Investigation of glass-fibre-reinforced-polymer shells as formwork and reinforcement for concrete columns

An investigation was conducted to study the behaviour of full-scale concrete-filled glass-fibre-reinforced-polymer (GFRP) shells under concentric compression. The main objective was to assess the suitability of prefabricated GFRP shells for stay-in-place formwork and confining reinforcement for columns. Seventeen columns, 356 mm in diameter and 1524 mm long were tested. The nominal target concrete compressive strength at 28 d was 30 MPa. Variables examined included number of GFRP layers, fibre orientation, and amount of longitudinal and lateral steel. Confinement by GFRP shells resulted in concrete response that displayed increased strength and associated strain followed by a ductile descending branch. Fibres in the longitudinal direction improved the load-carrying capacity of the columns, but the increase was less than the capacity of the fibres determined from the tension tests. Glass-fibre-reinforced-polymer shells also eliminate the need for closely spaced confinement steel, which should improve the q...

[1]  S. H. Ahmad,et al.  Behaviour of concrete spirally confined by fibreglass filaments , 1991 .

[2]  V. Karbhari,et al.  COMPOSITE JACKETED CONCRETE UNDER UNIAXIAL COMPRESSION--VERIFICATION OF SIMPLE DESIGN EQUATIONS , 1997 .

[3]  Antonio Nanni,et al.  FRP jacketed concrete under uniaxial compression , 1995 .

[4]  M. Saatcioglu,et al.  Response of Reinforced Concrete Columns to Simulated Seismic Loading , 1989 .

[5]  Yeou-Fong Li,et al.  An effective peak stress formula for concrete confined with carbon fiber reinforced plastics , 2003 .

[6]  T. Rousakis,et al.  Concrete confined by FRP material: a plasticity approach , 2002 .

[7]  Luc Taerwe,et al.  Tests on Axially Loaded Concrete Columns Confined by Fiber Reinforced Polymer Sheet Wrapping , 1999, SP-188: 4th Intl Symposium - Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures.

[8]  Kent A. Harries,et al.  Axial Behavior and Modeling of Confined Small-, Medium-, and Large-Scale Circular Sections with Carbon Fiber-Reinforced Polymer Jackets , 2005 .

[9]  Syed Ali Debaj Jaffry.  Concrete filled glass fibre reinforced polymer (GFRP) shells under concentric compression , 2001 .

[10]  F. E. Richart,et al.  A study of the failure of concrete under combined compressive stresses , 1928 .

[11]  H. Toutanji,et al.  BEHAVIOR OF CONCRETE COLUMNS CONFINED WITH FIBER REINFORCED POLYMER TUBES , 1999 .

[12]  Justin T. Kestner.  Rehabilitation of reinforced concrete columns using fiber reinforced polymer composite jackets , 1998 .

[13]  Arthur H. Nilson,et al.  Design of concrete structures , 1972 .

[14]  Amir Mirmiran,et al.  Tests and modeling of carbon-wrapped concrete columns , 2000 .

[15]  Vistasp M. Karbhari,et al.  Effect of Tow Sheet Composite Wrap Architecture on Strengthening of Concrete Due to Confinement: I—Experimental Studies , 1995 .

[16]  Roberto Lopez-Anido,et al.  Environmental Aging of Fiber-Reinforced Polymer-Wrapped Concrete Cylinders , 2000 .

[17]  Yan Xiao,et al.  Compressive Behavior of Concrete Confined by Carbon Fiber Composite Jackets , 2000 .

[18]  Kent A. Harries,et al.  Experimental investigation of the behavior of variably confined concrete , 2003 .

[19]  Shamim A. Sheikh,et al.  STRENGTH AND DUCTILITY OF TIED CONCRETE COLUMNS , 1980 .

[20]  P. Hamelin,et al.  Compressive behavior of concrete externally confined by composite jackets , 2006 .

[21]  Shamim A. Sheikh,et al.  TIED CONCRETE COLUMNS UNDER AXIAL LOAD AND FLEXURE , 1990 .

[22]  Houssam Toutanji,et al.  Strength and durability performance of concrete axially loaded members confined with AFRP composite sheets , 2002 .

[23]  Huei-Jeng Lin,et al.  Compressive strength of reinforced concrete column confined by composite material , 2004 .

[24]  K. Miyauchi.  Estimation of Strengthening Effects with Carbon Fiber Sheet for Concrete Column , 1997 .

[25]  T Uomoto,et al.  DETERIORATION OF ARAMID, GLASS, AND CARBON FIBERS DUE TO ALKALI, ACID, AND WATER IN DIFFERENT TEMPERATURES , 1999 .

[26]  A. Mirmiran,et al.  Effect of Column Parameters on FRP-Confined Concrete , 1998 .

[27]  Yiu-Wing Mai,et al.  A Study on Polymer Composite Strengthening Systems for Concrete Columns , 2000 .

[28]  Aftab A. Mufti,et al.  Investigation of the behavior of circular concrete columns reinforced with carbon fiber reinforced polymer (CFRP) jackets , 1999 .

[29]  H. Toutanji.  STRESS-STRAIN CHARACTERISTICS OF CONCRETE COLUMNS EXTERNALLY CONFINED WITH ADVANCED FIBER COMPOSITE SHEETS , 1999 .

[30]  Juan Carlos Mastrapa.  The effect of construction bond on confinement with frp composites , 1997 .

[31]  Sam C. Saunders,et al.  Strength and Durability , 2007 .

[32]  F. E. Richart,et al.  Failure of plain and spirally reinforced concrete in compression , 1929 .

[33]  Atorod Azizinamini,et al.  Effects of Transverse Reinforcement on Seismic Performance of Columns , 1992 .

[34]  Amir Fam,et al.  Influence of Concrete Strength on Confinement Effectiveness of Fiber-Reinforced Polymer Circular Jackets , 2005 .

[35]  K W Neale,et al.  Confinement of reinforced concrete columns with fibre-reinforced composite sheets — an experimental study , 1999 .

[36]  P. Hamelin,et al.  COMPRESSIVE BEHAVIOR OF CONCRETE EXTERNALLY CONFINED BY COMPOSITE JACKETS. PART A: EXPERIMENTAL STUDY , 2005 .

[37]  Michèle Thériault,et al.  FIBER REINFORCED POLYMER CONFINED CIRCULAR CONCRETE COLUMNS: INVESTIGATION OF SIZE AND SLENDERNESS EFFECTS , 2004 .

[38]  S. Cairns,et al.  Circular concrete columns externally reinforced with pre-fabricated carbon polymer shells , 2001 .