Characterizing aggregate permanent deformation behavior based on types and amounts of fines

D. Mishra, Erol Tutumluer, J. Kern, A. Butt

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

Abstract

Construction of a working platform is often needed on soft, unstable soils to provide sufficient stability and adequate support for equipment mobility during paving operations without developing excessive rutting or sinkage of the equipment. One method of verifying the adequacy of such a layer is through conducting permanent deformation tests in the laboratory. This paper presents permanent deformation test results from an ongoing research project at the University of Illinois aimed at characterizing strength, stiffness, and deformation behavior of three different aggregate types commonly used in Illinois for subgrade replacement and subbase. Aggregate gradations were carefully engineered in the laboratory to study the effects of increasing amounts of both plastic and non-plastic type fines on permanent deformation behavior. Aggregate type or angularity, plasticity of fines and moisture conditions in relation to optimum water content were found to significantly affect the permanent deformation behavior.

Original languageEnglish (US)
Title of host publicationBearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields
Pages237-246
Number of pages10
StatePublished - Dec 1 2009
Event8th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCR2A'09 - Champaign, IL, United States
Duration: Jun 29 2009Jul 2 2009

Publication series

NameBearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields
Volume1

Other

Other8th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCR2A'09
CountryUnited States
CityChampaign, IL
Period6/29/097/2/09

ASJC Scopus subject areas

  • Civil and Structural Engineering

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  • Cite this

    Mishra, D., Tutumluer, E., Kern, J., & Butt, A. (2009). Characterizing aggregate permanent deformation behavior based on types and amounts of fines. In Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields (pp. 237-246). (Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields; Vol. 1).