A Comprehensive Experimental Investigation on Flexural Behavior of Alccofine-based Engineered Concrete Infused with Steel Fibers

Document Type : Regular Paper

Authors

1 Ph.D. Research Scholar, School of Civil Engineering, REVA University, Bengaluru, Karnataka, India

2 Associate Professor, Department of Civil Engineering, APS College of Engineering, Bangalore, Karnataka, India

3 Professor, School of Civil Engineering, REVA University, Bengaluru, Karnataka, India

Abstract

Alccofine is an ultrafine supplementary cementitious material with an inherent tendency for pore refinement. This has substantially enhanced the strength and durability properties of concrete. The studies so far have exhibited limited investigations on the flexural properties of Alccofine-based concrete. This study addresses the feasibility of Alccofine-based concrete as a structural material with enhanced flexural properties by infusing 0.5% steel fibers. The steel fibers impart tensile strength to the concrete at the micro level and improve the flexural strength of the RC beams. The combinations framed in this study were for M30 grade concrete with the replacement of Alccofine by 5 to 15% and fly ash by 30% by weight of cement. The steel fibers with 0.5% of the weight of cement were added to the mix. The % of steel fibers and fly ash was kept constant in all the design mix combinations to examine the contribution of Alccofine individually on the performance of concrete. By considering four sets of combinations with under-reinforced and over-reinforced conditions each for the RC beams, the optimum combination among the defined mixes was explored through experimentation. The results on Young’s modulus, relative stiffness, and ductility index of these mixes, emphasize the role of steel fibers in upgrading the deficiency of concrete to resist flexural loads. This engineered concrete matrix with reinforcement exhibits remarkable performance for the combination of 15% Alccofine with 0.5% steel fibers, among the defined combinations. The addition of 0.5% steel fibers in combination with 10% Alccofine replacement to cement has facilitated the effective transfer of tensile stresses generated at the cracked surfaces by bridging the cracks, thereby the flexural strength of the RC beams has an improvement. The mechanism has appreciable outputs in enhancing the tensile behavior of concrete at the micro level.

Graphical Abstract

A Comprehensive Experimental Investigation on Flexural Behavior of Alccofine-based Engineered Concrete Infused with Steel Fibers

Highlights

  • The ultrafine Alccofine particles significantly contribute to the pre-packing of concrete pores.
  • The Alccofine with steel fibers will extend the applications of Alccofine-based engineered mixes practically.
  • The 10% replacement of Alccofine with 0.5% steel fibers holds to be the best performer combination.

Keywords

Main Subjects

References

[1]      Parveen, Singhal D, Junaid MT, Jindal BB, Mehta A. Mechanical and microstructural properties of fly ash based geopolymer concrete incorporating alccofine at ambient curing. Constr Build Mater 2018;180:298–307. doi:10.1016/j.conbuildmat.2018.05.286.
[2]      Kavyateja BV, Guru Jawahar J, Sashidhar C. Effectiveness of alccofine and fly ash on mechanical properties of ternary blended self compacting concrete. Mater Today Proc 2020;33:73–9. doi:10.1016/j.matpr.2020.03.152.
[3]      Mahmod M, Hanoon AN, Abed HJ. Flexural behavior of self-compacting concrete beams strengthened with steel fiber reinforcement. J Build Eng 2018;16:228–37. doi:10.1016/j.jobe.2018.01.006.
[4]      Turk K, Bassurucu M, Bitkin RE. Workability, strength and flexural toughness properties of hybrid steel fiber reinforced SCC with high-volume fiber. Constr Build Mater 2021;266:120944. doi:10.1016/j.conbuildmat.2020.120944.
[5]      El-Dieb AS, Reda Taha MM. Flow characteristics and acceptance criteria of fiber-reinforced self-compacted concrete (FR-SCC). Constr Build Mater 2012;27:585–96. doi:10.1016/j.conbuildmat.2011.07.004.
[6]      Sagar B, M.V.N. S. Mechanical and Microstructure Characterization of Alccofine Based High Strength Concrete. Silicon 2022;14:795–813. doi:10.1007/s12633-020-00863-x.
[7]      Mujawar, S., & Patil V. Effect of Styrene-Butadiene-Rubber (SBR) Latex on Compressive Strength of High -Performance Concrete 2020.
[8]      R B, J S. Effect of Alccofine and GGBS Addition on the Durability of Concrete. Civ Eng J 2019;5:1273–88. doi:10.28991/cej-2019-03091331.
[9]      Pawar MS, Saoji AC. Effect of alccofine on self compacting concrete. Int J Eng Sci 2013;2:5–9.
[10]    Sumathi A, Gowdham K, Mohan KSR. Strength and durability studies on alccofine concrete with micro steel fibres. Rev Rom Mater 2018;48:58–63.
[11]    Prithiviraj C, Saravanan J, Ramesh Kumar D, Murali G, Vatin NI, Swaminathan P. Assessment of Strength and Durability Properties of Self-Compacting Concrete Comprising Alccofine. Sustainability 2022;14:5895. doi:10.3390/su14105895.
[12]    Sagar B, Sivakumar MVN. Use of alccofine-1203 in concrete: review on mechanical and durability properties. Int J Sustain Eng 2021;14:2060–73. doi:10.1080/19397038.2021.1970275.
[13]    Standard I. oa QØhV feJ vuq ikru - ekxZ n’khZ fl¼ka r ( nw ljk iq ujh{k.k ) Concrete Mix Proportioning - Guidelines ( Second Revision ) Hkkjrh; ekud 2019.
[14]    Aslani F, Nejadi S. Mechanical properties of conventional and self-compacting concrete: An analytical study. Constr Build Mater 2012;36:330–47. doi:10.1016/j.conbuildmat.2012.04.034.
[15]    Ramesh B, Gokulnath V, Ranjith Kumar M. Detailed study on flexural strength of polypropylene fiber reinforced self-compacting concrete. Mater Today Proc 2020;22:1054–8. doi:10.1016/j.matpr.2019.11.292.
[16]    Ning X, Ding Y, Zhang F, Zhang Y. Experimental study and prediction model for flexural behavior of reinforced SCC beam containing steel fibers. Constr Build Mater 2015;93:644–53. doi:10.1016/j.conbuildmat.2015.06.024.
[17]    Kaya M. Effect of Steel Fiber Additive on High Temperature Resistance in Geopolymer Mortars. Iran J Sci Technol Trans Civ Eng 2022;46:1949–67. doi:10.1007/s40996-021-00798-2.
[18]    Köksal F, Rao KS, Babayev Z, Kaya M. Effect of Steel Fibres on Flexural Toughness of Concrete and RC Beams. Arab J Sci Eng 2022;47:4375–84. doi:10.1007/s13369-021-06113-5.
[19]    Sabbaghian M, Kheyroddin A. The relationship between compressive strength and splitting tensile strength of high-performance fiber-reinforced cementitious composites. J Rehabil Civ Eng 2023;11:1–21.
[20]    Ahmad J, Majdi A, Babeker Elhag A, Deifalla AF, Soomro M, Isleem HF, et al. A Step towards Sustainable Concrete with Substitution of Plastic Waste in Concrete: Overview on Mechanical, Durability and Microstructure Analysis. Crystals 2022;12:944. doi:10.3390/cryst12070944.

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History

  • Receive Date: 20 June 2024
  • Revise Date: 20 August 2024
  • Accept Date: 05 November 2024

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