Journal Published Online: 01 July 2006
Volume 35, Issue 1

Effect of Antistrip Additives on Surface Free Energy Characteristics of Asphalt Binders for Moisture-Induced Damage Potential

CODEN: JTEVAB

Abstract

In this study, the effect of antistrip additives on asphalt binders was evaluated by both laboratory tests and a proposed chemical model of asphalt binder based on the surface free energy characteristics. Two performance graded asphalt binders, namely, PG 64-22 and PG 70-28 and two amine-based liquid antistrip additives, namely, AD-Here HP Plus and Redicote E-6 were evaluated at different percentages (0.25 %, 0.75 %, and 1.5 %). It was found that 1.5 %AD-Here HP Plus and 1.5 % Redicote E-6 increased the total SFE of PG 64-22 by 67 % and 208 %, respectively. Also, the acid components of PG 64-22 and PG 70-28 are 2.9 dyne/cm and 2.5 dyne/cm, respectively, whereas, the corresponding base components are 0.4 dyne/cm for both. With the addition of 1.5 %. Redicote E-6 in PG 64-22, the acid component of the binder reduced by 92 % and the base component of the binder increased by 1141 %.

Author Information

Wasiuddin, NM
School of Civil Engineering and Environmental Science, University of Oklahoma, Norman, OK
Fogle, CM
School of Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, OK
Zaman, MM
College of Engineering, University of Oklahoma, OK
O'Rear, EA
School of Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, OK
Pages: 9
Price: $25.00
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Stock #: JTE100290
ISSN: 0090-3973
DOI: 10.1520/JTE100290