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2020 Vol.19, Issue 1

Research Article

Variation of Pull-out Resistance of Geogrid with Degree of Saturation of Soil
Chungsik Yoo1
,
TABISH ALI2*
,
1Member, Professor, School of Civil and Environmental Engineering, Sungkyunkwan Univ. Sungkyunkwan University, Cheoncheon-dong, Jangan-gu, Suwan-si, Gyeonggi-do, Korea
2Member, Graduate Student, School of Civil and Environmental Engineering, Sungkyunkwan Univ. Sungkyunkwan University, Cheoncheon-dong, Jangan-gu, Suwan-si, Gyeonggi-do, Korea
* Corresponding Author
31 March 2020. pp. 1-9
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Abstract

This paper presents the results of experimental investigation on the effect of degree of saturation of soil on the pullout behavior of a geogrid. Different test variables were taken into account while performing the experiment including the soil physical conditions based on water content and external loading applied. The soil used was locally available weathered granite soil. The tests included variations in saturation of about 90%, 80%, 70% and 45% (optimum moisture content). The pullout tests were performed according to ASTM standard D 6706-01. The results indicate that increasing the degree of saturation in the soil decreases the pull-out capacity, which in turn decreases the interface friction angle and interaction coefficient. The decrease in the pullout interface coefficient was observed to be around 12.50% to 33.33% depending on the normal load and degree of saturation of the soil. The test results demonstrated the detrimental effect of increasing the degree of saturation within the reinforce soil on the pullout behavior of reinforcement, thus on the internal stability. The practical inferences of the outcomes are analyzed in detail.

Keywords
Geosynthetic reinforced soil
Geogrid
Degree of saturation
Pullout capacity
Weathered granite soil

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 19
  • No :1
  • Pages :1-9
  • Received Date : 2019-10-01
  • Revised Date : 2020-01-15
  • Accepted Date : 2020-01-17
  • DOI :https://doi.org/10.12814/jkgss.2020.19.1.001
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