Effect of aggregate packing on open AC: Micromechanical analysis

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Abstract

Within pavement engineering community, Open Graded (OG) mixes are regarded as mixes capable of reducing noise and improving wet skid resistance. Due to the formation of interconnected aggregate network, aggregate packing plays an important role in the overall response of OG mixes. However, some of the models developed in the past do not consider the effect of aggregate packing in their predictions which leads to unreliable predicted results. Thus, it is important to understand the contribution of packed aggregates in the prediction of mechanical properties of OG mixes. In this paper, a procedure for obtaining the stiffness of packed aggregates in OG mixes was proposed by mean of micromechanics (the Mori-Tanaka model) and it was verified on the basis of laboratory tests. The results showed that the calculated stiffness of packed aggregates is frequency dependent which needs to be considered in the prediction of mechanical properties of OG mixes.
Original languageEnglish
Title of host publicationAdvances in Materials and Pavement Prediction: Papers from the International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2018), April 16-18, 2018, Doha, Qatar
EditorsEyad Masad, Amit Bhasin, Tom Scarpas, Ilaria Menapace, Anupam Kumar
PublisherCRC Press
Chapter32
Number of pages5
ISBN (Electronic)9780429855801
ISBN (Print)9781138313095
DOIs
Publication statusPublished - 2018
EventAM3P 2018: International Conference on Advances in Materials and Pavement Performance Prediction - Doha, Qatar
Duration: 16 Apr 201818 Apr 2018
Conference number: 5
http://www.am3p.com/

Conference

ConferenceAM3P 2018: International Conference on Advances in Materials and Pavement Performance Prediction
Abbreviated titleAM3P 2018
CountryQatar
City Doha
Period16/04/1818/04/18
OtherInspired from the legacy of the previous four 3DFEM conferences, AM3P continues the same theme i.e. models, experimental methods to measure properties and determine model parameters, implementation and utilization for material or pavement performance prediction.
Internet address

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    Zhang, H., Anupam, K., Scarpas, A., & Kasbergen, C. (2018). Effect of aggregate packing on open AC: Micromechanical analysis. In E. Masad, A. Bhasin, T. Scarpas, I. Menapace, & A. Kumar (Eds.), Advances in Materials and Pavement Prediction: Papers from the International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2018), April 16-18, 2018, Doha, Qatar CRC Press. https://doi.org/10.1201/9780429457791