Effect of PVA fiber on mechanical properties of fly ash-based geopolymer concrete

The effects of polyvinyl alcohol (PVA) fiber content on mechanical and fracture properties of geopolymer concrete (GPC) were investigated in the present study. Mechanical properties include cubic compressive, prism compressive, tensile and flexural strengths, and elastic modulus. The evaluation indi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Zhang Peng, Han Xu, Zheng Yuanxun, Wan Jinyi, Hui David
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	geopolymer concrete pva fiber mechanical properties fracture performance Technology T Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/e4a1bef48d754a1aa2a3c9297201e369
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e4a1bef48d754a1aa2a3c9297201e369
record_format	dspace
spelling	oai:doaj.org-article:e4a1bef48d754a1aa2a3c9297201e3692021-12-05T14:11:03ZEffect of PVA fiber on mechanical properties of fly ash-based geopolymer concrete1605-812710.1515/rams-2021-0039https://doaj.org/article/e4a1bef48d754a1aa2a3c9297201e3692021-07-01T00:00:00Zhttps://doi.org/10.1515/rams-2021-0039https://doaj.org/toc/1605-8127The effects of polyvinyl alcohol (PVA) fiber content on mechanical and fracture properties of geopolymer concrete (GPC) were investigated in the present study. Mechanical properties include cubic compressive, prism compressive, tensile and flexural strengths, and elastic modulus. The evaluation indices in fracture properties were measured by using the three-point bending test. Geopolymer was prepared by fly ash, metakaolin, and alkali activator, which was obtained by mixing sodium hydroxide and sodium silicate solutions. The volume fractions of PVA fiber (length 12 mm and diameter 40 μm) were 0, 0.2, 0.4, 0.6, 0.8, and 1.0%. The results indicate that the effects of the PVA fiber on the cubic and prism compressive strengths and elastic modulus are similar. A tendency of first increasing and then decreasing with the increase in the PVA fiber content was observed in these properties. They all reached a maximum at 0.2% PVA fiber content. There was also a similar tendency of first increase and then decrease for tensile and flexural strengths, peak load, critical effective crack lengths, fracture toughness, and fracture energy of GPC, which were significantly improved by the PVA fiber. They reached a maximum at 0.8% PVA fiber content, except the tensile strength whose maximum was at 1.0% PVA fiber volume fraction. Considering the parameters analyzed, it seems that the 0.8% PVA fiber content provides optimal reinforcement of the mechanical properties of GPC.Zhang PengHan XuZheng YuanxunWan JinyiHui DavidDe Gruyterarticlegeopolymer concretepva fibermechanical propertiesfracture performanceTechnologyTChemical technologyTP1-1185ENReviews on Advanced Materials Science, Vol 60, Iss 1, Pp 418-437 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	geopolymer concrete pva fiber mechanical properties fracture performance Technology T Chemical technology TP1-1185
spellingShingle	geopolymer concrete pva fiber mechanical properties fracture performance Technology T Chemical technology TP1-1185 Zhang Peng Han Xu Zheng Yuanxun Wan Jinyi Hui David Effect of PVA fiber on mechanical properties of fly ash-based geopolymer concrete
description	The effects of polyvinyl alcohol (PVA) fiber content on mechanical and fracture properties of geopolymer concrete (GPC) were investigated in the present study. Mechanical properties include cubic compressive, prism compressive, tensile and flexural strengths, and elastic modulus. The evaluation indices in fracture properties were measured by using the three-point bending test. Geopolymer was prepared by fly ash, metakaolin, and alkali activator, which was obtained by mixing sodium hydroxide and sodium silicate solutions. The volume fractions of PVA fiber (length 12 mm and diameter 40 μm) were 0, 0.2, 0.4, 0.6, 0.8, and 1.0%. The results indicate that the effects of the PVA fiber on the cubic and prism compressive strengths and elastic modulus are similar. A tendency of first increasing and then decreasing with the increase in the PVA fiber content was observed in these properties. They all reached a maximum at 0.2% PVA fiber content. There was also a similar tendency of first increase and then decrease for tensile and flexural strengths, peak load, critical effective crack lengths, fracture toughness, and fracture energy of GPC, which were significantly improved by the PVA fiber. They reached a maximum at 0.8% PVA fiber content, except the tensile strength whose maximum was at 1.0% PVA fiber volume fraction. Considering the parameters analyzed, it seems that the 0.8% PVA fiber content provides optimal reinforcement of the mechanical properties of GPC.
format	article
author	Zhang Peng Han Xu Zheng Yuanxun Wan Jinyi Hui David
author_facet	Zhang Peng Han Xu Zheng Yuanxun Wan Jinyi Hui David
author_sort	Zhang Peng
title	Effect of PVA fiber on mechanical properties of fly ash-based geopolymer concrete
title_short	Effect of PVA fiber on mechanical properties of fly ash-based geopolymer concrete
title_full	Effect of PVA fiber on mechanical properties of fly ash-based geopolymer concrete
title_fullStr	Effect of PVA fiber on mechanical properties of fly ash-based geopolymer concrete
title_full_unstemmed	Effect of PVA fiber on mechanical properties of fly ash-based geopolymer concrete
title_sort	effect of pva fiber on mechanical properties of fly ash-based geopolymer concrete
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/e4a1bef48d754a1aa2a3c9297201e369
work_keys_str_mv	AT zhangpeng effectofpvafiberonmechanicalpropertiesofflyashbasedgeopolymerconcrete AT hanxu effectofpvafiberonmechanicalpropertiesofflyashbasedgeopolymerconcrete AT zhengyuanxun effectofpvafiberonmechanicalpropertiesofflyashbasedgeopolymerconcrete AT wanjinyi effectofpvafiberonmechanicalpropertiesofflyashbasedgeopolymerconcrete AT huidavid effectofpvafiberonmechanicalpropertiesofflyashbasedgeopolymerconcrete
_version_	1718371450218348544

Effect of PVA fiber on mechanical properties of fly ash-based geopolymer concrete

Ejemplares similares