Effect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete

When the concrete loses its moisture, shrinkage and volume reduction is happening and eventually cracks create and deformations in the concrete are increased. In this study, the effect of polypropylene, steel, glass, basalt and polymer fiber on compressive strength, flexural strength and shrinkage c...

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Autores principales:	Ali Sademomtazi, Behzad Tahmouresi, Ashkan Saradar
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2018
Materias:	fiber high strength concrete crack early-age shrinkage mechanical strength Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/2ea17c4b61f84ada813c0798a8af0edc
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spelling	oai:doaj.org-article:2ea17c4b61f84ada813c0798a8af0edc2021-11-08T15:50:37ZEffect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete2476-39772538-261610.22065/jsce.2017.88262.1223https://doaj.org/article/2ea17c4b61f84ada813c0798a8af0edc2018-10-01T00:00:00Zhttps://www.jsce.ir/article_50146_0b81654b54196610bdebb8ec51c2abbb.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616When the concrete loses its moisture, shrinkage and volume reduction is happening and eventually cracks create and deformations in the concrete are increased. In this study, the effect of polypropylene, steel, glass, basalt and polymer fiber on compressive strength, flexural strength and shrinkage cracks (early ages) of high strength concrete mixtures were evaluated. The restrained shrinkage test was performed on concrete ring specimens with height of 150 mm, inner diameter of 30 mm and outer diameter of 40 mm according to ASTM C 1581 standard. The crack width and age of restrained shrinkage cracking were main parameters studied in this research. The results showed that, adding fiber, caused increases the compressive strength 16%, 20% and 3% at the age of 3, 7 and 28 days respectively, and also, increased flexural toughness index up to 7.7 times. steel and glass fiber provided good performance in flexural strength, but had relatively poor action in the velocity reduction and cracking time of restrained shrinkage. Also, crack in all of concrete ring specimens except polypropylene containing mixture, was developed to full depth crack. The mixture of polypropylene fiber containing showed reduction in crack width up to 62% and increasing age cracking up to 84%.Ali SademomtaziBehzad TahmouresiAshkan SaradarIranian Society of Structrual Engineering (ISSE)articlefiberhigh strength concretecrackearly-age shrinkagemechanical strengthBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 5, Iss 3, Pp 145-159 (2018)
institution	DOAJ
collection	DOAJ
language	FA
topic	fiber high strength concrete crack early-age shrinkage mechanical strength Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	fiber high strength concrete crack early-age shrinkage mechanical strength Bridge engineering TG1-470 Building construction TH1-9745 Ali Sademomtazi Behzad Tahmouresi Ashkan Saradar Effect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete
description	When the concrete loses its moisture, shrinkage and volume reduction is happening and eventually cracks create and deformations in the concrete are increased. In this study, the effect of polypropylene, steel, glass, basalt and polymer fiber on compressive strength, flexural strength and shrinkage cracks (early ages) of high strength concrete mixtures were evaluated. The restrained shrinkage test was performed on concrete ring specimens with height of 150 mm, inner diameter of 30 mm and outer diameter of 40 mm according to ASTM C 1581 standard. The crack width and age of restrained shrinkage cracking were main parameters studied in this research. The results showed that, adding fiber, caused increases the compressive strength 16%, 20% and 3% at the age of 3, 7 and 28 days respectively, and also, increased flexural toughness index up to 7.7 times. steel and glass fiber provided good performance in flexural strength, but had relatively poor action in the velocity reduction and cracking time of restrained shrinkage. Also, crack in all of concrete ring specimens except polypropylene containing mixture, was developed to full depth crack. The mixture of polypropylene fiber containing showed reduction in crack width up to 62% and increasing age cracking up to 84%.
format	article
author	Ali Sademomtazi Behzad Tahmouresi Ashkan Saradar
author_facet	Ali Sademomtazi Behzad Tahmouresi Ashkan Saradar
author_sort	Ali Sademomtazi
title	Effect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete
title_short	Effect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete
title_full	Effect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete
title_fullStr	Effect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete
title_full_unstemmed	Effect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete
title_sort	effect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2018
url	https://doaj.org/article/2ea17c4b61f84ada813c0798a8af0edc
work_keys_str_mv	AT alisademomtazi effectofvariousfiberonearlyageshrinkagecracksandmechanicalstrengthofhighstrengthconcrete AT behzadtahmouresi effectofvariousfiberonearlyageshrinkagecracksandmechanicalstrengthofhighstrengthconcrete AT ashkansaradar effectofvariousfiberonearlyageshrinkagecracksandmechanicalstrengthofhighstrengthconcrete
_version_	1718441645965312000

Effect of various fiber on early- age shrinkage cracks and mechanical strength of high strength concrete

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