An investigation of concrete stress-strain behavior by the image analysis method

Abstract Concrete is a composite load-bearing building material. The deformation behavior of load-bearing materials under load is vital for the building system. Investigation of these brittle and quasi-brittle behavior patterns at various load levels provides an advantage in the evaluation of mechan...

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Autores principales:	Pekgöz,Mahfuz, Günaydın,Osman, Güçlüer,Kadir
Lenguaje:	English
Publicado:	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile 2021
Materias:	concrete stress-strain behavior microstructure image analysis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2021000200308
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spelling	oai:scielo:S0718-915X20210002003082021-09-15An investigation of concrete stress-strain behavior by the image analysis methodPekgöz,MahfuzGünaydın,OsmanGüçlüer,Kadir concrete stress-strain behavior microstructure image analysis Abstract Concrete is a composite load-bearing building material. The deformation behavior of load-bearing materials under load is vital for the building system. Investigation of these brittle and quasi-brittle behavior patterns at various load levels provides an advantage in the evaluation of mechanical properties. In this study, the deformations occurring within the concrete samples in different stress-strain regions were investigated using an image analysis technique. The experimental samples experienced elastic-limit loading for two hours to clearly monitor the deformations at elastic, plastic, and breaking points. For the microstructure studies, the samples were prepared with epoxy for image analysis. Thin-sections were taken from each series of epoxy-impregnated concrete test samples, examined under a microscope, and photographed. Deformation studies on the digital photographs were carried out by the image analysis method. The results show that crack formation and crack types change because of increased stress and deformations. Crack formations within the concrete are parallel to the loading direction and occurred mainly in the aggregate-cement-paste interface. At 85% of the ultimate stress, crack length was measured as 0.665-29.505 mm and crack width 0.180-4.128 mm, while the crack length was 0.305-32.688 mm and crack width were 0.106-2.906 mm at fracture stress.info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.20 n.2 20212021-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2021000200308en10.7764/rdlc.20.2.308
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	concrete stress-strain behavior microstructure image analysis
spellingShingle	concrete stress-strain behavior microstructure image analysis Pekgöz,Mahfuz Günaydın,Osman Güçlüer,Kadir An investigation of concrete stress-strain behavior by the image analysis method
description	Abstract Concrete is a composite load-bearing building material. The deformation behavior of load-bearing materials under load is vital for the building system. Investigation of these brittle and quasi-brittle behavior patterns at various load levels provides an advantage in the evaluation of mechanical properties. In this study, the deformations occurring within the concrete samples in different stress-strain regions were investigated using an image analysis technique. The experimental samples experienced elastic-limit loading for two hours to clearly monitor the deformations at elastic, plastic, and breaking points. For the microstructure studies, the samples were prepared with epoxy for image analysis. Thin-sections were taken from each series of epoxy-impregnated concrete test samples, examined under a microscope, and photographed. Deformation studies on the digital photographs were carried out by the image analysis method. The results show that crack formation and crack types change because of increased stress and deformations. Crack formations within the concrete are parallel to the loading direction and occurred mainly in the aggregate-cement-paste interface. At 85% of the ultimate stress, crack length was measured as 0.665-29.505 mm and crack width 0.180-4.128 mm, while the crack length was 0.305-32.688 mm and crack width were 0.106-2.906 mm at fracture stress.
author	Pekgöz,Mahfuz Günaydın,Osman Güçlüer,Kadir
author_facet	Pekgöz,Mahfuz Günaydın,Osman Güçlüer,Kadir
author_sort	Pekgöz,Mahfuz
title	An investigation of concrete stress-strain behavior by the image analysis method
title_short	An investigation of concrete stress-strain behavior by the image analysis method
title_full	An investigation of concrete stress-strain behavior by the image analysis method
title_fullStr	An investigation of concrete stress-strain behavior by the image analysis method
title_full_unstemmed	An investigation of concrete stress-strain behavior by the image analysis method
title_sort	investigation of concrete stress-strain behavior by the image analysis method
publisher	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2021000200308
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An investigation of concrete stress-strain behavior by the image analysis method

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