Studying the Effect of Roughness on Soil-Geotextile Interaction in Direct Shear Test

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Abdi Mahmood Reza; Safdari Seh Gonbad Mahdi

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Paper Information

Journal: JOURNAL OF ENGINEERING GEOLOGY Year:2018 | Volume:12 | Issue:5 (supp.) Page(s): 1-30

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Title

Studying the Effect of Roughness on Soil-Geotextile Interaction in Direct Shear Test

Author(s)

Abdi Mahmood Reza | Safdari Seh Gonbad Mahdi | Issue Writer Certificate

Keywords

GeosyntheticQ1

GeotextileQ1

Direct shearQ1

InteractionQ1

RoughnessQ1

Soil gradationQ1

Abstract

One of the methods of increasing soil resistance against failure is soil reinforcement using Geosynthetics. Soil-Geosynthetic Interactions are of great importance and are affected by friction and adhesion at their interface. Soil gradation, contact surface Roughness and Geotextile density are among the factors affecting soil-Geotextiles Interaction this study, to investigate the effects of these factors, large-scale Direct shear tests have been conducted using a well and a poorly graded sand at a relative density of 80% reinforced with two Geotextiles having different tensile strengths and mass per unit area. Samples were subjected to normal pressures of 12. 5, 25 and 50kPa and sheared at a rate of 1 mm/min. Geotextile surface Roughness was achieved by gluing two different single sized sand particles. Results show that increasing Geotextile surface Roughness increases shear strength at soil-Geotextile interface. Geotextile tensile strength mobilization is shown to depend on soil grain size at the interface. The coarser and more angular the soil particles, the more effective the soil-reinforcement Interactions. Geotextile tensile strength and its mass per unit area are shown to less important factors.

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APA: Copy

Abdi, Mahmood Reza, & Safdari Seh Gonbad, Mahdi. (2018). Studying the Effect of Roughness on Soil-Geotextile Interaction in Direct Shear Test. JOURNAL OF ENGINEERING GEOLOGY, 12(5 (supp.) ), 1-30. SID. https://sid.ir/paper/186322/en

Vancouver: Copy

Abdi Mahmood Reza, Safdari Seh Gonbad Mahdi. Studying the Effect of Roughness on Soil-Geotextile Interaction in Direct Shear Test. JOURNAL OF ENGINEERING GEOLOGY[Internet]. 2018;12(5 (supp.) ):1-30. Available from: https://sid.ir/paper/186322/en

IEEE: Copy

Mahmood Reza Abdi, and Mahdi Safdari Seh Gonbad, “Studying the Effect of Roughness on Soil-Geotextile Interaction in Direct Shear Test,” JOURNAL OF ENGINEERING GEOLOGY, vol. 12, no. 5 (supp.) , pp. 1–30, 2018, [Online]. Available: https://sid.ir/paper/186322/en

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