Particle shape, type and amount of fines, and moisture affecting resilient modulus behavior of unbound aggregates

Debakanta Mishra, Erol Tutumluer, Yuanjie Xiao

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

Abstract

This paper presents the application of Analysis of Variance (ANOVA) approach to study effects of different aggregate properties on the resilient modulus behavior of unbound aggregates. In a recent research project at the University of Illinois, stress-dependent resilient modulus characterization models, in the form proposed for use by the Mechanistic Empirical Pavement Design Guide (MEPDG), were established for three different aggregate types (dolomite, limestone, and uncrushed gravel) using a statistically well-formulated laboratory test matrix. Such a consistent database enabled the evaluation of the model parameter dependence on different aggregate properties, such as particle shape, type and amount of fines, and moisture condition, using the Analysis of Variance (ANOVA) approach. From the statistical analyses, aggregate particle type or angularity was found to have a significant effect on the resilient moduli. At low fines content, the type of fines and moisture state in relation to optimum moisture condition were found to be somewhat insignificant as far as the regression parameter values are concerned. The effect of amount of fines became quite significant especially when the amount of fines was increased.

Original languageEnglish (US)
Title of host publicationPaving Materials and Pavement Analysis - Proceedings of the 2010 GeoShanghai International Conference
Pages279-287
Number of pages9
Edition203 GSP
DOIs
StatePublished - Sep 3 2010
Event2010 GeoShanghai International Conference - Paving Materials and Pavement Analysis - Shanghai, China
Duration: Jun 3 2010Jun 5 2010

Publication series

NameGeotechnical Special Publication
Number203 GSP
ISSN (Print)0895-0563

Other

Other2010 GeoShanghai International Conference - Paving Materials and Pavement Analysis
Country/TerritoryChina
CityShanghai
Period6/3/106/5/10

Keywords

  • Aggregates
  • Moisture
  • Resilient modulus

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Fingerprint

Dive into the research topics of 'Particle shape, type and amount of fines, and moisture affecting resilient modulus behavior of unbound aggregates'. Together they form a unique fingerprint.

Cite this