Effect of Electrolytic Manganese Residue in Fly Ash-Based Cementitious Material: Hydration Behavior and Microstructure

Electrolytic manganese residue (EMR) is a solid waste with a main mineralogical composition of gypsum. It is generated in the production of metal manganese by the electrolysis process. In this research, EMR, fly ash, and clinker were blended to make fly ash-based cementitious material (FAC) to inves...

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Autores principales:	Yaguang Wang, Na Zhang, Yongyu Ren, Yingtang Xu, Xiaoming Liu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	electrolytic manganese residue fly ash-based cementitious material hydration behavior pore structure polymerization degree Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/58a48d63c97d465097f4bd9667a0e208
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spelling	oai:doaj.org-article:58a48d63c97d465097f4bd9667a0e2082021-11-25T18:15:57ZEffect of Electrolytic Manganese Residue in Fly Ash-Based Cementitious Material: Hydration Behavior and Microstructure10.3390/ma142270471996-1944https://doaj.org/article/58a48d63c97d465097f4bd9667a0e2082021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/7047https://doaj.org/toc/1996-1944Electrolytic manganese residue (EMR) is a solid waste with a main mineralogical composition of gypsum. It is generated in the production of metal manganese by the electrolysis process. In this research, EMR, fly ash, and clinker were blended to make fly ash-based cementitious material (FAC) to investigate the effect of EMR on strength properties, hydration behavior, microstructure, and environmental performance of FAC. XRD, TG, and SEM studied the hydration behavior of FAC. The pore structure and [SiO<sub>4</sub>] polymerization degree were characterized by MIP and <sup>29</sup>Si NMR, respectively. The experimental results indicate that FAC shows excellent mechanical properties when the EMR dosage is 10%. Moderate content of sulfate provided by EMR can promote hydration reaction of FAC, and it shows a denser pore structure and higher [SiO<sub>4</sub>] polymerization degree in this case. Heavy metal ions derived from EMR can be adsorbed in the hydration products of FAC to obtain better environmental properties. This paper presents an AFt covering model for the case of excessive EMR in FAC, and it importantly provides theoretical support for the recycling of EMR in cementitious materials.Yaguang WangNa ZhangYongyu RenYingtang XuXiaoming LiuMDPI AGarticleelectrolytic manganese residuefly ash-based cementitious materialhydration behaviorpore structurepolymerization degreeTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 7047, p 7047 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	electrolytic manganese residue fly ash-based cementitious material hydration behavior pore structure polymerization degree Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	electrolytic manganese residue fly ash-based cementitious material hydration behavior pore structure polymerization degree Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Yaguang Wang Na Zhang Yongyu Ren Yingtang Xu Xiaoming Liu Effect of Electrolytic Manganese Residue in Fly Ash-Based Cementitious Material: Hydration Behavior and Microstructure
description	Electrolytic manganese residue (EMR) is a solid waste with a main mineralogical composition of gypsum. It is generated in the production of metal manganese by the electrolysis process. In this research, EMR, fly ash, and clinker were blended to make fly ash-based cementitious material (FAC) to investigate the effect of EMR on strength properties, hydration behavior, microstructure, and environmental performance of FAC. XRD, TG, and SEM studied the hydration behavior of FAC. The pore structure and [SiO<sub>4</sub>] polymerization degree were characterized by MIP and <sup>29</sup>Si NMR, respectively. The experimental results indicate that FAC shows excellent mechanical properties when the EMR dosage is 10%. Moderate content of sulfate provided by EMR can promote hydration reaction of FAC, and it shows a denser pore structure and higher [SiO<sub>4</sub>] polymerization degree in this case. Heavy metal ions derived from EMR can be adsorbed in the hydration products of FAC to obtain better environmental properties. This paper presents an AFt covering model for the case of excessive EMR in FAC, and it importantly provides theoretical support for the recycling of EMR in cementitious materials.
format	article
author	Yaguang Wang Na Zhang Yongyu Ren Yingtang Xu Xiaoming Liu
author_facet	Yaguang Wang Na Zhang Yongyu Ren Yingtang Xu Xiaoming Liu
author_sort	Yaguang Wang
title	Effect of Electrolytic Manganese Residue in Fly Ash-Based Cementitious Material: Hydration Behavior and Microstructure
title_short	Effect of Electrolytic Manganese Residue in Fly Ash-Based Cementitious Material: Hydration Behavior and Microstructure
title_full	Effect of Electrolytic Manganese Residue in Fly Ash-Based Cementitious Material: Hydration Behavior and Microstructure
title_fullStr	Effect of Electrolytic Manganese Residue in Fly Ash-Based Cementitious Material: Hydration Behavior and Microstructure
title_full_unstemmed	Effect of Electrolytic Manganese Residue in Fly Ash-Based Cementitious Material: Hydration Behavior and Microstructure
title_sort	effect of electrolytic manganese residue in fly ash-based cementitious material: hydration behavior and microstructure
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/58a48d63c97d465097f4bd9667a0e208
work_keys_str_mv	AT yaguangwang effectofelectrolyticmanganeseresidueinflyashbasedcementitiousmaterialhydrationbehaviorandmicrostructure AT nazhang effectofelectrolyticmanganeseresidueinflyashbasedcementitiousmaterialhydrationbehaviorandmicrostructure AT yongyuren effectofelectrolyticmanganeseresidueinflyashbasedcementitiousmaterialhydrationbehaviorandmicrostructure AT yingtangxu effectofelectrolyticmanganeseresidueinflyashbasedcementitiousmaterialhydrationbehaviorandmicrostructure AT xiaomingliu effectofelectrolyticmanganeseresidueinflyashbasedcementitiousmaterialhydrationbehaviorandmicrostructure
_version_	1718411381491892224

Effect of Electrolytic Manganese Residue in Fly Ash-Based Cementitious Material: Hydration Behavior and Microstructure

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