Effect of water content on the abrasivity of granular soils in soft ground tunneling applications

Ehsan Alavi Gharahbagh, Tong Qiu, Jamal Rostami

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

2 Scopus citations

Abstract

This paper presents an experimental study of tool wear and abrasivity of granular soils using a testing system specifically designed for the evaluation of wear in soft ground tunneling applications. In the testing system, a propeller that is fitted with steel covers with different hardness is rotated at 60 rpm in granular soil samples in a chamber under ambient pressures of up to 10 bar. The developed system can quantitatively assess the abrasive characteristics of soils through the measurement of weight loss on the special covers of the propeller, accounting for soil gradation, mineral composition, sphericity and roundness, water content, and tool hardness. Preliminary test results indicate that water content has significant impact on tool wear and soil abrasion. For the tests conducted, it is observed that tool wear first increases with water content until the water content reaches about 7-10%; beyond this range, higher water content reduces tool wear.

Original languageEnglish (US)
Title of host publicationGeo-Congress 2014 Technical Papers
Subtitle of host publicationGeo-Characterization and Modeling for Sustainability - Proceedings of the 2014 Congress
PublisherAmerican Society of Civil Engineers (ASCE)
Pages485-494
Number of pages10
Edition234 GSP
ISBN (Print)9780784413272
DOIs
StatePublished - Jan 1 2014
Event2014 Congress on Geo-Characterization and Modeling for Sustainability, Geo-Congress 2014 - Atlanta, GA, United States
Duration: Feb 23 2014Feb 26 2014

Publication series

NameGeotechnical Special Publication
Number234 GSP
ISSN (Print)0895-0563

Other

Other2014 Congress on Geo-Characterization and Modeling for Sustainability, Geo-Congress 2014
CountryUnited States
CityAtlanta, GA
Period2/23/142/26/14

All Science Journal Classification (ASJC) codes

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

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    Gharahbagh, E. A., Qiu, T., & Rostami, J. (2014). Effect of water content on the abrasivity of granular soils in soft ground tunneling applications. In Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability - Proceedings of the 2014 Congress (234 GSP ed., pp. 485-494). (Geotechnical Special Publication; No. 234 GSP). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784413272.046