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Research Article

Empirical equations for prediction of split tensile and flexural strength of high strength concrete including effect of steel fiber

P.N. Ojha, Brijesh Singh, Pranay Singh

Centre for Construction Development and Research, National Council for Cement and Building Materials, India

Keywords

Abstract



High Strength Concrete;

Flexural Strength;

Split Tensile Strength;

International Code;

Empirical Equation


The current Indian Standard IS: 456-2000 has the equation for prediction of flexural strength which is valid only up to concrete strength of 55 MPa and with introduction of High Strength Concrete (HSC) in the standard, there is need to develop equation and relationship which can predict flexural and split tensile strength of HSC including the effect of steel fibres. This study is aimed to develop relationship between the ratios of split tensile to flexural strength which is applicable to concrete having strength range from 15 MPa to 150 MPa. The study is done by analyzing experimentally obtained test results of a total 120 specimens for flexural strength and 120 specimens for split tensile strength. Further study is also conducted on steel fibre reinforced concrete samples by analyzing experimentally obtained test results of a total 24 specimens for flexural strength and 30 specimens for split tensile strength. The results obtained from the test are compared with empirical equations given by International standards and literatures. On the basis of analysis of results, ratio of split tensile strength to flexural strength is recommended for concrete with and without steel fibre having wide strength range from 100 to 120 MPa. Empirical equations for prediction of spilt tensile and flexure strength of normal to high strength concrete is proposed and applicability of proposed equation for evaluation for normal to high strength steel fiber reinforced concrete is also discussed.

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09/03/2022 Outstanding Reviewer Award: The reviewers are the anonymous heroes of the publishing society. Reviewing manuscripts is not an easy task but it is critical to the advancement of scientific knowledge. Even if authors take credit for publishing papers, the recognition of the reviewers are highly limited for their work. Therefore, our journal announces the reviewers that participated in editorial processes of the submitted articles in a yearly basis. Now, we expand our efforts to appreciate the valuable contribution of our reviewers and start to give Outstanding Reviewer Awards.


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29/12/2021 Best Paper Award: According to the Advisory Board decision, the paper authored by Sahar Ismail, Wassim Raphael, Emmanuel Durand entitled as “Case study of the Beirut port explosion using 3D laser scan and nonlinear finite element model” is awarded the 2021 Best Paper Award of Research on Engineering Structures and Materials (RESM). We congratulate the authors and wish them a continued success.  



29/12/2021 Most Cited Paper Award: According to the Editorial Board evaluation, the paper authored by Sinan Kutluay, Orhan Baytar, Ömer Şahin entitled as “Adsorption kinetics, equilibrium and thermodynamics
of gas-phase toluene onto char produced from almond shells" is awarded the 2021 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM). We congratulate the authors and wish them a continued success.


(More details of the news may be given in the News section)


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LATEST AWARDS


2021 Best Paper Award:

The paper authored by Sahar Ismail, Wassim Raphael, Emmanuel Durand entitled as “Case study of the Beirut port explosion using 3D laser scan and nonlinear finite element model” is awarded the 



2021 Most Cited Paper Award:

The paper authored by Sinan Kutluay, Orhan Baytar, Ömer Şahin entitled as “Adsorption kinetics, equilibrium and thermodynamics of gas-phase toluene onto char produced from almond shells" is awarded the


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Last Update:

28.09.2022

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