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Research Article

Strength evaluation of a fire damaged concrete slab: combined correlation approach

Khaled Yaghi*, Housam Hammoud 

Department of Civil & Environmental Engineering, American University of Beirut, Beirut, Lebanon

Keywords

Abstract

Fire damaged concrete,

Strength evaluation, Non-destructive testing,

Destructive testing, porosity,

Pearson’s correlation approach,

Combined correlation,

William’s modification of the Hotelling test

Strength evaluation of fire damaged concrete is not well studied although fire damaged concrete is encountered in many settings. There are limited studies that investigate the effect of physical properties on the strength of fire damaged concrete. In this paper, a fire damaged concrete slab element is evaluated based on non-destructive (rebound hammer and impact pulse velocity) and destructive (core and porosity) testing. Two correlation models are developed to assess the compressive strength of the slab element. The first model correlates the corrected core compressive strength to rebound number, impact pulse velocity and porosity. The second model correlates the corrected core compressive strength to rebound number and impact pulse velocity. Both correlation models are based on Pearson’s statistical approach. The two correlations are compared based on William’s modification of the Hotelling test and results indicate that rebound number, impact pulse velocity and porosity combined correlates more significantly to the corrected core compressive strength than rebound number and impact pulse velocity alone.


 © 2018 MIM Research Group. All rights reserved.

DOI: http://dx.doi.org/10.17515/resm2018.40me0127                          Full Text

LATEST News


21/02/2020 Collaboration for SET 2020: Editorial Board of our journal and Organizing Committee of the 19th International Conference on Sustainable Energy Technologies (SET 2020) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.


25/12/2019 Most Cited Paper Award: The paper authored by Manoj Sahni and Sanjeev Sharma entitled as “Elastic-plastic deformation of a thin rotating solid disk of exponentially varying density" is awarded the 2019 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM).

25/12/2019 Best Paper Award: The paper authored by Marcelo Mesquita do Amaral, Matheus Wanglon Ferreira and Mauro de Vasconcellos Real entitled as “A simplified method for analysis of reinforced concrete beams exposed to fire situation” is awarded the 2019 Best Paper Award of Research on Engineering Structures and Materials (RESM).


13/11/2019 Data articles as a new type of submision: Editorial Board of our journal have decided to accept a new type of submission: data articles. The focus of these papers is only on data and how it is collected but not on its interpretation and drawn conclusions. For more see News section.


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


For more see News...

LATEST AWARDS


2019 Most Cited Paper Award:

The paper authored by Manoj Sahni and Sanjeev Sharma entitled as “Elastic-plastic deformation of a thin rotating solid disk of exponentially varying density" is awarded the


2019 Best Paper Award:

The paper authored by Marcelo Mesquita do Amaral, Matheus Wanglon Ferreira and Mauro de Vasconcellos Real entitled as “A simplified method for analysis of reinforced concrete beams exposed to fire situation” is awarded the 


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Last Update:

24.07.2020

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