Flexural Behavior of High Strength RC Beams Incorporating Nano-Silica and Macro-Polypropylene Fiber

Authors

  • Araz Ali Mohammed Civil Engineering Department, College of Engineering, University of Sulaimani, Sulaymaniyah, Kurdistan Region, Iraq; Civil Engineering Department, College of Engineering, University of Raparin, Rania, Kurdistan Region, Iraq
  • Najmadeen M. Saeed Civil Engineering Department, College of Engineering, University of Raparin, Rania, Kurdistan Region, Iraq; Civil Engineering Department, Faculty of Engineering, Tishk International University, Erbil, Kurdistan Region, Iraq http://orcid.org/0000-0001-7074-0256

DOI:

https://doi.org/10.25079/ukhjse.v6n2y2022.pp83-96

Keywords:

RC Beams, Flexural Strength, Mechanical Properties, Nano-Silica, Polypropylene Fiber

Abstract

This paper investigates the flexural behavior of high-strength RC beams experimentally to assess the effect of Nano-silica (NS) and Macro-Synthetic High Strength Polypropylene Fiber (MPF). Ordinary Portland cement was partially replaced by the NS and MPF with different proportions to produce four concrete mixtures. Tests were conducted on the full-scale high-strength RC beams, including first crack load, failure load, deflection, concrete strain, steel strain, and mode failure, which were examined and compared. In addition, the tests on the mechanical properties of high-strength concrete mixtures were also conducted at the ages of 28 and 56 days. The test results concluded that the addition of NS and MPF significantly improved the first-cracking and failure loads and decreased deflection at levels of cracking and failure loads. Additionally, an increase in NS content resulted in a minor increase in the ultimate strain related to the failure loads. Furthermore, the mix of 3% NS with 0.5% MPF was found to lead to the highest mechanical characteristics of concrete. The improvements were the concrete compressive strength by 33.6%, split tensile strength by up to 54.1%, and flexural strength by up to 28.3% compared with control specimens.

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Author Biography

  • Najmadeen M. Saeed, Civil Engineering Department, College of Engineering, University of Raparin, Rania, Kurdistan Region, Iraq; Civil Engineering Department, Faculty of Engineering, Tishk International University, Erbil, Kurdistan Region, Iraq

    Dr. Najmadeen is an assistant professor of civil/structural engineering in the civil engineering department and head of the engineering consulting office at the University of Raparin. He was graduated as a doctor of civil/structural engineering from Cardiff University-UK in 2014. Dr. Najmadeen has 15 publications (in refereed international journals). He has experience in Force Method, Prestress Analysis, Displacement Control, Optimization, Deployable Structure, Structural Morphology, Foldable Structures, Pantographic Structures, Geometric Nonlinearity, Cable Structure, Cable Nets Structural Optimization, and Shape Optimization.

References

Abousnina, R., Premasiri, S., Anise, V., Lokuge, W., Vimonsatit, V., Ferdous, W. & Alajarmeh, O. (2021). Mechanical Properties of Macro Polypropylene Fibre-Reinforced Concrete. Polymers, 13(23), 4112. DOI: https://doi.org/10.3390/polym13234112.
Ahmed, S., Bukhari, I. A., Siddiqui, J. I. & Qureshi, S. A. (2006). A study on properties of polypropylene fiber reinforced concrete. Paper presented at the 31st Conference on Our World in Concrete and Structures.
Aidarov, S., Nogales, A., Reynvart, I., Tošić, N. & de la Fuente, A. (2022). Effects of Low Temperatures on Flexural Strength of Macro-Synthetic Fiber Reinforced Concrete: Experimental and Numerical Investigation. Materials, 15(3), 1153. DOI: https://doi.org/10.3390/ma15031153.
Akbarpour, S., Dabbagh, H. & Tavakoli, H. R. (2018). The Effects of Steel Fiber and Nano-SiO 2 on the Cyclic Flexural Behavior of Reinforced LWAC Beams. KSCE Journal of Civil Engineering, 22(10), 3919-3930. DOI: https://doi.org/10.1007/s12205-017-0920-3.
Altun, F., Haktanir, T. & Ari, K. (2007). Effects of steel fiber addition on mechanical properties of concrete and RC beams. Construction and building materials, 21(3), 654-661. DOI: https://doi.org/10.1016/j.conbuildmat.2005.12.006.
Amin, M., & Abu el-Hassan, K. (2015). Effect of using different types of nano materials on mechanical properties of high strength concrete. Construction and building materials, 80, 116-124. DOI: https://doi.org/10.1016/j.conbuildmat.2014.12.075.
ASTM-A615. (2020). Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.
ASTM-C33. (2013). Standard specification for concrete aggregates. In: ASTM international West Conshohocken, PA.
ASTM-C39. (2014). Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens: ASTM International.
ASTM-C78. (2010). Standard test method for flexural strength of concrete (using simple beam with third-point loading). Paper presented at the American society for testing and materials.
ASTM-C150. (2016). ASTM C150 standard specification for Portland cement. In: ASTM International West Conshohocken, Pennsylvania.
ASTM-C469. (2014). Standard Test Method for Static Modulus of Elasticity and Poisson's Ratio of Concrete in Compression1: ASTM international.
ASTM-C496. (2017). Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens1: ASTM international.
Bagherzadeh, R., Sadeghi, A.-H. & Latifi, M. (2012). Utilizing polypropylene fibers to improve physical and mechanical properties of concrete. Textile research journal, 82(1), 88-96. DOI: https://doi.org/10.1177%2F0040517511420767.
Ehab, M. & Manar, A. (2017). Flexural behaviour of reinforced concrete beams with nano-metakaolin. International Journal of Latest Trends in Engineering and Technology, 8(8), 231-240.
Fallah, S. & Nematzadeh, M. (2017). Mechanical properties and durability of high-strength concrete containing macro-polymeric and polypropylene fibers with nano-silica and silica fume. Construction and building materials, 132, 170-187. DOI: https://doi.org/10.1016/j.conbuildmat.2016.11.100.
Lee, J.-H., Cho, B., Choi, E. & Kim, Y.-H. (2016). Experimental study of the reinforcement effect of macro-type high strength polypropylene on the flexural capacity of concrete. Construction and building materials, 126, 967-975. DOI: https://doi.org/10.1016/j.conbuildmat.2016.09.017.
Mashrei, M., Sultan, A. A. & Mahdi, A. M. (2018). Effects of polypropylene fibers on compressive and flexural strength of concrete material. Int. J. Civ. Eng. Technol, 9(11), 2208-2217.
Mtasher, R. A., Abbas, A. M. & Ne'ma, N. H. (2011). Strength prediction of polypropylene fiber reinforced concrete. Engineering and Technology journal, 29(2), 305-311.
Mustafa, T. S., El Hariri, M. O., Khalafalla, M. S. & Said, Y. (2020). Application of nanosilica in reinforced concrete beams. Proceedings of the Institution of Civil Engineers-Structures and Buildings, 1-10. DOI: https://doi.org/10.1680/jstbu.19.00170.
Rahmani, K., Ghaemian, M. & Hosseini, S. A. (2019). Experimental study of the effect of water to cement ratio on mechanical and durability properties of Nano-silica concretes with Polypropylene fibers. Scientia Iranica, 26(5), 2712-2722. DOI: https://dx.doi.org/10.24200/sci.2017.5077.1079.
RAS, M. (2006). Effect of polypropylene fibers on the mechanical properties of normal concrete. JES. Journal of Engineering Sciences, 34(4), 1049-1059.
Rashmi, R. & Padmapriya, R. (2021). Experimental and analytical study on flexural behavior of reinforced concrete beams using nano silica. Materials Today: Proceedings. DOI: https://doi.org/10.1016/j.matpr.2021.04.127.
Shi, K., Zhang, M., Zhang, T., Xue, R., Li, P. & Chen, G. (2021). Study on Flexural Performance of Concrete Beams Reinforced by Steel Fiber and Nano–SiO2 Materials. Crystals, 11(8), 927. DOI: https://doi.org/10.3390/cryst11080927.
Sridhar, J., Vivek, D., Jagatheeswaran, D. J. I. J. o. E. & Technology, A. (2019). Mechanical and Flexural Behaviour of High performance concrete containing Nano Silica. 9(2).
Yazdanbakhsh, A., Altoubat, S. & Rieder, K.-A. (2015). Analytical study on shear strength of macro synthetic fiber reinforced concrete beams. Engineering Structures, 100, 622-632. DOI: https://doi.org/10.1016/j.engstruct.2015.06.034.
Zhang, P., Sha, D., Li, Q., Zhao, S. & Ling, Y. (2021). Effect of Nano Silica Particles on Impact Resistance and Durability of Concrete Containing Coal Fly Ash. Nanomaterials, 11(5), 1296.
Zhang, P., Zhang, H., Cui, G., Yue, X., Guo, J. & Hui, D. (2021). Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2. Nanotechnology Reviews, 10(1), 504-517. DOI: https://doi.org/10.1515/ntrev-2021-0040.

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Published

2022-12-27

Issue

Vol. 6 No. 2 (2022): ISSUE 11

Section

Research Articles

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How to Cite

Flexural Behavior of High Strength RC Beams Incorporating Nano-Silica and Macro-Polypropylene Fiber. (2022). UKH Journal of Science and Engineering, 6(2), 83-96. https://doi.org/10.25079/ukhjse.v6n2y2022.pp83-96