Determining Fatigue Life of Hot Mix Asphalt at Low Strain Using Beam Fatigue Test at 25 Hz Loading Frequency

Document Type : Scientific - Research

Abstract

To prevent fatigue failure on long-life asphalt pavement, it is important to consider endurance limit in design. The endurance limit is defined as the tensile strain below which no fracture or fatigue damage occurs. Review of the literature shows that it is very time consuming to conduct fatigue tests at low strain. One of the major reasons for increasing of test time is self-healing. Beam fatigue tests results at low strain show that the stiffness and dissipated energy remains almost constant with increasing the repeated load number in the early part of test
In this research study, to reduce the testing time and self-healing effect, it was proposed that the tests be conducted using loading at 25 Hz. Results showed that there is good correlation between fatigue lives based on loading at 25 Hz and 10 Hz. According to the tests results, two relationships were developed between fatigue lives based on loading at 10 Hz and 25Hz for normal and low strain.

Keywords


AASHTO T321 (2007) "Method for determining the fatigue Life of Compacted Hot Mix Asphalt (HMA) Subjected to Repeated Flexural Bending", AASHTO Standards, 11 pp.
 
AUSTROADS (2009) "Asphalt fatigue endurance limit", AUSTROADS Technical Report, AP-T131/09, ISBN 978-1-921551-73-4.
 
Carpenter, S. H., Ghuzlan, K.A. and Shen, S.  (2003) "Fatigue endurance limit for highway and airport pavement", Transportation Research Record (TRR): Journal of the Transportation Research Board, No. 1832, TRB, National Research Council, Washington D.C, pp.131-138.
 
Carpenter, S. H. and Shen, S. (2006) "A dissipated energy approach to study HMA healing in fatigue", In Transportation Research Record (TRR): Journal of the
Transportation Research Board, No.1970, TRB, National Research Council, Washington D. C., pp. 178-185.
 
Monismith, C. L., Epps, J. A., Kasianchuk, D. A. and Mclean, D.B (1970) "Asphalt mixture  behavior on repeated flexure", Report No. TE 70-5, Institute of Transportation and Traffic Engineering, University of California, Berkeley, USA.
 
 
Newcomb D. E., Buncher, M. and Huddleston, I. J. (2001) "Concepts of perpetual pavements", Perpetual Bituminous Pavements, Transportation Research Circular 503, Transportation Research Board, Washington, DC, 2001, pp. 4-11.
 
Pais J. C., Pereira P. A. A., Minhoto, M. J. C., Fontes L. P. T. L., Kumar D.S.N.V.A. and Silva B.T.A. (2009) "Application of plateau value to predict fatigue life", 2nd Workshop on Four Point Bending, University of Minho.   pp. 59-68.
 
Prowell, B. D and Brown, E. R. (2006) "Methods for determining the endurance limit using beam fatigue tests", National Center for Asphalt Technology, International Conference on Perpetual Pavement, Ohio, September 13-15, 16 pp.
 
Shen, S. and Carpenter, S. (2005) "Application of the dissipated energy concept in fatigue endurance limit testing", Transportation Research Record: Journal of the Transportation Research Board, Volume 1929,  DOI 10.3141/1929-20, pp. 165-173.
 
Shen, S. and Carpenter, S. H. (2007) "Dissipated energy concepts for HMA performance: Fatigue and healing", Technical Report of Research, Department of Civil and Environmental Engineering, University of Illinois, March, 240 pp.
 
Zeiada, W., Souliman, M., Kaloush, K. and Mamlouk, M. (2013). "Endurance limit for HMA based on healing concept using uniaxial tension-compression fatigue test". Journal of Materials in Civil Engineering, 10.1061/(ASCE) MT.1943-5533.0000917.