Bond Behavior between Basalt Fiber–Reinforced Polymer Sheet and Concrete Substrate under the Coupled Effects of Freeze-Thaw Cycling and Sustained Load

AbstractThis paper presents an experimental investigation on the bond behavior between basalt fiber–reinforced polymer (BFRP) sheet and concrete substrate under the coupled effects of freeze-thaw cycling and sustained load. Test variables were freeze-thaw cycles, level of sustained load, and adhesive type. Double-lap shear specimens were used in the tests, and a specially designed reaction-loading system was used to apply the sustained load during freeze-thaw cycles. Specimens with or without sustained load were exposed to up to 300 freeze-thaw cycles. A modified epoxy resin, made by adding a toughening agent to the original epoxy resin, was used in the test to study the effect of adhesive type on the durability of the BFRP–concrete interface. Coupon tests were also conducted to determine the freeze-thaw resistance of the constituent materials of the BFRP–concrete interface. After exposure, double-lap shear tests were carried out to investigate the residual bond capacity of the BFRP–concrete interface. Di...

[1]  Zhishen Wu,et al.  Recent Developments in Long-Term Performance of FRP Composites and FRP-Concrete Interface , 2010 .

[2]  Michel Ghosn,et al.  Freeze–thaw degradation of FRP–concrete interface: Impact on cohesive fracture response , 2008 .

[3]  Tamon Ueda,et al.  JSCE RECOMMENDATIONS FOR UPGRADING OF CONCRETE STRUCTURES WITH USE OF CONTINUOUS FIBER SHEETS , 2001 .

[4]  V. Karbhari.  Durability of composites for civil structural applications , 2007 .

[5]  Christopher K.Y. Leung,et al.  Effect of Concrete Composition on Interfacial Parameters Governing FRP Debonding from the Concrete Substrate , 2009 .

[6]  Jang-Kyo Kim,et al.  Experimental study on RC beams with FRP strips bonded with rubber modified resins , 2004 .

[7]  Thomas E. Boothby,et al.  Durability Evaluation of Glass Fiber Reinforced-Polymer-Concrete Bonded Interfaces , 2005 .

[8]  Tamon Ueda,et al.  Development of the Nonlinear Bond Stress-Slip Model of Fiber Reinforced Plastics Sheet-Concrete Interfaces with a Simple Method , 2005 .

[9]  C. Czaderski,et al.  Front and Side View Image Correlation Measurements on FRP to Concrete Pull-Off Bond Tests , 2010 .

[10]  Zhishen Wu,et al.  Stress Transfer and Fracture Propagation in Different Kinds of Adhesive Joints , 2002 .

[11]  A. Prota,et al.  Tensile behavior of epoxy based FRP composites under extreme service conditions , 2012 .

[12]  Cyril J. Lynsdale,et al.  Influence of aggressive exposure conditions on the behaviour of adhesive bonded concrete–GFRP joints , 1998 .

[13]  Zhishen Wu,et al.  A Three-Parameter Bond Strength Model for FRP—Concrete Interface , 2009 .

[14]  Yanchun Yun,et al.  Analytical modeling of the bond–slip relationship at FRP-concrete interfaces for adhesively-bonded joints , 2010 .

[15]  Manuel A.G. Silva,et al.  Degradation of bond between FRP and RC beams , 2008 .

[16]  M. Chajes,et al.  Durability of concrete beams externally reinforced with composite fabrics , 1995 .

[17]  Stephanie L. Walkup,et al.  Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures (ACI 440.2R-02) , 2005 .

[18]  Yufei Wu,et al.  Durability of CFRP–concrete joints under freeze–thaw cycling , 2011 .

[19]  Jian fei Chen,et al.  Anchorage strength models for FRP and steel plates bonded to concrete , 2001 .

[20]  Zhishen Wu,et al.  Nonlinear constitutive model for time-dependent behavior of FRP-concrete interface , 2007 .

[21]  Piyush K. Dutta,et al.  Structural Fiber Composite Materials for Cold Regions , 1988 .