Weak subgrade treatment using geogrid reinforcement

In order to demonstrate and quantify the benefit of geogrid reinforcement in improving the bearing capacity of weak subgrades, a full-scale laboratory as well as two recent full-scale instrumented field trial beds were constructed and evaluated by the authors; one in Germany and another one in Australia. In each project the variation in observed in-situ bearing capacity and the modulus parameter was evaluated over a series of variants, including geogrid strength/stiffness, geogrid combination, thickness and quality of cover materials. The results demonstrate a clear improvement in the bearing capacity of the geogrid reinforced section when compared to the unreinforced sections. Similarly, the reinforced trial beds exhibited a considerable reduction in the vertical deformation and lower magnitudes of normal stress being transferred to the underlying weak subgrade were observed. The results also demonstrated a clear influence of strength parameter of the geogrids on the performance of the geogrid reinforcement.

• Record URL:
  https://australiangeomechanics.org/downloads/
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780994626103
• Authors:
  • Shahkolahi, A
  • Klompmaker, J
  • Lacey, D
• Conference:
  • Australia New Zealand Conference on Geomechanics, 13th, 2019, Perth, Western Australia, Australia
• Publication Date: 2019-4

Language

• English

Media Info

• Pagination: 967-72
• Monograph Title: Proceedings of the 13th Australia New Zealand Conference on Geomechanics Perth, Western Australia, 1-3 April, 2019

Subject/Index Terms

• TRT Terms: Evaluation; Geogrids; Material reinforcement; Soil stabilization; Subgrade (Pavements)
• Geographic Terms: Australia; Germany
• ATRI Terms: Bearing capacity; Evaluation; Geogrid; Reinforcement; Soil stabilization; Subgrade
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 01714794
• Record Type: Publication
• Source Agency: ARRB Group Limited
• ISBN: 9780994626103
• Files: ITRD, ATRI
• Created Date: Aug 26 2019 11:51AM