Experimental Study of the Creep Effect on the Mechanical Properties of Concrete

Available researches regarding the effect of a sustained load on concrete are limited and sometimes contradictory. In the specific context of prestressed concrete and more generally for all other concrete structures, the effect of creep on the residual mechanical properties of concrete must be close...

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Main Authors: Zainab Kammouna, Matthieu Briffaut, Yann Malecot
Format: Article
Language:English
Published: Hindawi Limited 2019-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2019/5907923
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spelling doaj-418c7da0f2df47eeaf64b952f78813c52020-11-24T22:11:41ZengHindawi LimitedAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/59079235907923Experimental Study of the Creep Effect on the Mechanical Properties of ConcreteZainab Kammouna0Matthieu Briffaut1Yann Malecot2Univ. Grenoble Alpes, CNRS, Grenoble INP, 3SR, 38000 Grenoble, FranceUniv. Grenoble Alpes, CNRS, Grenoble INP, 3SR, 38000 Grenoble, FranceUniv. Grenoble Alpes, CNRS, Grenoble INP, 3SR, 38000 Grenoble, FranceAvailable researches regarding the effect of a sustained load on concrete are limited and sometimes contradictory. In the specific context of prestressed concrete and more generally for all other concrete structures, the effect of creep on the residual mechanical properties of concrete must be closely studied in order to accurately estimate the residual load capacity of a structure. In this study, therefore, sealed concrete specimens were subjected to sustained compressive and tensile loads; then, at the end of each creep test, the mechanical properties were investigated. Results revealed that when applied at a young age (1 month), the compressive creep load leads to an improvement in both compressive strength and elastic modulus. Conversely, when the load is applied at a later age (3 months), the creep strain acts to lower strength while it has almost no effect on the elastic modulus. The tensile creep was also studied for a single loading age (1 month); creep at this low loading level was found to increase tensile strength yet exerted a negligible visible effect when applied at a high loading level. Hence, the most important conclusion of this study is that the effect of creep on mechanical properties of concrete strongly depends on both loading age and loading direction.http://dx.doi.org/10.1155/2019/5907923
collection DOAJ
language English
format Article
sources DOAJ
author Zainab Kammouna
Matthieu Briffaut
Yann Malecot
spellingShingle Zainab Kammouna
Matthieu Briffaut
Yann Malecot
Experimental Study of the Creep Effect on the Mechanical Properties of Concrete
Advances in Civil Engineering
author_facet Zainab Kammouna
Matthieu Briffaut
Yann Malecot
author_sort Zainab Kammouna
title Experimental Study of the Creep Effect on the Mechanical Properties of Concrete
title_short Experimental Study of the Creep Effect on the Mechanical Properties of Concrete
title_full Experimental Study of the Creep Effect on the Mechanical Properties of Concrete
title_fullStr Experimental Study of the Creep Effect on the Mechanical Properties of Concrete
title_full_unstemmed Experimental Study of the Creep Effect on the Mechanical Properties of Concrete
title_sort experimental study of the creep effect on the mechanical properties of concrete
publisher Hindawi Limited
series Advances in Civil Engineering
issn 1687-8086
1687-8094
publishDate 2019-01-01
description Available researches regarding the effect of a sustained load on concrete are limited and sometimes contradictory. In the specific context of prestressed concrete and more generally for all other concrete structures, the effect of creep on the residual mechanical properties of concrete must be closely studied in order to accurately estimate the residual load capacity of a structure. In this study, therefore, sealed concrete specimens were subjected to sustained compressive and tensile loads; then, at the end of each creep test, the mechanical properties were investigated. Results revealed that when applied at a young age (1 month), the compressive creep load leads to an improvement in both compressive strength and elastic modulus. Conversely, when the load is applied at a later age (3 months), the creep strain acts to lower strength while it has almost no effect on the elastic modulus. The tensile creep was also studied for a single loading age (1 month); creep at this low loading level was found to increase tensile strength yet exerted a negligible visible effect when applied at a high loading level. Hence, the most important conclusion of this study is that the effect of creep on mechanical properties of concrete strongly depends on both loading age and loading direction.
url http://dx.doi.org/10.1155/2019/5907923
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AT matthieubriffaut experimentalstudyofthecreepeffectonthemechanicalpropertiesofconcrete
AT yannmalecot experimentalstudyofthecreepeffectonthemechanicalpropertiesofconcrete
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