An experimental study on the post-cracking behaviour of Hybrid Industrial/Recycled Steel Fibre-Reinforced Concrete

Abstract This paper investigates the mechanical behaviour of FRC made with both Industrial and Recycled Steel Fibres recovered from waste tyres. Specimens of various mixtures, characterised by the same volume fraction of fibres, but different proportions of industrial and recycled reinforcement were tested both in compression and bending. The results highlighted a fairly negligible influence of fibres in terms of compressive strength, whereas a significant decay in the post-cracking behaviour was observed in specimens with higher fractions of recycled fibres. However, a significant enhancement in the bending response was observed with respect to the case of plain concrete, even for specimens reinforced by recycled fibres only.

[1]  Parviz Soroushian,et al.  Mechanical properties of hybrid fiber reinforced lightweight aggregate concrete made with natural pumice , 2011 .

[2]  P. Folino,et al.  Experimental and numerical characterization of the bond behavior of steel fibers recovered from waste tires embedded in cementitious matrices , 2015 .

[3]  Antoine E. Naaman,et al.  Proposed classification of HPFRC composites based on their tensile response , 2007 .

[4]  Kyung-Taek Koh,et al.  Tensile behavior of Ultra High Performance Hybrid Fiber Reinforced Concrete , 2012 .

[5]  C. Lima,et al.  Fracture behavior of concrete beams reinforced with mixed long/short steel fibers , 2012 .

[6]  E. Ganjian,et al.  Scrap-tyre-rubber replacement for aggregate and filler in concrete , 2009 .

[7]  Kyriacos Neocleous,et al.  Stress-strain characteristic of SFRC using recycled fibres , 2005 .

[8]  K. Pilakoutas,et al.  Design Issues for Concrete Reinforced with Steel Fibers, Including Fibers Recovered from used Tires , 2006 .

[9]  K. Pilakoutas,et al.  Fatigue resistance and cracking mechanism of concrete pavements reinforced with recycled steel fibres recovered from post-consumer tyres , 2012 .

[10]  Frank Kreith,et al.  Handbook of Solid Waste Management , 2002 .

[11]  M. Aiello,et al.  Use of steel fibres recovered from waste tyres as reinforcement in concrete: pull-out behaviour, compressive and flexural strength. , 2009, Waste management.

[12]  Alberto Meda,et al.  Bending and Uniaxial Tensile Tests on Concrete Reinforced with Hybrid Steel Fibers , 2005 .

[13]  Bettina Mihalyi,et al.  Recycling of Fibre Materials , 2005 .

[14]  M. Ramli,et al.  Mechanical properties of high strength flowing concrete with hybrid fibers , 2012 .

[15]  Jie Li,et al.  Mechanical properties of hybrid fiber-reinforced concrete at low fiber volume fraction , 2003 .

[16]  Helena Janik,et al.  Progress in used tyres management in the European Union: a review. , 2012, Waste management.

[17]  P. Song,et al.  Mechanical properties of polypropylene hybrid fiber-reinforced concrete , 2008 .

[18]  Xiangming Zhou,et al.  Fiber alignment and property direction dependency of FRC extrudate , 2003 .

[19]  M. Aiello,et al.  Steel fibers from waste tires as reinforcement in concrete: A mechanical characterization , 2012 .

[20]  J. Aguiar,et al.  Study on residual behaviour and flexural toughness of fibre cocktail reinforced self compacting high performance concrete after exposure to high temperature , 2011 .

[21]  M. Şahmaran,et al.  Hybrid fiber reinforced self-compacting concrete with a high-volume coarse fly ash , 2007 .

[22]  M. Taşdemi̇r,et al.  Mechanical behaviour and fibre dispersion of hybrid steel fibre reinforced self-compacting concrete , 2012 .

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

[24]  Giovanni Plizzari,et al.  Considerazioni a margine del CNR-DT 204/2006: Istruzioni per la progettazione, l’esecuzione ed il controllo di strutture di calcestruzzo fibrorinforzato , 2006 .

[25]  G. Cornacchia,et al.  Disposal of waste tyres for energy recovery and safe environment , 2000 .

[26]  Kyung-Taek Koh,et al.  Comparative flexural behavior of Hybrid Ultra High Performance Fiber Reinforced Concrete with different macro fibers , 2011 .

[27]  W. H. Yung,et al.  A study of the durability properties of waste tire rubber applied to self-compacting concrete , 2013 .