Ye’elimite synthesis by chemical routes and role of iron

The cement industry has been taking significant steps for years to reduce its carbon footprint by opting for alternative less polluting materials such as sulfo-aluminous cements (CSA). These binders, compared to ordinary Portland cements (OPC), have two advantages: reduction of the CO2 emissions and...

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Autores principales:	Abir Fatima-Zahra, Mesnaoui Mohamed, Abouliatim Younes, Nibou Lhbib, El Hafiane Youssef, Smith Agnès
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/b7a8c03cc8c1458191180b164dc10c47
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id	oai:doaj.org-article:b7a8c03cc8c1458191180b164dc10c47
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spelling	oai:doaj.org-article:b7a8c03cc8c1458191180b164dc10c472021-12-02T17:13:38ZYe’elimite synthesis by chemical routes and role of iron2261-236X10.1051/matecconf/202134801009https://doaj.org/article/b7a8c03cc8c1458191180b164dc10c472021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/17/matecconf_inbes2021_01009.pdfhttps://doaj.org/toc/2261-236XThe cement industry has been taking significant steps for years to reduce its carbon footprint by opting for alternative less polluting materials such as sulfo-aluminous cements (CSA). These binders, compared to ordinary Portland cements (OPC), have two advantages: reduction of the CO2 emissions and energy saving because the sintering temperature of CSA cements is much lower than ordinary cement (Portland). The aim of this work is to study the effect of iron oxide on the formation of the ye'elimite phase, which represents the main phase of (CSA).This study details the protocol for the chemical synthesis of ye’elimite containing increasing amounts of iron (general formula: Ca4Al(6-2x)Fe2xSO16 with x = 0.00 to 1.13). The maximum ye’elimite content is reached at a sintering temperature of 1250°C. The presence of iron promotes the formation of cubic ye'elimite at the expense of the orthorhombic phase. The total incorporation of iron in ye’elimite structure is possible when x < 0.12. Beyond this content, the ferritic phase (CaO)2(Al2O3,Fe2O3) appears as a minor phase and its quantity becomes more important with the increase of the percentage of iron introduced in the synthesis. Finally, the electron microscopy allows to observe nanometric grains assembled in larger aggregates.Abir Fatima-ZahraMesnaoui MohamedAbouliatim YounesNibou LhbibEl Hafiane YoussefSmith AgnèsEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 348, p 01009 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Abir Fatima-Zahra Mesnaoui Mohamed Abouliatim Younes Nibou Lhbib El Hafiane Youssef Smith Agnès Ye’elimite synthesis by chemical routes and role of iron
description	The cement industry has been taking significant steps for years to reduce its carbon footprint by opting for alternative less polluting materials such as sulfo-aluminous cements (CSA). These binders, compared to ordinary Portland cements (OPC), have two advantages: reduction of the CO2 emissions and energy saving because the sintering temperature of CSA cements is much lower than ordinary cement (Portland). The aim of this work is to study the effect of iron oxide on the formation of the ye'elimite phase, which represents the main phase of (CSA).This study details the protocol for the chemical synthesis of ye’elimite containing increasing amounts of iron (general formula: Ca4Al(6-2x)Fe2xSO16 with x = 0.00 to 1.13). The maximum ye’elimite content is reached at a sintering temperature of 1250°C. The presence of iron promotes the formation of cubic ye'elimite at the expense of the orthorhombic phase. The total incorporation of iron in ye’elimite structure is possible when x < 0.12. Beyond this content, the ferritic phase (CaO)2(Al2O3,Fe2O3) appears as a minor phase and its quantity becomes more important with the increase of the percentage of iron introduced in the synthesis. Finally, the electron microscopy allows to observe nanometric grains assembled in larger aggregates.
format	article
author	Abir Fatima-Zahra Mesnaoui Mohamed Abouliatim Younes Nibou Lhbib El Hafiane Youssef Smith Agnès
author_facet	Abir Fatima-Zahra Mesnaoui Mohamed Abouliatim Younes Nibou Lhbib El Hafiane Youssef Smith Agnès
author_sort	Abir Fatima-Zahra
title	Ye’elimite synthesis by chemical routes and role of iron
title_short	Ye’elimite synthesis by chemical routes and role of iron
title_full	Ye’elimite synthesis by chemical routes and role of iron
title_fullStr	Ye’elimite synthesis by chemical routes and role of iron
title_full_unstemmed	Ye’elimite synthesis by chemical routes and role of iron
title_sort	ye’elimite synthesis by chemical routes and role of iron
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/b7a8c03cc8c1458191180b164dc10c47
work_keys_str_mv	AT abirfatimazahra yeelimitesynthesisbychemicalroutesandroleofiron AT mesnaouimohamed yeelimitesynthesisbychemicalroutesandroleofiron AT abouliatimyounes yeelimitesynthesisbychemicalroutesandroleofiron AT niboulhbib yeelimitesynthesisbychemicalroutesandroleofiron AT elhafianeyoussef yeelimitesynthesisbychemicalroutesandroleofiron AT smithagnes yeelimitesynthesisbychemicalroutesandroleofiron
_version_	1718381341755572224

Ye’elimite synthesis by chemical routes and role of iron

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