Post-cracking tensile behaviour of steel-fibre-reinforced roller-compacted-concrete for FE modelling and design purposes

Authors

DOI:

https://doi.org/10.3989/mc.2017.06716

Keywords:

Concrete, Composite, Fibre reinforcement, Metal reinforcement, Waste treatment

Abstract


Fracture of steel-fibre-reinforced-concrete occurs mostly in the form of a smeared crack band undergoing progressive microcracking. For FE modelling and design purposes, this crack band could be characterised by a stress-strain (σ-ε) relationship. For industrially-produced steel fibres, existing methodologies such as RILEM TC 162-TDF (2003) propose empirical equations to predict a trilinear σ-ε relationship directly from bending test results. This paper evaluates the accuracy of these methodologies and their applicability for roller-compacted-concrete and concrete incorporating steel fibres recycled from post-consumer tyres. It is shown that the energy absorption capacity is generally overestimated by these methodologies, sometimes up to 60%, for both conventional and roller-compacted concrete. Tensile behaviour of fibre-reinforced-concrete is estimated in this paper by inverse analysis of bending test results, examining a variety of concrete mixes and steel fibres. A multilinear relationship is proposed which largely eliminates the overestimation problem and can lead to safer designs.

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References

ACI 544.4R (1999) Design considerations for steel fibre reinforced concrete. Amer Concr Inst, USA.

CEB-FIP Model Code (2010) Design Code for Concrete Structures, Volume 1. International Federation for Structural Concrete (fib), Lausanne.

RILEM TC 162-TDF (2003) Test and design methods for steel fibre reinforced concrete, σ-ε design method. Final recommendation. Mater & Struct. 36 [262], 560-567. https://doi.org/10.1617/14007

Tlemat, H.; Pilakoutas, K.; Neocleous, K. (2007) Modelling of SFRC using inverse finite element analysis. Mater & Struct. 39, 221-233. https://doi.org/10.1617/s11527-005-9010-y

Barros, J.A.O.; Cunha, V.M.C.F.; Ribeiro, A.F.; Antunes, J.A.B. (2005) Post-cracking behavior of steel fibre reinforced concrete. Mater & Struct. 38 [275], 47-56. https://doi.org/10.1007/BF02480574

Erol Erdem, HOCHTIEF Construction AG, HOCHTIEF Consult (2003) The flexural behaviour of SFRC beams and slabs: Bending with σ-ε method, RILEM TC 162-TDF Workshop, Bochum, Germany.

Barros, J.; Antunes, J. (2003) Experimental characterization of the flexural behaviour of steel fibre reinforced concrete according to RILEM TC 162-TDF recommendations, RILEM TC 162-TDF Workshop, Bochum, Germany.

Neocleous, K.; Angelakopoulos, H.; Pilakoutas, K.; Guadagnini, M. (2011) Fibre reinforced roller compacted concrete transport pavements. Transport 164 [TR2], 97-109. https://doi.org/10.1680/tran.9.00043

UoS (University of Sheffield) (2005) Thin wire reinforcement for concrete. Br Patent Application No 0130852.7 and 0511012.7, Sheffield, UK.

Neocleous, K.; Pilakoutas, K.; Tlemat, H. (2006) Design issues of concrete reinforced with steel fibres recovered from tyres. ASCE J Mate. Civil Eng 18 [5], 677-685. https://doi.org/10.1061/(ASCE)0899-1561(2006)18:5(677)

Ecolanes (EU FP6 STREP project) (2006-2009) Economical and sustainable pavement infrastructure for surface transport. Contract 031530.

Graeff, AG.; Pilakoutas, K.; Neocleous, K.; Vania, M. (2012) Fatigue resistance and cracking mechanism of concrete pavements reinforced with recycled steel fibres recovered from post-consumer tyres. Eng Struct. 45, 385-395. https://doi.org/10.1016/j.engstruct.2012.06.030

Jafarifar, N. (2012) Shrinkage behaviour of steel-fibre-reinforced-concrete pavements. PhD thesis, University of Sheffield, UK.

Jafarifar, N.; Pilakoutas, K.; Bennett, T. (2014) Moisture transport and drying shrinkage properties of steel-fibre-reinforced-concrete. Constr Build Mater 73 [2014] 41- 50. https://doi.org/10.1016/j.conbuildmat.2014.09.039

Jafarifar, N.; Pilakoutas, K.; Bennett, T. (2015) The effect of shrinkage cracks on the load bearing capacity of steel-fibre-reinforced-concrete. Mater and Struct.

RILEM TC 162-TDF (2002) Test and design methods for steel fiber reinforced concrete. Design of steel fibre reinforced using σ-ε method: principles and applications. Mater.& Struct. 35 [249] 262-278.

BS 8500-1 (2006) Concrete-Complementary British Standard to BS EN 206-1 Part 1: Method of specifying and guidance for the specifier. Br Stand Inst. London.

Prisco, M.di; Colombo, M.; Dozio, D. (2013) Fibre-reinforced concrete in fib Model Code 2010: principles, models and test validation, Structural Concrete 14 [2013], No. 4.

Timoshenko, S.P.; Goodier, J.N. (1970) Theory of elasticity. 3rd Edition, McGraw Hill, New York.

BS EN 14651 (2005) Test method for metallic fibered concrete - Measuring the flexural tensile strength. Br Stand Inst, London, UK.

JSCE-SF4 (1984) Methods of tests for flexural strength and flexural toughness of steel fibre reinforced concrete. Japan Society of Civil Engineers, Concrete Library.

JCI-S-001 (2003) Method of test for fracture energy of concrete by use of notched beam. Japan Concrete Institute Standard.

ASTM C 1018 (1997) Standard test method for flexural toughness and first-crack strength of fibre-reinforced concrete (Using beam with third-point loading). American Standards, USA.

JCI-S-003 (2007) Method of test for bending moment curvature curve of fiber-reinforced cementitious composites. Japan Concrete Institute Standard.

BS EN 12390-3 (2009) Testing of hardened concrete Part 3: Compressive strength of test specimens. Br Stand Inst, London, UK.

Alexander, M.G. (1982) A simple bending test for elastic and rupture moduli for plain concrete and mortar. Concrete/ Beton, South Africa 92 [27], 18-24.

Casanova, P.; Rossi, P. (1997) Analysis and design of steel fibre reinforced concrete beams. ACI Struct J 94 [5], 595-602.

ABAQUS Version 6.10 (2010) Dassault SystËmes Simulia Corp., USA.

Elshaigh, W.A. (2007) Modelling the behaviour of steel fibre reinforced concrete pavements. PhD thesis, University of Pretoria.

Bazant, Z.P.; Oh, B.H. (1983) Crack band theory for fracture of concrete. Mater & Struct. 16 [3], 155-177.

Published

2017-06-30

How to Cite

Jafarifar, N., Pilakoutas, K., Angelakopoulos, H., & Bennett, T. (2017). Post-cracking tensile behaviour of steel-fibre-reinforced roller-compacted-concrete for FE modelling and design purposes. Materiales De Construcción, 67(326), e122. https://doi.org/10.3989/mc.2017.06716

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Section

Research Articles