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Advances in Concrete Construction Volume 9, Number 1, January 2020 , pages 83-92 DOI: https://doi.org/10.12989/acc.2020.9.1.083 |
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Behavior of tension lap spliced sustainable concrete flexural members |
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Adel A. Al-Azzawi, Raid A. Daud and Sultan A. Daud
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| Abstract | ||
| The use of spliced reinforcing bars in sustainable concrete members to manage inadequate bars length is a common practical issue which is may be due to some limitations. The lap splicing means two bars overlapped in parallel with specified length called the splice length in order to provide the required bond between the two bars. The bond between sustainable concrete and spliced steel bars is another important issue. The normal strength sustainable concrete specimens of sizes 1700x150x150 mm with tension reinforcement lap spliced were selected according to testing device length limitations. These members were designed to fail in flexure in order to investigate the lap spliced tension bars effect. The selected lap spliced tension bars were of 10 mm size with smooth and deformed surfaces in order to investigate the surface nature accompanied with the splice nature. The sustainable concrete mechanical properties and mix workability were also studied. This study reveals that the effect of number of spliced bars on the response of beams reinforced with smooth bars is found to be more obvious than deformed one. Finite element modeling in three dimensions was carried out for the tested beams using ABAQUS software. A parametric study is carried out using finite elements on considering the following parameters, concrete compressive strength, load type and opening in cross section (hollow section) for weight reduction purposes.The laboratory and numerical results show good agreements in terms of ultimate load and deflection with an average difference of 10% and 15% in ultimate load and deflection respectively. | ||
| Key Words | ||
| sustainable concrete; beams; experimental test; finite element analysis; lap-spliced | ||
| Address | ||
| Adel A. Al-Azzawi, Raid A. Daud and Sultan A. Daud: Civil Engineering Department, College of Engineering, Al-Nahrain University, Baghdad, Iraq | ||
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