Pullout resistance factors for steel reinforcements used in TxDOT MSE walls

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

This paper presents results from an extensive laboratory program of pullout testing of steel reinforcements used for Mechanically Stabilized Earth (MSE) walls constructed in Texas. Results focus on evaluation of pullout resistance factors for sandy backfill and MSE reinforcement combinations used by the Texas Department of Transportation (TxDOT). A unique aspect of this study is that this project uses Texas Tech University's large-scale MSE Test Box, one of the largest such devices in the world, with dimensions of 3.7m x by 3.7m x 1.2m (12ft x 12ft x 4ft) and an applied overburden capacity of 12.2m (40ft) of backfill. This test box facilitates pullout testing at a scale not unlike typical field construction. Results consist of pullout resistance factors for both ribbed strip and welded grid reinforcements for a variety of test variables including overburden pressure, reinforcement length, level of compaction, grid wire size, and grid geometry. We evaluate the data within the context of published AASHTO design guidance for inextensible MSE reinforcements.

Original languageEnglish
Title of host publicationGeoCongress 2013
Subtitle of host publicationStability and Performance of Slopes and Embankments III - Proceedings of the 2013 Congress
PublisherAmerican Society of Civil Engineers (ASCE)
Pages44-53
Number of pages10
Edition231 GSP
ISBN (Print)9780784412787
DOIs
StatePublished - 2013
Event2013 Congress on Stability and Performance of Slopes and Embankments III, Geo-Congress 2013 - San Diego, CA, United States
Duration: Mar 3 2013Mar 7 2013

Publication series

NameGeotechnical Special Publication
Number231 GSP
ISSN (Print)0895-0563

Conference

Conference2013 Congress on Stability and Performance of Slopes and Embankments III, Geo-Congress 2013
CountryUnited States
CitySan Diego, CA
Period03/3/1303/7/13

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