Influence of CaO Content on the Fly Ash–Lime System Hydrothermal Synthesis Reaction Under Autoclave Curing

As a substitute for traditional Portland cement, the development and research of “low-temperature-synthesized fly ash cement” has been receiving extensive attention. This study explores the effects of calcium oxide content on the fly ash–lime system hydrothermal synthesis reaction under autoclave cu...

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Autores principales:	Chenhui Zhu, Yilong Lou, Xuemei Shen, Hesi Xu, Jie Yang
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	CaO content low-temperature-synthesized fly ash cement autoclave curing micro-composition morphology Physics QC1-999
Acceso en línea:	https://doaj.org/article/96eaa03fcf6443a6911f0da3568a1dff
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id	oai:doaj.org-article:96eaa03fcf6443a6911f0da3568a1dff
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spelling	oai:doaj.org-article:96eaa03fcf6443a6911f0da3568a1dff2021-11-12T16:41:15ZInfluence of CaO Content on the Fly Ash–Lime System Hydrothermal Synthesis Reaction Under Autoclave Curing2296-424X10.3389/fphy.2021.782309https://doaj.org/article/96eaa03fcf6443a6911f0da3568a1dff2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fphy.2021.782309/fullhttps://doaj.org/toc/2296-424XAs a substitute for traditional Portland cement, the development and research of “low-temperature-synthesized fly ash cement” has been receiving extensive attention. This study explores the effects of calcium oxide content on the fly ash–lime system hydrothermal synthesis reaction under autoclave curing, focusing on the effects of CaO content on the strength of the cement paste. The changes in phase composition, microstructure, and morphology were characterized using X-ray diffraction and scanning electron microscopy (SEM) analysis. The results show that with an increase in the CaO content, the amounts of β-C2S and C12A7 in the gelling material also increase. However, when the CaO content is very high, the amounts of β-C2S and C12A7 in the gelling material no longer increase, and the strength is lost.Chenhui ZhuYilong LouXuemei ShenHesi XuJie YangFrontiers Media S.A.articleCaO contentlow-temperature-synthesized fly ash cementautoclave curingmicro-compositionmorphologyPhysicsQC1-999ENFrontiers in Physics, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	CaO content low-temperature-synthesized fly ash cement autoclave curing micro-composition morphology Physics QC1-999
spellingShingle	CaO content low-temperature-synthesized fly ash cement autoclave curing micro-composition morphology Physics QC1-999 Chenhui Zhu Yilong Lou Xuemei Shen Hesi Xu Jie Yang Influence of CaO Content on the Fly Ash–Lime System Hydrothermal Synthesis Reaction Under Autoclave Curing
description	As a substitute for traditional Portland cement, the development and research of “low-temperature-synthesized fly ash cement” has been receiving extensive attention. This study explores the effects of calcium oxide content on the fly ash–lime system hydrothermal synthesis reaction under autoclave curing, focusing on the effects of CaO content on the strength of the cement paste. The changes in phase composition, microstructure, and morphology were characterized using X-ray diffraction and scanning electron microscopy (SEM) analysis. The results show that with an increase in the CaO content, the amounts of β-C2S and C12A7 in the gelling material also increase. However, when the CaO content is very high, the amounts of β-C2S and C12A7 in the gelling material no longer increase, and the strength is lost.
format	article
author	Chenhui Zhu Yilong Lou Xuemei Shen Hesi Xu Jie Yang
author_facet	Chenhui Zhu Yilong Lou Xuemei Shen Hesi Xu Jie Yang
author_sort	Chenhui Zhu
title	Influence of CaO Content on the Fly Ash–Lime System Hydrothermal Synthesis Reaction Under Autoclave Curing
title_short	Influence of CaO Content on the Fly Ash–Lime System Hydrothermal Synthesis Reaction Under Autoclave Curing
title_full	Influence of CaO Content on the Fly Ash–Lime System Hydrothermal Synthesis Reaction Under Autoclave Curing
title_fullStr	Influence of CaO Content on the Fly Ash–Lime System Hydrothermal Synthesis Reaction Under Autoclave Curing
title_full_unstemmed	Influence of CaO Content on the Fly Ash–Lime System Hydrothermal Synthesis Reaction Under Autoclave Curing
title_sort	influence of cao content on the fly ash–lime system hydrothermal synthesis reaction under autoclave curing
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/96eaa03fcf6443a6911f0da3568a1dff
work_keys_str_mv	AT chenhuizhu influenceofcaocontentontheflyashlimesystemhydrothermalsynthesisreactionunderautoclavecuring AT yilonglou influenceofcaocontentontheflyashlimesystemhydrothermalsynthesisreactionunderautoclavecuring AT xuemeishen influenceofcaocontentontheflyashlimesystemhydrothermalsynthesisreactionunderautoclavecuring AT hesixu influenceofcaocontentontheflyashlimesystemhydrothermalsynthesisreactionunderautoclavecuring AT jieyang influenceofcaocontentontheflyashlimesystemhydrothermalsynthesisreactionunderautoclavecuring
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Influence of CaO Content on the Fly Ash–Lime System Hydrothermal Synthesis Reaction Under Autoclave Curing

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