Compressive behavior of steel fiber reinforced recycled aggregate concrete after exposure to elevated temperatures

Abstract For sustainability considerations, the use of recycled aggregate in concrete has attracted many interests in the research community. One of the main concerns for using such concrete in buildings is its spalling in fire. This may be alleviated by adding steel fibers to form steel fiber reinforced recycled aggregate concrete (SFRAC). This paper presents an experimental investigation into the compressive properties of SFRAC cylinders after exposure to elevated temperatures, including the compressive strength, Young’s modulus (stiffness), stress–strain curve and energy absorption capacity (toughness). The effects of two parameters, namely steel fiber volume content (0%, 0.5%, 1%, 1.5%) and temperature (room temperature, 200 °C, 400 °C and 600 °C) on the compressive mechanical properties of concrete were investigated. The test results show that both compressive strength and stiffness of the concrete are significantly reduced after exposure to high temperatures. The addition of steel fibers is helpful in preventing spalling, and significantly improves the ductility and the cracking behavior of recycled aggregate concrete (RAC) after exposure to high temperatures, which is favorable for the application of RAC in building construction.

[1]  Mohamad J. Terro,et al.  Properties of concrete made with recycled crushed glass at elevated temperatures , 2006 .

[2]  Claudio Javier Zega,et al.  Recycled concrete made with different natural coarse aggregates exposed to high temperature , 2009 .

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

[4]  Jianzhuang Xiao,et al.  An overview of study on recycled aggregate concrete in China (1996-2011) , 2012 .

[5]  Jianzhuang Xiao,et al.  Study on concrete at high temperature in China--an overview , 2004 .

[6]  Hyun-Do Yun,et al.  Compressive behavior of reinforced concrete columns with recycled aggregate under uniaxial loading , 2012 .

[7]  Masafumi Narikawa,et al.  Application of recycled coarse aggregate by mixture to concrete construction , 2007 .

[8]  Chi Sun Poon,et al.  COMPRESSIVE BEHAVIOR OF FIBER REINFORCED HIGH-PERFORMANCE CONCRETE SUBJECTED TO ELEVATED TEMPERATURES , 2004 .

[9]  Luke Bisby,et al.  Strengthening fire-damaged concrete by confinement with fibre-reinforced polymer wraps , 2011 .

[10]  Jianzhuang Xiao,et al.  Shear transfer across a crack in recycled aggregate concrete , 2012 .

[11]  Metin Hüsem,et al.  The effects of high temperature on compressive and flexural strengths of ordinary and high-performance concrete , 2006 .

[12]  Xuping Li,et al.  Recycling and reuse of waste concrete in China: Part I. Material behaviour of recycled aggregate concrete , 2008 .

[13]  Ying Wang,et al.  Compressive behaviour of hybrid fiber-reinforced reactive powder concrete after high temperature , 2012 .

[14]  Chi Sun Poon,et al.  Enhancing the durability properties of concrete prepared with coarse recycled aggregate , 2012 .

[15]  Şemsi Yazıcı,et al.  Effect of aspect ratio and volume fraction of steel fiber on the mechanical properties of SFRC , 2007 .

[16]  Jianzhuang Xiao,et al.  Theoretical study on mechanical behavior of steel confined recycled aggregate concrete , 2012 .

[17]  Salman Azhar,et al.  Comparison of the strength and durability performance of normal- and high-strength pozzolanic concretes at elevated temperatures , 2001 .

[18]  J. de Brito,et al.  Post-fire residual mechanical properties of concrete made with recycled concrete coarse aggregates , 2011 .

[19]  Pierre Kalifa,et al.  High-temperature behaviour of HPC with polypropylene fibres: From spalling to microstructure , 2001 .

[20]  K. Sideris,et al.  Influence of elevated temperatures on the mechanical properties of blended cement concretes prepared with limestone and siliceous aggregates , 2005 .

[21]  Andrzej Ajdukiewicz,et al.  Influence of recycled aggregates on mechanical properties of HS/HPC , 2002 .

[22]  Lin-Hai Han,et al.  Experimental behaviour of recycled aggregate concrete filled steel tubular columns , 2006 .

[23]  Tao Jiang.  FRP-confined RC columns : analysis, behavior and design , 2008 .

[24]  C. Poon,et al.  USE OF RECYCLED AGGREGATES IN MOLDED CONCRETE BRICKS AND BLOCKS , 2002 .

[25]  M. Sultan,et al.  EFFECT OF TEMPERATURE ON THERMAL PROPERTIES OF HIGH-STRENGTH CONCRETE , 2003 .

[26]  Jianzhuang Xiao,et al.  Experimental study on the failure mechanism of recycled concrete , 2011 .

[27]  Jianzhuang Xiao,et al.  On residual strength of high-performance concrete with and without polypropylene fibres at elevated temperatures , 2006 .

[28]  Andrew Dawson,et al.  Microstructure-linked strength properties and impact response of conventional and recycled concrete reinforced with steel and synthetic macro fibres , 2011 .

[29]  Puneet Arora,et al.  Multi-response optimization of post-fire residual compressive strength of high performance concrete , 2013 .

[30]  A. M. Brandt,et al.  Fibre reinforced cement-based (FRC) composites after over 40 years of development in building and civil engineering , 2008 .

[31]  Chuanzeng Zhang,et al.  Mechanical Properties of Recycled Aggregate Concrete Under Uniaxial Loading , 2005 .

[32]  Y. Tai,et al.  Mechanical properties of steel fiber reinforced reactive powder concrete following exposure to high temperature reaching 800 ◦ C , 2011 .

[33]  Chi Sun Poon,et al.  Influence of recycled aggregates on long term mechanical properties and pore size distribution of concrete , 2011 .

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

[35]  M. Anson,et al.  Effect of high temperatures on high performance steel fibre reinforced concrete , 2006 .

[36]  Ying Wang,et al.  Compressive stress–strain relationship of steel fiber-reinforced reactive powder concrete after exposure to elevated temperatures , 2012 .

[37]  Ahmet Çavdar,et al.  A study on the effects of high temperature on mechanical properties of fiber reinforced cementitious composites , 2012 .

[38]  Wen-Wu Yang,et al.  Explosive spalling and residual mechanical properties of fiber-toughened high-performance concrete subjected to high temperatures , 2006 .

[39]  Jacek Katzer,et al.  Quality and mechanical properties of engineered steel fibres used as reinforcement for concrete , 2012 .

[40]  C. Tam,et al.  Microstructural analysis of recycled aggregate concrete produced from two-stage mixing approach , 2005 .

[41]  Toshiro Kamada,et al.  Study of mechanisms of explosive spalling in high-strength concrete at high temperatures using acoustic emission , 2012 .

[42]  Salman Azhar,et al.  Strength and durability recovery of fire-damaged concrete after post-fire-curing , 2001 .

[43]  François Buyle-Bodin,et al.  Efficiency of polypropylene and metallic fibres on control of shrinkage and cracking of recycled aggregate mortars , 1999 .

[44]  Mark F. Green,et al.  Residual strength of concrete containing recycled materials after exposure to fire: A review , 2013 .

[45]  K. Sagoe-Crentsil,et al.  Performance of concrete made with commercially produced coarse recycled concrete aggregate , 2001 .

[46]  Jie Yang,et al.  Mechanical properties of confined recycled aggregate concrete under axial compression , 2012 .

[47]  Hui Li,et al.  Effect of High Temperature on Residual Mechanical Properties of Confined and UnconfinedHigh-Strength Concrete , 2002 .

[48]  Xuping Li,et al.  Recycling and reuse of waste concrete in China: Part II. Structural behaviour of recycled aggregate concrete and engineering applications , 2009 .

[49]  Chuanzeng Zhang,et al.  Fire Damage and Residual Strengths of Recycled Aggregate Concrete , 2007 .

[50]  Claudio Javier Zega,et al.  Recycled concrete exposed to high temperatures , 2006 .

[51]  Cengiz Duran Atiş,et al.  Properties of steel fiber reinforced fly ash concrete , 2009 .

[52]  Y. Mohammadi,et al.  Properties of steel fibrous concrete containing mixed fibres in fresh and hardened state , 2008 .

[53]  Binsheng Zhang.  Effects of moisture evaporation (weight loss) on fracture properties of high performance concrete su , 2011 .