Effect of Different NaOH Solution Concentrations on Mechanical Properties and Microstructure of Alkali-Activated Blast Furnace Ferronickel Slag

Blast furnace ferronickel slag (BFFS) is a kind of industrial solid waste that has not been effectively utilized in construction industry. The effects of different NaOH concentrations on the mechanical properties and microstructure of alkali-activated blast furnace ferronickel slag were investigated...

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Autores principales:	Zongxian Huang, Yuqi Zhou, Yong Cui
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	blast furnace ferronickel slag alkali-activated material compressive strength dosage of activator Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/78b7bcc94a9b4a93b4cd8147f1d11bab
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spelling	oai:doaj.org-article:78b7bcc94a9b4a93b4cd8147f1d11bab2021-11-25T17:17:55ZEffect of Different NaOH Solution Concentrations on Mechanical Properties and Microstructure of Alkali-Activated Blast Furnace Ferronickel Slag10.3390/cryst111113012073-4352https://doaj.org/article/78b7bcc94a9b4a93b4cd8147f1d11bab2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1301https://doaj.org/toc/2073-4352Blast furnace ferronickel slag (BFFS) is a kind of industrial solid waste that has not been effectively utilized in construction industry. The effects of different NaOH concentrations on the mechanical properties and microstructure of alkali-activated blast furnace ferronickel slag were investigated in this study. The results show that an optimal concentration for compressive strength is found, both higher and lower concentrations cause strength degradation. The pore structure, phase composition and hydration heat revealed that less C-A-S-H gel is produced at low concentration and result in the low compressive strength The phase composition and hydration heat revealed that more hydrotalcite is produced than C-A-S-H at high concentration due to more violent reaction at the early age hinders the growth of C-A-S-H in the later stage. FT-IR also shows that high concentration decreased the Al/Si ratio and polymerization of C-A-S-H which also leads to the low strength at high concentration.Zongxian HuangYuqi ZhouYong CuiMDPI AGarticleblast furnace ferronickel slagalkali-activated materialcompressive strengthdosage of activatorCrystallographyQD901-999ENCrystals, Vol 11, Iss 1301, p 1301 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	blast furnace ferronickel slag alkali-activated material compressive strength dosage of activator Crystallography QD901-999
spellingShingle	blast furnace ferronickel slag alkali-activated material compressive strength dosage of activator Crystallography QD901-999 Zongxian Huang Yuqi Zhou Yong Cui Effect of Different NaOH Solution Concentrations on Mechanical Properties and Microstructure of Alkali-Activated Blast Furnace Ferronickel Slag
description	Blast furnace ferronickel slag (BFFS) is a kind of industrial solid waste that has not been effectively utilized in construction industry. The effects of different NaOH concentrations on the mechanical properties and microstructure of alkali-activated blast furnace ferronickel slag were investigated in this study. The results show that an optimal concentration for compressive strength is found, both higher and lower concentrations cause strength degradation. The pore structure, phase composition and hydration heat revealed that less C-A-S-H gel is produced at low concentration and result in the low compressive strength The phase composition and hydration heat revealed that more hydrotalcite is produced than C-A-S-H at high concentration due to more violent reaction at the early age hinders the growth of C-A-S-H in the later stage. FT-IR also shows that high concentration decreased the Al/Si ratio and polymerization of C-A-S-H which also leads to the low strength at high concentration.
format	article
author	Zongxian Huang Yuqi Zhou Yong Cui
author_facet	Zongxian Huang Yuqi Zhou Yong Cui
author_sort	Zongxian Huang
title	Effect of Different NaOH Solution Concentrations on Mechanical Properties and Microstructure of Alkali-Activated Blast Furnace Ferronickel Slag
title_short	Effect of Different NaOH Solution Concentrations on Mechanical Properties and Microstructure of Alkali-Activated Blast Furnace Ferronickel Slag
title_full	Effect of Different NaOH Solution Concentrations on Mechanical Properties and Microstructure of Alkali-Activated Blast Furnace Ferronickel Slag
title_fullStr	Effect of Different NaOH Solution Concentrations on Mechanical Properties and Microstructure of Alkali-Activated Blast Furnace Ferronickel Slag
title_full_unstemmed	Effect of Different NaOH Solution Concentrations on Mechanical Properties and Microstructure of Alkali-Activated Blast Furnace Ferronickel Slag
title_sort	effect of different naoh solution concentrations on mechanical properties and microstructure of alkali-activated blast furnace ferronickel slag
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/78b7bcc94a9b4a93b4cd8147f1d11bab
work_keys_str_mv	AT zongxianhuang effectofdifferentnaohsolutionconcentrationsonmechanicalpropertiesandmicrostructureofalkaliactivatedblastfurnaceferronickelslag AT yuqizhou effectofdifferentnaohsolutionconcentrationsonmechanicalpropertiesandmicrostructureofalkaliactivatedblastfurnaceferronickelslag AT yongcui effectofdifferentnaohsolutionconcentrationsonmechanicalpropertiesandmicrostructureofalkaliactivatedblastfurnaceferronickelslag
_version_	1718412539056881664

Effect of Different NaOH Solution Concentrations on Mechanical Properties and Microstructure of Alkali-Activated Blast Furnace Ferronickel Slag

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