An experimental investigation on bending stiffness and neutral axis depth variation of over-reinforced high strength concrete beams
The present work is an attempt to study the neutral axis variation and the evolution of the moment inertia with the loading of over reinforced high strength concrete sections in conjunction with ACI 318-05. In this sense, four high strength concrete beams, having different tension reinforcement quan...
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| Format: | Article |
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Nuclear Engineering and Design
2011
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| author | Mohammadhassani, M. Jumaat, Mohd Zamin Chemrouk, M. Maghsoudi, A.A. Jameel, M. Akib, S. |
| author_facet | Mohammadhassani, M. Jumaat, Mohd Zamin Chemrouk, M. Maghsoudi, A.A. Jameel, M. Akib, S. |
| author_sort | Mohammadhassani, M. |
| collection | UM |
| description | The present work is an attempt to study the neutral axis variation and the evolution of the moment inertia with the loading of over reinforced high strength concrete sections in conjunction with ACI 318-05. In this sense, four high strength concrete beams, having different tension reinforcement quantities expressed as proportions of the balanced steel ratio (0.75� b, 0.85� b, � b, 1.2� b) were tested. Measurements of the deflection and the reinforcement and concrete strains of all specimens were made during the loading process. The load-neutral axis depth variation and the load-section stiffness curves were drawn. The slope of the line connecting the origin of the first crack to the initial yielding of the failure point in the neutral axis depth-load graphs shows the rate of ductility; ductile behaviour in the beam increases as the slope becomes steeper. Based on the results of this study, it is recommended that the modulus of elasticity of concrete E c be reviewed and evaluated at a stress higher than 0.5 f� c for the determination of the cracked moment of inertia. |
| first_indexed | 2024-03-06T05:15:39Z |
| format | Article |
| id | um.eprints-5956 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:15:39Z |
| publishDate | 2011 |
| publisher | Nuclear Engineering and Design |
| record_format | dspace |
| spelling | um.eprints-59562020-02-05T04:30:24Z http://eprints.um.edu.my/5956/ An experimental investigation on bending stiffness and neutral axis depth variation of over-reinforced high strength concrete beams Mohammadhassani, M. Jumaat, Mohd Zamin Chemrouk, M. Maghsoudi, A.A. Jameel, M. Akib, S. TA Engineering (General). Civil engineering (General) The present work is an attempt to study the neutral axis variation and the evolution of the moment inertia with the loading of over reinforced high strength concrete sections in conjunction with ACI 318-05. In this sense, four high strength concrete beams, having different tension reinforcement quantities expressed as proportions of the balanced steel ratio (0.75� b, 0.85� b, � b, 1.2� b) were tested. Measurements of the deflection and the reinforcement and concrete strains of all specimens were made during the loading process. The load-neutral axis depth variation and the load-section stiffness curves were drawn. The slope of the line connecting the origin of the first crack to the initial yielding of the failure point in the neutral axis depth-load graphs shows the rate of ductility; ductile behaviour in the beam increases as the slope becomes steeper. Based on the results of this study, it is recommended that the modulus of elasticity of concrete E c be reviewed and evaluated at a stress higher than 0.5 f� c for the determination of the cracked moment of inertia. Nuclear Engineering and Design 2011 Article PeerReviewed Mohammadhassani, M. and Jumaat, Mohd Zamin and Chemrouk, M. and Maghsoudi, A.A. and Jameel, M. and Akib, S. (2011) An experimental investigation on bending stiffness and neutral axis depth variation of over-reinforced high strength concrete beams. Nuclear Engineering and Design, 241 (6). pp. 2060-2067. ISSN 0029-5493, DOI https://doi.org/10.1016/j.nucengdes.2011.02.022 <https://doi.org/10.1016/j.nucengdes.2011.02.022>. http://ac.els-cdn.com/S0029549311001567/1-s2.0-S0029549311001567-main.pdf?_tid=b39cf998-593a-11e2-a295-00000aacb35d&acdnat=1357612123_4cbb1d16207bb3e1f680aa6cbd5f8495 10.1016/j.nucengdes.2011.02.022 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Mohammadhassani, M. Jumaat, Mohd Zamin Chemrouk, M. Maghsoudi, A.A. Jameel, M. Akib, S. An experimental investigation on bending stiffness and neutral axis depth variation of over-reinforced high strength concrete beams |
| title | An experimental investigation on bending stiffness and neutral axis depth variation of over-reinforced high strength concrete beams |
| title_full | An experimental investigation on bending stiffness and neutral axis depth variation of over-reinforced high strength concrete beams |
| title_fullStr | An experimental investigation on bending stiffness and neutral axis depth variation of over-reinforced high strength concrete beams |
| title_full_unstemmed | An experimental investigation on bending stiffness and neutral axis depth variation of over-reinforced high strength concrete beams |
| title_short | An experimental investigation on bending stiffness and neutral axis depth variation of over-reinforced high strength concrete beams |
| title_sort | experimental investigation on bending stiffness and neutral axis depth variation of over reinforced high strength concrete beams |
| topic | TA Engineering (General). Civil engineering (General) |
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