Characterization of Cohesive Soil-Geosynthetics Interactions from Large Direct Shear Tests

This paper describes how geosynthetics have increasingly been used to reinforce many earth structures and are now a well-accepted means of improving engineering properties of marginal soils. However, most of past studies and applications of geosynthetics stabilization are confined to non-cohesive soils. Few research efforts have been dedicated to the feasibility and benefits of geosynthetics reinforcement on cohesive soils, which is highly desirable in areas that cohesive soils prevail. The results of an extensive laboratory testing program using large direct shear device, in which four different soils (including one sand and three clays of different plasticities) were reinforced by three different geogrids and one woven geotextile are presented in this paper. Reinforcement mechanisms are analyzed and the interface parameters between the soils and geosynthetics were derived from the testing results. The influence of moisture contents and dry densities on reinforcement effects was also investigated. This study provides a basis for future research and modeling the behavior between cohesive soils and geosynthetics.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Abu-Farsakh, Murad Yusuf
  • Coronel, Julian
• Conference:
  • Transportation Research Board 85th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2006-1-22 to 2006-1-26
• Date: 2006

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References; Tables;
• Pagination: 9p
• Monograph Title: TRB 85th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Direct shear tests; Earth pressure; Engineering soils; Geosynthetics; Shear strain; Shear strength; Soil stabilization; Soil structure; Soil tests; Soils
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 01023504
• Record Type: Publication
• Report/Paper Numbers: 06-0651
• Files: TRIS, TRB
• Created Date: Apr 28 2006 8:11AM