Applied stress states in relation to strength controlling unbound aggregate base permanent deformation accumulation

Y. H. Byun, B. Feng, I. Qamhia, E. Tutumluer

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

Abstract

An improved understanding of pavement permanent deformation accumulation and factors contributing to the base course rutting behavior is important for pavement design, construction, maintenance and modeling. This paper provides laboratory test results and predictive rutting model analyses from an ongoing research project at the University of Illinois at Urbana-Champaign (UIUC). Moisture-density, monotonic triaxial shear and repeated-load triaxial tests were conducted on four aggregate materials having different gradations. A rutting model developed at UIUC predicts permanent strains as a function of number of load repetitions, applied deviator stress, and mobilized Shear Stress (to strength) Ratio (SSR). The model was developed based on the permanent strain trends measured on aggregate specimens from laboratory tests. Applied stress states and SSR levels were found to be the most important in controlling the development of permanent deformation at typically the most critical low confinement conditions.

Original languageEnglish (US)
Title of host publicationAdvances in Materials and Pavement Performance Prediction - Proceedings of the International AM3P Conference, 2018
EditorsEyad Masad, Ilaria Menapace, Amit Bhasin, Tom Scarpas, Anupam Kumar
PublisherCRC Press/Balkema
Pages497-500
Number of pages4
ISBN (Print)9781138313095
StatePublished - Jan 1 2018
EventInternational Conference on Advances in Materials and Pavement Performance Prediction, AM3P 2018 - Doha, Qatar
Duration: Apr 16 2018Apr 18 2018

Publication series

NameAdvances in Materials and Pavement Performance Prediction - Proceedings of the International AM3P Conference, 2018

Conference

ConferenceInternational Conference on Advances in Materials and Pavement Performance Prediction, AM3P 2018
CountryQatar
CityDoha
Period4/16/184/18/18

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Materials Science(all)

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  • Cite this

    Byun, Y. H., Feng, B., Qamhia, I., & Tutumluer, E. (2018). Applied stress states in relation to strength controlling unbound aggregate base permanent deformation accumulation. In E. Masad, I. Menapace, A. Bhasin, T. Scarpas, & A. Kumar (Eds.), Advances in Materials and Pavement Performance Prediction - Proceedings of the International AM3P Conference, 2018 (pp. 497-500). (Advances in Materials and Pavement Performance Prediction - Proceedings of the International AM3P Conference, 2018). CRC Press/Balkema.