Comprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete

The foundry industry generates large amounts of spent foundry sands, which are stored, available for recovery in other industrial sectors but unfortunately poorly exploited. Different authors have studied the possibility of recovering them in concretes, which would also allow production of more sust...

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Autores principales:	Paola Paul, Essia Belhaj, Cécile Diliberto, Komla Lolonyo Apedo, Françoise Feugeas
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	spent chemical foundry sand recovery sustainable concrete industrial waste management Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/587a6a6980db41808ab6b9bd259efb46
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spelling	oai:doaj.org-article:587a6a6980db41808ab6b9bd259efb462021-11-25T19:05:11ZComprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete10.3390/su1322128812071-1050https://doaj.org/article/587a6a6980db41808ab6b9bd259efb462021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/22/12881https://doaj.org/toc/2071-1050The foundry industry generates large amounts of spent foundry sands, which are stored, available for recovery in other industrial sectors but unfortunately poorly exploited. Different authors have studied the possibility of recovering them in concretes, which would also allow production of more sustainable cementitious materials. The variability of their results highlights the importance of a better understanding of the potential influential parameters of the by-products. Unfortunately, exhaustive characterizations of the materials are rarely performed, especially for chemically bound foundry sands. This article presents a case study for the recovery of a spent chemical foundry sand with an exhaustive physicochemical characterization of the by-product and an analysis of its influence on the workability and mechanical strengths of cementitious materials. The tests recommended by the European standard for aggregates for concrete confirmed the suitability of the by-product. Associated with additional chemical tests (scanning electron microscopy, X-ray fluorescence, X-ray diffraction, etc.) as well as metallic particles characterization, they highlighted possible influential parameters. The workability and mechanical resistance tests carried out on mortars and concretes confirmed the influence of the fineness of the by-product associated with other parameters. Its use at a substitution rate of 30% results in a strength class C 30/37 concrete.Paola PaulEssia BelhajCécile DilibertoKomla Lolonyo ApedoFrançoise FeugeasMDPI AGarticlespent chemical foundry sandrecoverysustainable concreteindustrial waste managementEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12881, p 12881 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	spent chemical foundry sand recovery sustainable concrete industrial waste management Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	spent chemical foundry sand recovery sustainable concrete industrial waste management Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Paola Paul Essia Belhaj Cécile Diliberto Komla Lolonyo Apedo Françoise Feugeas Comprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete
description	The foundry industry generates large amounts of spent foundry sands, which are stored, available for recovery in other industrial sectors but unfortunately poorly exploited. Different authors have studied the possibility of recovering them in concretes, which would also allow production of more sustainable cementitious materials. The variability of their results highlights the importance of a better understanding of the potential influential parameters of the by-products. Unfortunately, exhaustive characterizations of the materials are rarely performed, especially for chemically bound foundry sands. This article presents a case study for the recovery of a spent chemical foundry sand with an exhaustive physicochemical characterization of the by-product and an analysis of its influence on the workability and mechanical strengths of cementitious materials. The tests recommended by the European standard for aggregates for concrete confirmed the suitability of the by-product. Associated with additional chemical tests (scanning electron microscopy, X-ray fluorescence, X-ray diffraction, etc.) as well as metallic particles characterization, they highlighted possible influential parameters. The workability and mechanical resistance tests carried out on mortars and concretes confirmed the influence of the fineness of the by-product associated with other parameters. Its use at a substitution rate of 30% results in a strength class C 30/37 concrete.
format	article
author	Paola Paul Essia Belhaj Cécile Diliberto Komla Lolonyo Apedo Françoise Feugeas
author_facet	Paola Paul Essia Belhaj Cécile Diliberto Komla Lolonyo Apedo Françoise Feugeas
author_sort	Paola Paul
title	Comprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete
title_short	Comprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete
title_full	Comprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete
title_fullStr	Comprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete
title_full_unstemmed	Comprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete
title_sort	comprehensive characterization of spent chemical foundry sand for use in concrete
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/587a6a6980db41808ab6b9bd259efb46
work_keys_str_mv	AT paolapaul comprehensivecharacterizationofspentchemicalfoundrysandforuseinconcrete AT essiabelhaj comprehensivecharacterizationofspentchemicalfoundrysandforuseinconcrete AT cecilediliberto comprehensivecharacterizationofspentchemicalfoundrysandforuseinconcrete AT komlalolonyoapedo comprehensivecharacterizationofspentchemicalfoundrysandforuseinconcrete AT francoisefeugeas comprehensivecharacterizationofspentchemicalfoundrysandforuseinconcrete
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Comprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete

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