Evaluation of fatigue resistance of asphalt mixes using Four Point Beam Fatigue and Semi-Circular Bend test methods

M. Barman, R. Ghabchi, D. V. Singh, M. Zaman, S. Commuri, K. Hobson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Fatigue cracking is one of the dominant distresses in flexible pavements. Therefore, evaluation of fatigue resistance of asphalt mixes is immensely important during the mix design stage. Many researchers have proposed different test methods for characterizing fatigue resistance of asphalt mixes, namely, Four Point Beam Fatigue (BF), Semi-Circular Bend (SCB), Indirect Tensile Test (IDT), Cyclic Direct Tension (CDT), and Overlay Tester (OT). However, in reality, fatigue tests are commonly not practiced in many Departments of Transportation (DOTs) in the U.S.A. Many DOTs avoid fatigue tests probably because of the absence of a consensus for an appropriate fatigue test method, non-uniformity in the test procedures, tediousness in calculations and shortage of trained personnel. Some DOTs may not be in a position to adopt a particular fatigue test method because of lack of significant studies covering fatigue resistance of different types of asphalt mixes and test methods. This paper evaluates fatigue resistance of two different mixes: one prepared with an unmodified (PG 64-22) binder and the other with a polymer-modified (PG 76-28) binder.Two different test methods (BF and SCB) were used. As expected, the results from both these methods indicated that the PG 76-28 mix has better fatigue resistance properties. The repeatability of the test results were studied for both test methods. It was found that a better repeatability in the results can be obtained from the SCB test.

Original languageEnglish (US)
Title of host publicationComputer Methods and Recent Advances in Geomechanics - Proc. of the 14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
PublisherTaylor and Francis - Balkema
Pages459-464
Number of pages6
ISBN (Print)9781138001480
DOIs
StatePublished - Jan 1 2015
Event14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014 - Kyoto, Japan
Duration: Sep 22 2014Sep 25 2014

Publication series

NameComputer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014

Other

Other14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
CountryJapan
CityKyoto
Period9/22/149/25/14

Fingerprint Dive into the research topics of 'Evaluation of fatigue resistance of asphalt mixes using Four Point Beam Fatigue and Semi-Circular Bend test methods'. Together they form a unique fingerprint.

Cite this