Types and amounts of fines affecting aggregate behaviour

D. Mishra, E. Tutumluer, A. 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 and paving operations without developing excessive rutting. Subgrade removal and aggregate replacement for cover is one of the most commonly used options for treating soft, unstable soils. Aggregate type and quality are important factors governing the required treatment/replacement thickness. This paper presents preliminary laboratory findings from an ongoing research project at the University of Illinois aimed to characterize behavior of three types of aggregates commonly used in Illinois for subgrade replacement and subbase. Samples were prepared with consistent engineered gradations, and their moisture-density and strength behavior were studied at different amount of fines, as well as with different types of fines. Plastic fines were found to reduce aggregate strength significantly, as compared to the same amount of non-plastic fines.

Original languageEnglish (US)
Title of host publicationAdvances in Transportation Geotechnics - Proceedings of the 1st International Conference on Transportation Geotechnics
Pages213-218
Number of pages6
StatePublished - 2008
Event1st International Conference on Transportation Geotechnics, ICTG-1 - Nottingham, United Kingdom
Duration: Aug 25 2008Aug 27 2008

Publication series

NameAdvances in Transportation Geotechnics - Proceedings of the 1st International Conference on Transportation Geotechnics

Other

Other1st International Conference on Transportation Geotechnics, ICTG-1
Country/TerritoryUnited Kingdom
CityNottingham
Period8/25/088/27/08

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Transportation

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