A new expansion material used for roof-contacted filling based on smelting slag

Abstract The improper handling of smelting slag will seriously pollute the environment, and the unfilled roof of the goaf of the mine will threaten the safety of the mine. Expansion materials have attracted more and more attention because of their excellent properties. In this paper, copper-nickel s...

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Autores principales:	Hua Na, Guocheng Lv, Lijuan Wang, Libing Liao, Dan Zhang, Lijie Guo, Wenchen Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dc846396e7764514bc1ac327a69a9581
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spelling	oai:doaj.org-article:dc846396e7764514bc1ac327a69a95812021-12-02T13:24:17ZA new expansion material used for roof-contacted filling based on smelting slag10.1038/s41598-021-81891-42045-2322https://doaj.org/article/dc846396e7764514bc1ac327a69a95812021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81891-4https://doaj.org/toc/2045-2322Abstract The improper handling of smelting slag will seriously pollute the environment, and the unfilled roof of the goaf of the mine will threaten the safety of the mine. Expansion materials have attracted more and more attention because of their excellent properties. In this paper, copper-nickel smelting slag that has some active ingredients of gelling is used instead of traditional aggregate and some part of cement in order to reduce its pollution to the environment and its costs. For safety reasons, hydrogen peroxide was chosen as the foaming agent. Sodium silicate and hexadecyl trimethyl ammonium bromide (CTAB) are used as additives. Our results showed that after 28 days of curing, the material has better mechanical properties and the early compressive strength of the material was enhanced by sodium silicate. The efficiency of foaming was improved by CTAB. It also proves that copper–nickel smelting slag can be used in expansion material. At the same time, the utilization rate of the copper–nickel smelting slag of this formula can reach 70%, reduce its pollution to the environment.Hua NaGuocheng LvLijuan WangLibing LiaoDan ZhangLijie GuoWenchen LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hua Na Guocheng Lv Lijuan Wang Libing Liao Dan Zhang Lijie Guo Wenchen Li A new expansion material used for roof-contacted filling based on smelting slag
description	Abstract The improper handling of smelting slag will seriously pollute the environment, and the unfilled roof of the goaf of the mine will threaten the safety of the mine. Expansion materials have attracted more and more attention because of their excellent properties. In this paper, copper-nickel smelting slag that has some active ingredients of gelling is used instead of traditional aggregate and some part of cement in order to reduce its pollution to the environment and its costs. For safety reasons, hydrogen peroxide was chosen as the foaming agent. Sodium silicate and hexadecyl trimethyl ammonium bromide (CTAB) are used as additives. Our results showed that after 28 days of curing, the material has better mechanical properties and the early compressive strength of the material was enhanced by sodium silicate. The efficiency of foaming was improved by CTAB. It also proves that copper–nickel smelting slag can be used in expansion material. At the same time, the utilization rate of the copper–nickel smelting slag of this formula can reach 70%, reduce its pollution to the environment.
format	article
author	Hua Na Guocheng Lv Lijuan Wang Libing Liao Dan Zhang Lijie Guo Wenchen Li
author_facet	Hua Na Guocheng Lv Lijuan Wang Libing Liao Dan Zhang Lijie Guo Wenchen Li
author_sort	Hua Na
title	A new expansion material used for roof-contacted filling based on smelting slag
title_short	A new expansion material used for roof-contacted filling based on smelting slag
title_full	A new expansion material used for roof-contacted filling based on smelting slag
title_fullStr	A new expansion material used for roof-contacted filling based on smelting slag
title_full_unstemmed	A new expansion material used for roof-contacted filling based on smelting slag
title_sort	new expansion material used for roof-contacted filling based on smelting slag
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/dc846396e7764514bc1ac327a69a9581
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A new expansion material used for roof-contacted filling based on smelting slag

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