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Geomechanics and Engineering
  Volume 6, Number 1, January 2014, pages 33-45

Bearing capacity of geotextile-reinforced sand with varying fine fraction
Kousik Deb and Sanku Konai

    Use of geotextile as reinforcement material to improve the weak soil is a popular method these days. Tensile strength of geotextile and the soil-geotextile interaction are the major factors which influence the improvement of the soil. Change in fine content within the sand can change the interface behavior between soil and geotextile. In the present paper, the bearing capacity of unreinforced and geotextile-reinforced sand with different percentages of fines has been studied. A series of model tests have been carried out and the load settlement curves are obtained. The ultimate load carrying capacity of unreinforced and reinforced sand with different percentages of fines is compared. The interface behavior of sand and geotextile with various percentages of fines is also studied. It is observed that sand having around 5% of fine is suitable or permissible for bearing capacity improvement due to the application of geosynthetic reinforcement. The effectiveness of the reinforcement in load carrying capacity improvement decreases due to the addition of excessive amount of fines.
Key Words
    bearing capacity; compaction; fine; geotextile-reinforced sand; soil-geotextile interface friction and adhesion
Kousik Deb and Sanku Konai:
Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur - 721302, India.

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