Quantifying effects of lime stabilized subgrade on conventional flexible pavement responses

O. Pekcan, Erol Tutumluer, M. R. Thompson

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

Abstract

Lime stabilization is commonly used to improve weak natural subgrade in Illinois. ILLI-PAVE nonlinear finite element (FE) program was utilized in this study as an advanced pavement structural analysis tool to quantify the improvement from the lime stabilized soil layer in conventional flexible pavements. Using ILLI-PAVE, many combinations of typical Illinois highway pavement layer thicknesses and material properties were analyzed to establish a database of surface deflections and critical pavement responses. Using this database, Artificial Neural Network (ANN) structural models were trained successfully as forward analysis tools, surrogate to ILLI-PAVE, to be used in the backcalculation of the Falling Weight Deflectometer data. The ANN model predictions were on the average within 1% of the ILLI-PAVE FE results. The developed ANN models were therefore quite accurate for the rapid analyses of conventional flexible pavements built on lime stabilized soils replicating the ILLI-PAVE results.

Original languageEnglish (US)
Title of host publicationAdvances in Transportation Geotechnics - Proceedings of the 1st International Conference on Transportation Geotechnics
Pages529-534
Number of pages6
StatePublished - Dec 1 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
CountryUnited Kingdom
CityNottingham
Period8/25/088/27/08

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Transportation

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  • Cite this

    Pekcan, O., Tutumluer, E., & Thompson, M. R. (2008). Quantifying effects of lime stabilized subgrade on conventional flexible pavement responses. In Advances in Transportation Geotechnics - Proceedings of the 1st International Conference on Transportation Geotechnics (pp. 529-534). (Advances in Transportation Geotechnics - Proceedings of the 1st International Conference on Transportation Geotechnics).