Static cyclic behaviour of FRP-confined crumb rubber concrete columns

Abstract An experimental study was performed to investigate the possible use of crumb rubber concrete (CRC) for structural columns by evaluating the use of fibre reinforced polymer (FRP) confinement as a means of overcoming the material deficiencies (compressive strength). Five reinforced concrete columns having 240 mm diameter and 1500 mm shear span were tested under axial compression and incrementally increasing reverse cyclic loading. Three columns were constructed out of CRC with 0, 2 and 4 layers of carbon FRP and two were constructed out of conventional concrete with 0 and 2 layers of carbon FRP. The results of this study showed that at the same confinement thickness, the peak strength of the FRP-confined CRC column was slightly higher than that of the FRP-confined conventional concrete column, even though the base concrete compressive strength was less. However, its ultimate drift was slightly lower. Doubling the confinement thickness increased the peak strength and the ultimate drift of the FRP-confined CRC by 11.5% and 53.8%, respectively. By using 2 layers of FRP, the strength confinement effectiveness of the conventional concrete and the CRC were 1.11 and 1.13, respectively, however, the drift confinement effectiveness was 0.98 and 1.07, respectively. This investigation demonstrates that CRC provides an environmentally-friendly alternative to conventional concrete in structural applications.

[1]  A. P. Shashikala,et al.  Behavior of Self-Consolidating Rubberized Concrete Beam-Column Joints , 2013 .

[2]  B. H. Abu Bakar,et al.  Performance of Rubberized and Hybrid Rubberized Concrete Structures under Static and Impact Load Conditions , 2013 .

[3]  Shuaituan Tian,et al.  Research on Modifier and Modified Process for Rubber-Particle Used in Rubberized Concrete for Road , 2011 .

[4]  Shamim A. Sheikh,et al.  Fiber-Reinforced Polymer-Confined Circular Columns under Simulated Seismic Loads , 2013 .

[5]  M. ElGawady,et al.  Mechanical properties of high strength concrete with scrap tire rubber , 2015 .

[6]  Kypros Pilakoutas,et al.  Strength and deformability of waste tyre rubber-filled reinforced concrete columns , 2011 .

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

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

[9]  Mohamed A. ElGawady,et al.  Strain Rate Effect on Properties of Rubberized Concrete Confined with Glass Fiber–Reinforced Polymers , 2016 .

[10]  Mohamed A. ElGawady,et al.  Seismic Behavior of Posttensioned Concrete-Filled Fiber Tubes , 2010 .

[11]  Clay J. Naito,et al.  Assessment of Crumb Rubber Concrete for Flexural Structural Members , 2014 .

[12]  Fernando Pacheco-Torgal,et al.  Properties and durability of concrete containing polymeric wastes (tyre rubber and polyethylene terephthalate bottles): An overview , 2012 .

[13]  Hamid Saadatmanesh,et al.  Seismic Strengthening of Circular Bridge Pier Models with Fiber Composites , 1996 .

[14]  M. ElGawady,et al.  Experimental Investigation of Crumb Rubber Concrete Columns under Seismic Loading , 2015 .

[15]  Jack P. Moehle,et al.  "BUILDING CODE REQUIREMENTS FOR STRUCTURAL CONCRETE (ACI 318-11) AND COMMENTARY" , 2011 .

[16]  Mohamed Elchalakani,et al.  High strength rubberized concrete containing silica fume for the construction of sustainable road side barriers , 2015 .

[17]  Togay Ozbakkaloglu,et al.  Seismic Performance of Square High-Strength Concrete Columns in FRP Stay-in-Place Formwork , 2007 .

[18]  M. ElGawady,et al.  An experimental investigation of crumb rubber concrete confined by fibre reinforced polymer tubes , 2014 .

[19]  Togay Ozbakkaloglu,et al.  Seismic Behavior of FRP-High-Strength Concrete–Steel Double-Skin Tubular Columns , 2014 .

[20]  R. Clough,et al.  Dynamics Of Structures , 1975 .

[21]  Thanasis Triantafillou,et al.  TIME DEPENDENT BEHAVIOR OF RC MEMBERS STRENGTHENED WITH FRP LAMINATES , 1994 .

[22]  Guangming Chen,et al.  Compressive behaviour of concrete structures incorporating recycled concrete aggregates, rubber crumb and reinforced with steel fibre, subjected to elevated temperatures , 2014 .

[23]  Jianhe Xie,et al.  Compressive and flexural behaviours of a new steel-fibre-reinforced recycled aggregate concrete with crumb rubber , 2015 .

[24]  Jorge de Brito,et al.  Concrete made with used tyre aggregate: durability-related performance , 2012 .

[25]  Trilok Gupta,et al.  Assessment of mechanical and durability properties of concrete containing waste rubber tire as fine aggregate , 2014 .

[26]  Mesay A Endeshaw,et al.  Retrofitting of Rectangular Columns with Deficient Lap Splices , 2010 .

[27]  Shuaib H. Ahmad,et al.  Freeze-Thaw Durability of Concrete with Ground Waste Tire Rubber , 1997 .

[28]  M. Shinozuka,et al.  Rubberized concrete: A green structural material with enhanced energy-dissipation capability , 2013 .

[29]  Adam G. Bowland.  Comparison and Analysis of the Strength, Stiffness, and Damping Characteristics of Concrete with Rubber, Latex, and Carbonate Additives , 2011 .

[30]  H. Ismail,et al.  Effect of partial replacement of sand by recycled fine crumb rubber on the performance of hybrid rubberized-normal concrete under impact load: experiment and simulation , 2013 .

[31]  A. Atahan,et al.  Crumb rubber in concrete: Static and dynamic evaluation , 2012 .

[32]  Mohamed A. ElGawady,et al.  Finite element modelling and dilation of FRP-confined concrete columns , 2014 .

[33]  M. R. Hall,et al.  Mechanical and dynamic properties of self-compacting crumb rubber modified concrete , 2012 .

[34]  M. ElGawady,et al.  Seismic Behavior of Self-Centering Precast Segmental Bridge Bents , 2011 .

[35]  R. Realfonzo,et al.  Cyclic Behavior of RC Columns Strengthened by FRP and Steel Devices , 2009 .

[36]  Medhat A. Haroun,et al.  Fiber-Reinforced Plastic Jackets for Ductility Enhancement of Reinforced Concrete Bridge Columns with Poor Lap-Splice Detailing , 2005 .

[37]  M. Saatcioglu,et al.  Seismic Behavior of High-Strength Concrete Columns Confined by Fiber-Reinforced Polymer Tubes , 2006 .

[38]  Mohamed A. ElGawady,et al.  Behavior of Segmental Precast Posttensioned Bridge Piers under Lateral Loads , 2012 .

[39]  Mohamed A. ElGawady,et al.  Displacement and plastic hinge length of FRP-confined circular reinforced concrete columns , 2015 .