Using Critical State Theory for Modelling of Asphalt Mix Compaction

Henny L. ter Huerne ； Martin F. A. M. van Maarseveen ； Andre A. A. Molenaar ； Martin F. C. van de Ven

《International Journal of Pavement Research and Technology》 7卷2期 (2014/03) Pp. 83-92

https://doi.org/10.6135/ijprt.org.tw/2014.7(2).83

並列摘要

This paper focuses on modeling of Hot Mix Asphalt (HMA) material behavior during compaction. During compaction the particle configuration inside the HMA is changing from a relatively loose into a denser one while the bitumen is fluid. Initially particle reorientation is easily possible due to the HMA's loose configuration. The material behavior predominantly falls in the elastic-plastic domain. Critical state theory from soil mechanics is proposed as a basis for modeling this behavior. An extensive laboratory testing program was undertaken using a modified Hveem stabilometer as a tool for parameterization. The program included: different mixtures, different stages of mixture density and different material temperatures. In this paper, we discuss how well the critical state principles suit HMA behavior, and what the critical state material parameters are for HMA with respect to different material temperatures, different compaction stages and different stress states. We show that HMA compaction behavior can be modeled using the critical state theory and that material behavior is bi-linear in the p':q stress space.

並列關鍵字

Asphalt ； Compaction ； Critical state theory ； Hveem stabilometer ； Material parameterization ； Pavement

參考文獻

Yao, H., Liu, Y., You, Z., Li, L. and Goh, S.W. (2012). Discrete Element Simulation of Bending beam Rheometer Tests for Asphalt Binder. International Journal of Pavement Research and Technology, 5(3), pp. 161-168.

Hassan, N.A., Airey, G.D., Khan, R. and Collop, A.C. (2012). Nondestructive Characterisation of the Effect of Asphalt Mixture Compaction on Aggregate Orientation and Segregation Using X-ray Computed Tomography. International Journal of Pavement Research and Technology, 5(2), pp. 84-92.

Xia, K. and Pan, T. (2011). Understanding Vibratory Asphalt Compaction by Numerical Simulation. International Journal of Pavement Research and Technology, 4(3), pp. 185-193.

Schofield, A.N. and Wroth, C.P. (1968). Critical State Soil Mechanics. McCraw-Hill, London, United Kingdom.

Stroup-Gardiner, M. (2000). Identifying segregation in hot mix asphalt pavements using rolling nuclear gage measurements and infrared imaging. Journal of Testing and Evaluation, 28(2), pp. 121-130.