Combined effects of steel fiber and coarse aggregate size on the compressive and flexural toughness of high-strength concrete

This paper investigates the effects of steel fiber content and coarse aggregate size on the mechanical properties of high-strength concrete with a specified compressive strength value of 60 MPa. The paper also explores the correlation between the compressive and flexural toughness of high-strength steel fiber-reinforced concrete (SFRC). For this purpose, twelve high-strength SFRC mixtures with four fiber volume fraction of steel fiber ( V f V f = 0.5%, 1.0%, 1.5%, and 2.0%) and different aggregate sizes were designed and fabricated. Compressive and flexural tests for each concrete mixture were conducted, and the test results were used to investigate the effects of steel fiber volume fraction and aggregate size on the compressive and flexural toughness of high-strength SFRC prims. The results indicate that the mechanical properties of SFRC are related more closely to volume fraction than to aggregate size. The compressive and flexural toughness ratios of the SFRC significantly improved with an increase in fiber content. Also, equations that are suggested to determine the compressive toughness ratio based on the equivalent flexural strength ratio were used to predict the mechanical properties of the SFRC in this study.

[1]  R. Narayanan,et al.  USE OF STEEL FIBERS AS SHEAR REINFORCEMENT , 1987 .

[2]  R. Olivito,et al.  An experimental study on the tensile strength of steel fiber reinforced concrete , 2010 .

[3]  Yuri Ribakov,et al.  Effect of steel fibres on mechanical properties of high-strength concrete , 2010 .

[4]  Parviz Soroushian,et al.  FIBER-TYPE EFFECTS ON THE PERFORMANCE OF STEEL FIBER REINFORCED CONCRETE , 1991 .

[5]  Hyun-Do Yun,et al.  Effect of accelerated freeze–thaw cycling on mechanical properties of hybrid PVA and PE fiber-reinforced strain-hardening cement-based composites (SHCCs) , 2013 .

[6]  G. Plizzari,et al.  Experimental behavior of SFRC columns under uniaxial and biaxial cyclic loads , 2016 .

[7]  Baoshan Huang,et al.  Hybrid effects of carbon fibers on mechanical properties of Portland cement mortar , 2015 .

[8]  Young Soo Yoon,et al.  Feasibility of replacing minimum shear reinforcement with steel fibers for sustainable high-strength concrete beams , 2017 .

[9]  James L Noland,et al.  Computer-Aided Structural Engineering (CASE) Project: Decision Logic Table Formulation of ACI (American Concrete Institute) 318-77 Building Code Requirements for Reinforced Concrete for Automated Constraint Processing. Volume 1. , 1986 .

[10]  Basile G. Rabbat,et al.  Notes on ACI 318-08, building code requirements for structural concrete : with design applications , 2008 .

[11]  Gustavo J. Parra-Montesinos,et al.  Shear Strength of Beams with Deformed Steel Fibers , 2006 .

[12]  Nemkumar Banthia,et al.  Fiber synergy in Hybrid Fiber Reinforced Concrete (HyFRC) in flexure and direct shear , 2014 .

[13]  R. Losada,et al.  Calibration patterns for predicting residual strengths of steel fibre reinforced concrete (SFRC) , 2014 .

[14]  Kang Su Kim,et al.  Shear behavior model for steel fiber-reinforced concrete members without transverse reinforcements , 2012 .

[15]  Seong-Cheol Lee,et al.  Compressive Behavior of Fiber-Reinforced Concrete with End-Hooked Steel Fibers , 2015, Materials.

[16]  S. Ahmed,et al.  Flexural responses of hybrid steel-polyethylene fiber reinforced cement composites containing high volume fly ash , 2007 .

[17]  M. C. Nataraja,et al.  STRESS-STRAIN CURVES FOR STEEL-FIBER REINFORCED CONCRETE UNDER COMPRESSION , 1999 .

[18]  R. F. Zollo.  Fiber-reinforced concrete: An overview after 30 years of development , 1997 .

[19]  P. Song,et al.  Mechanical properties of high-strength steel fiber-reinforced concrete , 2004 .

[20]  Haoran Xu,et al.  Experimental investigation on the seismic performance of steel–polypropylene hybrid fiber reinforced concrete columns , 2015 .

[21]  Haisam E. Yakoub,et al.  Shear Stress Prediction: Steel Fiber-Reinforced Concrete Beams without Stirrups , 2011 .

[22]  Kuang-Han Chu,et al.  STRESS-STRAIN RELATIONSHIP FOR PLAIN CONCRETE IN COMPRESSION , 1985 .

[23]  A. Samer Ezeldin,et al.  Normal‐ and High‐Strength Fiber‐Reinforced Concrete under Compression , 1992 .

[24]  G. Batson,et al.  STEEL FIBERS AS SHEAR REINFORCEMENT IN BEAMS , 1972 .

[25]  Ziad Bayasi,et al.  Reduction of Lateral Reinforcement in SeismicBeam-Column Connection via Application of Steel Fibers , 2002 .

[26]  H. Yun,et al.  Shear Behavior of Squat Steel Fiber Reinforced Concrete (SFRC) Shear Walls with Vertical Slits , 2013 .

[27]  J. Katzer.  Steel Fibers and Steel Fiber Reinforced Concrete in Civil Engineering , 2006 .

[28]  Tadashi Saito,et al.  Study on Evaluation Method for PVA Fiber Distribution in Engineered Cementitious Composite , 2003 .

[29]  P. Serna,et al.  Influence of concrete matrix and type of fiber on the shear behavior of self-compacting fiber reinforced concrete beams , 2015 .

[30]  S. Alcocer,et al.  Behavior of low-rise, steel fiber-reinforced concrete thin walls under shake table excitations , 2017 .

[31]  N. Ganesan,et al.  Strength and Behavior of Confined Steel Fiber Reinforced Concrete Columns , 1990 .

[32]  Lucie Vandewalle,et al.  Fibre reinforced concrete: new design perspectives , 2009 .

[33]  V. Li,et al.  TENSILE STRAIN-HARDENING BEHAVIOR OF POLYVINYL ALCOHOL ENGINEERED CEMENTITIOUS COMPOSITE (PVA-ECC) , 2001 .

[34]  Nemkumar Banthia,et al.  Test Methods for Fexural Toughness Characterization of Fiber Reinforced Concrete: Some Concerns and a Proposition , 1995 .

[35]  R. Swamy,et al.  The Effectiveness of Steel Fibers as Shear Reinforcement , 1985 .

[36]  E. Khalifa.  Analytical model for steel fiber concrete composite short-coupling beam , 2014 .