Abstract
Currently, flow number (FN) is being used for measuring permanent deformation resistance of asphalt mixtures. The provisional AASHTO TP 79–10 test method specifies the requirements of the FN test; however, there are undefined levels of test variables, such as temperature, axial stress, and confinement. Therefore, agreeable FN criteria that can reliably discriminate between various mixtures have not been established yet. As the asphalt industry continues to develop more sophisticated mixtures (Warm Mix, RAP and RAS), the FN value has failed to capture the true complexity of the asphalt mixtures. These shortcomings and the unpredictable testing time of the FN test have affected its usefulness for evaluating high temperature performance of asphalt mixtures. A new test procedure for evaluation of rutting susceptibility of asphalt mixtures is being proposed. The new procedure is conducted at one temperature and multiple stresses on the same replicate in three increments of 500 cycles, which only takes 33 minutes to complete. The property of the test is the permanent strain due to the last cycle of each test increment (Minimum Strain Rate, or MSR). A master curve is developed by plotting the MSR values versus parameter TP, which is a product of Temperature and Pressure. The MSR master curve represents the unit rutting damage (rut per axle) of asphalt mixtures at any stress and temperature and can be used in laboratory for material characterization, mix design verification, ranking of the mixtures, or for pavement design applications to predict rut depth for project climate and design traffic.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Bibliography
AASHTO Designation: TP 79, “Standard Method of Test for Determining the Dynamic Modulus and Flow Number for Hot Mix Asphalt (HMA) Using the Asphalt Mixture Performance Tester,” 2012
AASHTO, Designation T 324, “Standard Method of Test for “Hamburg Wheel-Track Testing of Compacted Hot Mix Asphalt (HMA),” Standard Specifications for Transportation Materials and Methods of Sampling and Testing, 33rd Edition, AASHTO, Washington, DC, 2013
Azari, H. and Mohseni, M., “Incremental Repeated Load Permanent Deformation Testing of Asphalt Mixtures,” Report No. 12–4381, Transportation Research Board 91th Annual Meeting, 2012
Azari, H. and Mohseni, M., “Permanent Deformation Characterization of Asphalt Mixtures Using Incremental Repeated Load Testing”, Accepted for publication in Transportation Research Journal, 2013
Azari, H. and Mohseni, M., “Effect of Short-Term Conditioning and Long-Term Aging on Permanent Deformation Characteristics of Asphalt Mixtures”, AAPT Journal, Volume 82, 2013
Mohseni, A. and H. Azari, “High Temperature Characterization of Highly Modified Asphalt Binders and Mixtures”, Accepted for publication in Transportation Research Journal, 2014
Sotil and Witczak (2005), “Effective Temperature of Asphalt Mixtures for Permanent Deformation Analysis”, AAPT 2005
Mohseni, A. and H. Azari, “Effective Temperature for Permanent Deformation Testing of Asphalt Mixtures”, International Society of Asphalt Pavements. Raleigh, North Carolina, June 2014
Mohseni, Carpenter and D’Angelo, “LTPPBind- Development of SUPERPAVE High-Temperature Performance Grade (PG) Based on Rutting Damage”, AAPT 2005
Barksdale, R.G., “Compressive Stress Pulse Times in Flexible Pavements for Use in Dynamic Testing,” Highway Research Record 335, Highway Research Board, 1971
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 TMS (The Minerals, Metals & Materials Society)
About this paper
Cite this paper
Mohseni, A., Azari, H. (2015). An Innovative Concept for Testing Rutting Susceptibility of Asphalt Mixture. In: Karaman, I., Arróyave, R., Masad, E. (eds) Proceedings of the TMS Middle East — Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015). Springer, Cham. https://doi.org/10.1007/978-3-319-48766-3_7
Download citation
DOI: https://doi.org/10.1007/978-3-319-48766-3_7
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48599-7
Online ISBN: 978-3-319-48766-3
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)