Study of the fresh and hardened properties of fiber self-compacting concrete

Self-compacting concrete (SCC). was developed about four decades before since that time it has been used very scarcely due to a number of problems including : separation, lack of flowability and filling ability, high cracking potential, and thereupon low compressive and tensile strength. In this stu...

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Autores principales:	sasan motaghed, mehdi ghobadi, mahbobeh mirzaie Aliabadi, Yadollah Gharayebi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2019
Materias:	vma polypropylene fibers hook end steel fibers cracking slab Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/143bd46ae74848958df6966c16c15b56
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spelling	oai:doaj.org-article:143bd46ae74848958df6966c16c15b562021-11-08T15:52:56ZStudy of the fresh and hardened properties of fiber self-compacting concrete2476-39772538-261610.22065/jsce.2018.102143.1366https://doaj.org/article/143bd46ae74848958df6966c16c15b562019-12-01T00:00:00Zhttps://www.jsce.ir/article_65309_51b16fb6ec94af0985f64f6dd17d8442.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Self-compacting concrete (SCC). was developed about four decades before since that time it has been used very scarcely due to a number of problems including : separation, lack of flowability and filling ability, high cracking potential, and thereupon low compressive and tensile strength. In this study, properties of SCC containing viscosity modifying agent, steel and polypropylene fibers were investigated. polypropylene fibers with dosages of 0.1, 0.125, 0.20, 0.150, 0.185, 0.205, and hook end steel fibers with volume fractions of 0.5, 1, 1.5, 0.2 and 2.5 were employed; fresh and hardened SCC were examined. The results of the fresh concrete tests revealed that rise of the both fiber types reduces the slump flow and raises the T50 time. In the V-funnel test, the time shortened with polypropylene fibers up to dosage of 1.25%, and then soars. Growing steel fibers elongate the time of the V-funnel test. Adding both types of the fibers reduces the passing ability of concrete in the L box test. Hardened concrete tests indicated that the compressive strength is falling by rising the dosage of steel fibers. The compressive strength at the age of 7 and 28 days improves up to the polypropylene fiber dosage of 1.50% and then declines. At the age of 90 days, strength trend changes in dosage of 0.1. Tensile strength grows as the both fibers increase. The crack test results show that the length and width of the cracks lower with the growth of the fibers. Adding steel fibers boosts the number of cracks.sasan motaghedmehdi ghobadimahbobeh mirzaie AliabadiYadollah GharayebiIranian Society of Structrual Engineering (ISSE)articlevmapolypropylene fibershook end steel fiberscrackingslabBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 6, Iss شماره ویژه 4, Pp 43-61 (2019)
institution	DOAJ
collection	DOAJ
language	FA
topic	vma polypropylene fibers hook end steel fibers cracking slab Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	vma polypropylene fibers hook end steel fibers cracking slab Bridge engineering TG1-470 Building construction TH1-9745 sasan motaghed mehdi ghobadi mahbobeh mirzaie Aliabadi Yadollah Gharayebi Study of the fresh and hardened properties of fiber self-compacting concrete
description	Self-compacting concrete (SCC). was developed about four decades before since that time it has been used very scarcely due to a number of problems including : separation, lack of flowability and filling ability, high cracking potential, and thereupon low compressive and tensile strength. In this study, properties of SCC containing viscosity modifying agent, steel and polypropylene fibers were investigated. polypropylene fibers with dosages of 0.1, 0.125, 0.20, 0.150, 0.185, 0.205, and hook end steel fibers with volume fractions of 0.5, 1, 1.5, 0.2 and 2.5 were employed; fresh and hardened SCC were examined. The results of the fresh concrete tests revealed that rise of the both fiber types reduces the slump flow and raises the T50 time. In the V-funnel test, the time shortened with polypropylene fibers up to dosage of 1.25%, and then soars. Growing steel fibers elongate the time of the V-funnel test. Adding both types of the fibers reduces the passing ability of concrete in the L box test. Hardened concrete tests indicated that the compressive strength is falling by rising the dosage of steel fibers. The compressive strength at the age of 7 and 28 days improves up to the polypropylene fiber dosage of 1.50% and then declines. At the age of 90 days, strength trend changes in dosage of 0.1. Tensile strength grows as the both fibers increase. The crack test results show that the length and width of the cracks lower with the growth of the fibers. Adding steel fibers boosts the number of cracks.
format	article
author	sasan motaghed mehdi ghobadi mahbobeh mirzaie Aliabadi Yadollah Gharayebi
author_facet	sasan motaghed mehdi ghobadi mahbobeh mirzaie Aliabadi Yadollah Gharayebi
author_sort	sasan motaghed
title	Study of the fresh and hardened properties of fiber self-compacting concrete
title_short	Study of the fresh and hardened properties of fiber self-compacting concrete
title_full	Study of the fresh and hardened properties of fiber self-compacting concrete
title_fullStr	Study of the fresh and hardened properties of fiber self-compacting concrete
title_full_unstemmed	Study of the fresh and hardened properties of fiber self-compacting concrete
title_sort	study of the fresh and hardened properties of fiber self-compacting concrete
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2019
url	https://doaj.org/article/143bd46ae74848958df6966c16c15b56
work_keys_str_mv	AT sasanmotaghed studyofthefreshandhardenedpropertiesoffiberselfcompactingconcrete AT mehdighobadi studyofthefreshandhardenedpropertiesoffiberselfcompactingconcrete AT mahbobehmirzaiealiabadi studyofthefreshandhardenedpropertiesoffiberselfcompactingconcrete AT yadollahgharayebi studyofthefreshandhardenedpropertiesoffiberselfcompactingconcrete
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Study of the fresh and hardened properties of fiber self-compacting concrete

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