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    Volume 44, Issue 1 (January 2016)

    Special Issue Paper

    Interface Behavior Between Carbon-Fiber Polymer and Sand

    (Received 16 April 2014; accepted 5 May 2015)

    Published Online: 28 January 2016

    CODEN: JTEVAB

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    Abstract

    Interface shear strength between soil and structural materials is dependent on the confining pressure. To increase the confining pressure, different methods of reinforcement and materials, such as carbon-fiber-reinforced polymer (CFRP) can be used. The shear strength of CFRP-improved soil is dependent on the interface properties of the soil and CFRP. The objective of this study is to investigate the interface properties (friction angle and adhesion) of sand and FRP experimentally using the direct shear test apparatus. To increase the surface roughness to improve the interface properties, a layer of sand was placed on saturated carbon fiber during the curing period [spark plasma sintering CFRP (SPSCFRP)] and normal stress was applied on the sand. More than 60 interface shear tests were conducted with different curing times, shear rates, and normal stresses on SPSCFRP during curing time. Tests showed that as normal stress on SPSCFRP during curing time increased, the friction angle increased; however, increasing the curing times and the rate of shearing had a small influence on interface properties.


    Author Information:

    Toufigh, Vahab
    Assistant Professor, Dept. of Civil Engineering, Sharif Univ. of Technology, Tehran,

    Ouria, Ahad
    Assistant Professor, Dept. of Civil Engineering, Univ. of Mohaghegh Ardabili, Ardabil,

    Desai, Chandrakant S.
    Regents' Professor, Dept. of Civil Engineering and Engineering Mechanics, Univ. of Arizona, Tucson, AZ

    Javid, Navid
    Graduate Student, Dept. of Civil Engineering, Univ. of Kerman, Kerman,

    Toufigh, Vahid
    Assistant Professor, Dept. of Civil Engineering, Graduate Univ. of Advanced Technology, Kerman,

    Saadatmanesh, Hamid
    Professor, Dept. of Civil Engineering and Engineering Mechanics, Univ. of Arizona, Tucson, AZ


    Stock #: JTE20140153

    ISSN:0090-3973

    DOI: 10.1520/JTE20140153

    Author
    Title Interface Behavior Between Carbon-Fiber Polymer and Sand
    Symposium ,
    Committee D35