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Elastic properties of RCC under flexural loading-experimental and analytical approach

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Abstract

In structural analysis, especially in indeterminate structures, it becomes essential to know material and geometrical properties of members. The codal provisions recommend elastic properties of concrete and steel and these are fairly accurate enough. The stress–strain curve for concrete cylinder or a cube specimen is plotted. The slope of this curve is modulus of elasticity of plain concrete. Another method of determining modulus of elasticity of concrete is by flexural test of a beam specimen. The modulus of elasticity most commonly used for concrete is secant modulus. The modulus of elasticity of steel is obtained by performing a tension test of steel bar. While performing analysis by any software for high rise building, cross area of plain concrete is taken into consideration whereas effects of reinforcement bars and concrete confined by stirrups are neglected. The aim of study is to determine elastic properties of reinforced cement concrete material. Two important stiffness properties such as AE and EI play important role in analysis of high rise RCC building idealized as plane frame. The experimental programme consists of testing of beams (model size 150 × 150 × 700 mm) with percentage of reinforcement varying from 0.54 to 1.63%. The experimental results are verified by using 3D finite element techniques. This study refers to the effect of variation of percentage of main longitudinal reinforcement and concrete grade. Effect of confinement is not considered and it appears in a separate study.

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Acknowledgements

The experiments were carried out under the research project funded by University of Pune. The authors are thankful to University of Pune for the financial support. The authors also thank Sinhgad College of Engineering, Pune for all the facility to carry out experiments in the laboratory.

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Authors and Affiliations

  1. Sinhgad College of Engineering, Pune, India

    S K KULKARNI, M R SHIYEKAR, S M SHIYEKAR & B WAGH

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  1. S K KULKARNI
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  2. M R SHIYEKAR
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  3. S M SHIYEKAR
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  4. B WAGH
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Correspondence to S K KULKARNI.

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KULKARNI, S.K., SHIYEKAR, M.R., SHIYEKAR, S.M. et al. Elastic properties of RCC under flexural loading-experimental and analytical approach. Sadhana 39, 677–697 (2014). https://doi.org/10.1007/s12046-014-0245-6

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  • DOI: https://doi.org/10.1007/s12046-014-0245-6

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