATIONS• Elvaloy® RET allows you to cost-effectively meet empirical and performance

specifications.

BETTER VALUE• Elvaloy® RET requires lower capital investment than competitive alternatives.• Elvaloy® RET is not susceptible to pricing swings from butadiene availability like SBS.

DUPONT™ ELVALOY® RET BINDER MODIFIERS

DUPONT™ ELVALOY® RET PERFORMS BETTER THAN OTHER BINDER MODIFIERS IN THE FOLLOWING TESTS:

LOW TEMPERATURE PERFORMANCE TESTThermal cracks in pavement occur when temperature-related forces of expansion and contraction exceed a binder’s ability to stretch or compress enough to conform to these movements. Roads modified with Elvaloy® RET have high resistance to changes in temperatures. The binder modified with Elvaloy® RET displayed the best performance in extreme temperatures among several modifiers.

-20

-22

-24

-26

-28

-30

-32

-34

Elvaloy®

Tem

pera

ture

(°C

)

Low Temperature Performance (Binder)

X-SBS SBS EVA PG64-28 PG70-22

BBR Tcr (RTFO/PAV)TSRST °C (2h at 135 °C)

SYNERGY PERMANENT CHEMICAL BOND WITH THE BINDER

EXTREME CLIMATES HIGH RESISTANCE TO DIFFERENT TEMPERATURES

DURABILITY MAXIMUM LIFE SPAN AGAINST RUTTING, FATIGUE AND HIGH TRAFFIC

SCIENCE INNOVATION FOR BINDER’S BEST PERFORMANCE

Source: Federal Highway Administration – FHWA-RD-02/074 10/2010

Figure 1: Low Temperature Performance of Binder Modified with Different Modifiers

DUPONT™ ELVALOY® RET BINDER MODIFIERS

HAMBURG RUTTING TESTRepeated heavy loads cause pavements to permanently deform over time, forming unsafe ruts in the road. The Hamburg rutting test stimulates the dynamic of heavy and repeating traffic loads to determine the pavement’s performance after a specified number of passes. The binder modified with Elvaloy® RET displayed the greatest resistance to rutting in the Hamburg rutting test.

MULTIPLE STRESS CREEP RECOVERY TESTThe Multiple Stress Creep Recovery Test (MSCR) predicts the pavement’s performance to rutting at different temperatures and stress levels. Binder modified with Elvaloy® RET displayed the greatest resistance to rut formation in even extreme temperatures.

Rutting - Hamburg WTD - (under water 58 °C) diabase mix, 7 % void

0

5

10

15

20

25 0 2 000 4 000 6 000 8 000 10 000 12 000 14 000 16 000 18 000 20 000

Rut

Dep

th (m

m)

Rutting Cycle

Elvaloy® PG70

X-SBS PG70

SBS PG70

PG64

Figure 2: Hamburg Rutting TestHamburg WTD - (under water 58 °C) diabase mix, 7 % void

Source: Understanding the Performance of Modified Asphalt Binders in Mixtures; Evaluation of Moisture Sensitivity (NCHRP) Project 90-07

Figure 3: Multiple Stress Creep Recovery Test - Stress vs. Temperature at 3.2kPa

Source: MSCR Test & Method Specification – Federal Highway Administration – John D’Angelo - 2008

0.0

0.5

1.0

1.5

2.0

2.5

3.055 60 65 70 75 80

Jnr (

kPa-

1)

Elvaloy® 70-28

SBS 70-28

PG70-22

PG58-28

Temperature (° C)

Conventional Binder

Binder Modified with Elvaloy® RET

Hamburg Rutting Test (visual results)

0

10

20

30

40

50

60

70

80

90

00.511.522.533.54

Rec

over

y (%

)

Jnr (kPa-1)

Elvaloy® 76-28 (70V, 76H, 82S)

Elvaloy® 70-28 (64V, 70H, 76S)

SBS 76-22 (70V, 76H, 82S)

SBS 70-28 (64V, 70S)

SBR 70-22 (58V, 64H, 70S)

EVHHvyStandard

Source: MSCR Test & Method Specification – Federal Highway Administration – John D’Angelo - 2008

Figure 4: Multiple Stress Creep Recovery Test - Recovery vs. Stress at 3.2kPa

AustraliaMexico

AmericasDuPont Industrial Polymers Wilmington, Delaware, U.S.A. Telephone +1 302 774 1000Toll -free (US) 800 628 6208

DuPont do Brasil, S.A.Barueri, Sao Paulo, BrazilTelephone +55 11 4166 8000

Asia PacificDuPont China Holding Co., Ltd.399 Keyuan Road, Bldg. 11Zhangjiang Hi-Tech ParkPudong New District, ShanghaiP.R. China (Postcode: 201203)Telephone +86-21-3862-2888

Europe / Middle East / AfricaDuPont de Nemours Int’l. S.A.Geneva, SwitzerlandTelephone +41 22 717 51 11

DuPont Global Paving CenterPekarska 14/62815500 PragueCzech RepublicTelephone +42 0257414111

The technical data contained herein are guides to the use of DuPont resins. The advice contained herein is based upon tests and information believed to be reliable, but users should not rely upon it absolutely for specific applications because performance properties will vary with processing conditions. It is given and accepted at user’s risk and confirmation of its validity and suitability in particular cases should be obtained independently. The DuPont Company makes no guarantees of results and assumes no obligation or liability in connection with its advice. This publication is not to be taken as a license to operate under, or recommendation to infringe, any patents.

Copyright © 2015 DuPont. All rights reserved. The DuPont Oval Logo, DuPont, and Elvaloy® are registered trademarks or trademarks of E. I. du Pont de Nemours and Company or its affiliates. Doc. Reference No. K27596

CONTACT US

FIND OUT MORE AT WWW.ASPHALT.DUPONT.COM

WE WORK COLLABORATIVELY TO DELIVER SOLUTIONS THAT MEET YOUR NEEDS.With over 200 years of continued innovation in science and technology, we bring our expertise to the paving industry to invent new products that optimize performance. Our DuPont Global Paving Center provides access to top scientists and state-of-the-art equipment to enable advanced testing and tailor-made support for customers with diverse requirements all across the world.

We estimate that more than 150,000 kilometers of roads around the world are paved with DuPont™ Elvaloy® RET, including countries such as:

Bulgaria India CanadaColombia

United States Ecuador

Saudi Arabia

LET US HELP YOU PAVE THE WAY TO SUCCESS.

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