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Conformity of steel rebar used for reinforced concrete in Nigeria to the British Standards’ Benchmarks

Ede, A. N. and Olofinnade, O. M. and Oyebisi, S.O and Akpabot, Akpabot Ifiok and Oluwafemi, John and Oyeyemi, Kehinde D. (2019) Conformity of steel rebar used for reinforced concrete in Nigeria to the British Standards’ Benchmarks. ANALELE UNIVERSITĂŢII “EFTIMIE MURGU” REŞIŢA. pp. 67-75. ISSN 1453 - 7397

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Selection of construction materials are normally based on their ability to support design loads all through the service life of the structure to be built. For a reinforced concrete structure, the prime choices fall on the quality of concrete and steel reinforcing bars. Concrete is a composite of cement matrix which fills the space between aggregates and binds them together. Concrete quality fluctuates considerably for various reasons such as immense variability of constituent materials’ properties, the skill of the producer, placement procedure and environmental issues. Concrete is universally accepted for its excellent compressive strength. Concrete’s poor tensile strength is normally combined with the high tensile strength of steel reinforcing bar, providing a reinforced concrete composite that is universally accepted for construction. Steel is manufactured in specialized plants and the properties are controlled and certified by the manufacturer. The designer is, therefore, more confident in specifying steel quality complying with a relevant standard, while the choice of concrete mixes is not easy. Nevertheless, concrete and steel complement each other, compensating the weaknesses in the properties of the two materials, thereby making it a universal accepted construction material that has built the world’s most buildings and infrastructure. But due to the frequent cases of the collapse of reinforced concrete buildings and infrastructure in Nigeria, a study of the properties of steel samples available in Nigeria is essential. The scope of this research is on factors that influence the ductility of reinforced concrete, i.e., the properties of steel rebar. This study considers the yield strength and the chemical properties of the three most common diameters of steel rebar used in Nigeria. The results show some deviations in mechanical characteristics and chemical properties of some of the samples. This confirms that some of the samples fell short of the BS codes’ benchmarks for steel rebar.

Item Type: Article
Uncontrolled Keywords: Concrete, Steel Rebar, Reinforced Concrete, Building Collapse, Ductility, Yield Strength
Subjects: Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 19 Nov 2020 12:38
Last Modified: 19 Nov 2020 12:38

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