Effects of Glass Fiber Reinforced Polymer on Geotechnical Properties of Clayey Soil

Subject Areas : Structural Engineering

Fardin  Asadollahi ¹ (Department of Geotechnical Engineering, Maraghe Branch, Islamic Azad University, Maraghe, Iran)
Rouzbeh  Dabiri ² (bDepartment of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran)

Received: 2017-03-30 Accepted : 2017-05-19 Published : 2017-09-01

Keywords: permeability, GFRP, Cohesion, Clayey soil, Angle of internal friction,

Abstract :

Soil reinforcement can be considered as the combination of two parts. One part is soil for compressive stress capacity and another part is some material such as geosynthetics such as steel belts and fibers for tensile stress capacity. Soil improvement is one of the useful methods to increase the strength parameters of the soil. The main goal of this study is to evaluate the effects of GFRP on the bearing capacity, shear strength, and permeability of clayey soil. For this purpose, the length of GFRP is selected 10 mm and amount of GFRP are 0.2, 0.4, 0.6, 0.8 and 1% that mixed randomly with clay. Mixture specimens prepared using the optimum water content. Bearing capacity of specimens measured by unconfined compressive test and direct shear test. Also, Permeability parameter assessed based on the falling head permeability test. Results of this study showed that with mixing GFRP up to 0.8% increases the clay bearing capacity and flexibility. Although with continuing to add GFRP the bearing capacity decrease, the clay permeability using GFRP is increased.

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