EXPERIMENTAL INVESTIGATION ON THE BEHAVIOR OF ARAMID FIBER REINFORCED POLYMER CONFINED CONCRETE SUBJECTED TO HIGH STRAIN-RATE COMPRESSION

Abstract This study investigated the behavior of aramid fiber reinforced polymer (AFRP) confined concrete subjected to high strain-rate compression. A total of 71 specimens were tested under quasi-static and high strain-rate axial compression using a hydraulically-driven testing system and a 100-mm-diameter split Hopkinson pressure bar apparatus, respectively. Influence of the loading rate was examined with strain rates ranging from 80 to 170 s −1 . The influence of lateral confinement level was also examined by varying the number of AFRP layers and imposing different strain rates. The experimental results indicate that the dynamic strength, ultimate strain and energy absorption density are sensitive to strain rate, and that the external AFRP confinement significantly improves these properties. In addition, this paper discusses the strengthening and toughening mechanisms of AFRP jackets.

[1]  Togay Ozbakkaloglu,et al.  Compressive behavior of concrete-filled FRP tube columns: Assessment of critical column parameters , 2013 .

[2]  Tuan Ngo,et al.  Behavior of Ultrahigh-Strength Prestressed Concrete Panels Subjected to Blast Loading , 2007 .

[3]  W. Dilger,et al.  Ductility of Plain and Confined Concrete Under Different Strain Rates , 1984 .

[4]  Jinyu Xu,et al.  Impact characterization of basalt fiber reinforced geopolymeric concrete using a 100-mm-diameter split Hopkinson pressure bar , 2009 .

[5]  S. Pantazopoulou,et al.  Limitations of FRP Jacketing in Confining Old-Type Reinforced Concrete Members in Axial Compression , 2006 .

[6]  T. Ozbakkaloglu,et al.  Influence of fiber orientation and specimen end condition on axial compressive behavior of FRP-confined concrete , 2013 .

[7]  S. Quek,et al.  Mechanical behavior of fiber-reinforced high-strength concrete subjected to high strain-rate compressive loading , 2012 .

[8]  Mark F. Green,et al.  COMPARISON OF CONFINEMENT MODELS FOR FIBER-REINFORCED POLYMER-WRAPPED CONCRETE , 2005 .

[9]  Gao,et al.  How fast can cracks propagate? , 2000, Physical review letters.

[10]  Togay Ozbakkaloglu,et al.  Influence of silica fume on stress–strain behavior of FRP-confined HSC , 2014 .

[11]  Jinyu Xu,et al.  Mechanical properties of ceramic fiber-reinforced concrete under quasi-static and dynamic compression , 2014 .

[12]  Z. L. Wang,et al.  On the strength and toughness properties of SFRC under static-dynamic compression , 2011 .

[13]  Yufei Wu,et al.  Effect of corner radius on the performance of CFRP-confined square concrete columns: Test , 2008 .

[14]  Wei Sun,et al.  Dynamic compression behavior of ultra-high performance cement based composites , 2010 .

[15]  Qingming Li,et al.  About the dynamic strength enhancement of concrete-like materials in a split Hopkinson pressure bar test , 2003 .

[16]  J. Jang,et al.  Effect of laminate thickness on impact behavior of aramid fiber/vinylester composites , 2003 .

[17]  Stavroula J. Pantazopoulou,et al.  Role of Expansion on Mechanical Behavior of Concrete , 1995 .

[18]  Michael N. Fardis,et al.  Concrete encased in fiberglass reinforced plastic , 1981 .

[19]  D. J. Parry,et al.  The Hopkinson Bar , 1999 .

[20]  Togay Ozbakkaloglu,et al.  Seismic Behavior of High-Strength Concrete-Filled FRP Tube Columns , 2013 .

[21]  W. Brace,et al.  Comparison of uniaxial deformation in shock and static loading of three rocks , 1971 .

[22]  Oral Büyüköztürk,et al.  Ductility of FRP–concrete systems: Investigations at different length scales , 2013 .

[23]  Demetrios M. Cotsovos,et al.  Numerical investigation of concrete subjected to compressive impact loading. Part 1: A fundamental explanation for the apparent strength gain at high loading rates , 2008 .

[24]  S. Pantazopoulou,et al.  Effect of core compaction on deformation capacity of FRP-jacketed concrete columns , 2013 .

[25]  Comite Euro-International du Beton,et al.  CEB-FIP Model Code 1990 , 1993 .

[26]  E. Barraud,et al.  Compressive strength of cement paste as a function of loading rate: Experiments and engineering mechanics analysis , 2014 .

[27]  Pierre Labossière,et al.  Axial Testing of Rectangular Column Models Confined with Composites , 2000 .

[28]  F. Huang,et al.  Further investigation on the dynamic compressive strength enhancement of concrete-like materials based on split Hopkinson pressure bar tests. Part I: Experiments , 2009 .

[29]  Togay Ozbakkaloglu,et al.  Axial compressive behavior of FRP-confined concrete: Experimental test database and a new design-oriented model , 2013 .

[30]  Tao Yu,et al.  FRP-confined circular concrete-filled steel tubular columns under cyclic axial compression , 2014 .

[31]  S. H. Perry,et al.  Compressive behaviour of concrete at high strain rates , 1991 .

[32]  Amir Mirmiran,et al.  Strength and Ductility of Hybrid FRP-Concrete Beam Columns , 1999 .

[33]  Qingming Li,et al.  Local impact effects of hard missiles on concrete targets , 2005 .

[34]  T. Kang,et al.  Energy-absorption mechanisms in Kevlar multiaxial warp-knit fabric composites under impact loading , 2000 .

[35]  I. A. Viktorov.  Rayleigh and Lamb Waves: Physical Theory and Applications , 1967 .

[36]  H. Hao,et al.  Modelling of compressive behaviour of concrete-like materials at high strain rate , 2008 .

[37]  Z. Malinowski,et al.  Dynamic Frictional Effects as Measured from the Split Hopkinson Pressure Bar , 1979 .

[38]  R. Bashirzadeh,et al.  Temperature effects on Kevlar/hybrid and carbon fiber composite sandwiches under impact loading , 2007 .

[39]  Amir Mirmiran,et al.  Model of Concrete Confined by Fiber Composites , 1998 .

[40]  Qingming Li,et al.  Dynamic behaviour of polymers at high strain-rates based on split Hopkinson pressure bar tests , 2011 .

[41]  Jason Baird,et al.  Experimental and numerical analyses of long carbon fiber reinforced concrete panels exposed to blast loading , 2013 .