Investigations of geopolymeric mixtures based on phosphate washing waste

Detalhes bibliográficos
Autor(a) principal: Dabbebi, R.
Data de Publicação: 2018
Outros Autores: Baklouti, S., Aguiar, J. L. Barroso de, Pacheco-Torgal, F., Samet, B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/58931
Resumo: The extraction of the phosphate ore produces a high amount of waste causing serious environmental problems. This waste, termed as phosphate washing waste, was filtered and dried at 105 °C for 24 h to remove the water. The dried waste was milled and then sieved in a 100 ?m sieve. The resulting phosphates washing waste (PWW) particles size are below 70 ?m. The phosphate washing waste was calcined at 700 °C and 900 °C. Both calcined and uncalcined waste were investigated with X-ray fluorescence (XRF), X-ray powder diffraction (DRX), Fourier transform infrared (FTIR), simultaneous differential thermal and thermogravimetric analyses (DTA-TG) and particle size analysis. This waste was activated with sodium hydroxide (NaOH) and sodium silicate in order to produce geopolymeric materials. The influence of replacing PWW by 15% of metakaolin was also study. The results show that the highest compressive strength is obtained with metakaolin. The results also showed that compressive strength decreased with the increase of NaOH concentration.
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spelling Investigations of geopolymeric mixtures based on phosphate washing wasteGeopolymerPhosphate washing wasteSodium hydroxideSodium silicateEngenharia e Tecnologia::Engenharia CivilThe extraction of the phosphate ore produces a high amount of waste causing serious environmental problems. This waste, termed as phosphate washing waste, was filtered and dried at 105 °C for 24 h to remove the water. The dried waste was milled and then sieved in a 100 ?m sieve. The resulting phosphates washing waste (PWW) particles size are below 70 ?m. The phosphate washing waste was calcined at 700 °C and 900 °C. Both calcined and uncalcined waste were investigated with X-ray fluorescence (XRF), X-ray powder diffraction (DRX), Fourier transform infrared (FTIR), simultaneous differential thermal and thermogravimetric analyses (DTA-TG) and particle size analysis. This waste was activated with sodium hydroxide (NaOH) and sodium silicate in order to produce geopolymeric materials. The influence of replacing PWW by 15% of metakaolin was also study. The results show that the highest compressive strength is obtained with metakaolin. The results also showed that compressive strength decreased with the increase of NaOH concentration.Gafsa Phosphate Company “CPG Tunisia” for providing us the phosphate washing waste sample and the Portuguese Foundation for Science and Technology (FCT) for the finance of the project UID/ECI/04047/2013info:eu-repo/semantics/publishedVersionElsevierUniversidade do MinhoDabbebi, R.Baklouti, S.Aguiar, J. L. Barroso dePacheco-Torgal, F.Samet, B.2018-122018-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/58931engDabbebi R., s. Baklouti, Aguiar J. B., Pacheco-Torgal F., Samet B. Investigations of geopolymeric mixtures based on phosphate washing waste, Science and Technology of Materials, Vol. 30, pp. 1-5, doi:10.1016/j.stmat.2018.08.001, 20182603-636310.1016/j.stmat.2018.08.001https://www.sciencedirect.com/science/article/pii/S2603636318300526info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:10:31Zoai:repositorium.sdum.uminho.pt:1822/58931Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:02:10.721231Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Investigations of geopolymeric mixtures based on phosphate washing waste
title Investigations of geopolymeric mixtures based on phosphate washing waste
spellingShingle Investigations of geopolymeric mixtures based on phosphate washing waste
Dabbebi, R.
Geopolymer
Phosphate washing waste
Sodium hydroxide
Sodium silicate
Engenharia e Tecnologia::Engenharia Civil
title_short Investigations of geopolymeric mixtures based on phosphate washing waste
title_full Investigations of geopolymeric mixtures based on phosphate washing waste
title_fullStr Investigations of geopolymeric mixtures based on phosphate washing waste
title_full_unstemmed Investigations of geopolymeric mixtures based on phosphate washing waste
title_sort Investigations of geopolymeric mixtures based on phosphate washing waste
author Dabbebi, R.
author_facet Dabbebi, R.
Baklouti, S.
Aguiar, J. L. Barroso de
Pacheco-Torgal, F.
Samet, B.
author_role author
author2 Baklouti, S.
Aguiar, J. L. Barroso de
Pacheco-Torgal, F.
Samet, B.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Dabbebi, R.
Baklouti, S.
Aguiar, J. L. Barroso de
Pacheco-Torgal, F.
Samet, B.
dc.subject.por.fl_str_mv Geopolymer
Phosphate washing waste
Sodium hydroxide
Sodium silicate
Engenharia e Tecnologia::Engenharia Civil
topic Geopolymer
Phosphate washing waste
Sodium hydroxide
Sodium silicate
Engenharia e Tecnologia::Engenharia Civil
description The extraction of the phosphate ore produces a high amount of waste causing serious environmental problems. This waste, termed as phosphate washing waste, was filtered and dried at 105 °C for 24 h to remove the water. The dried waste was milled and then sieved in a 100 ?m sieve. The resulting phosphates washing waste (PWW) particles size are below 70 ?m. The phosphate washing waste was calcined at 700 °C and 900 °C. Both calcined and uncalcined waste were investigated with X-ray fluorescence (XRF), X-ray powder diffraction (DRX), Fourier transform infrared (FTIR), simultaneous differential thermal and thermogravimetric analyses (DTA-TG) and particle size analysis. This waste was activated with sodium hydroxide (NaOH) and sodium silicate in order to produce geopolymeric materials. The influence of replacing PWW by 15% of metakaolin was also study. The results show that the highest compressive strength is obtained with metakaolin. The results also showed that compressive strength decreased with the increase of NaOH concentration.
publishDate 2018
dc.date.none.fl_str_mv 2018-12
2018-12-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/58931
url http://hdl.handle.net/1822/58931
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Dabbebi R., s. Baklouti, Aguiar J. B., Pacheco-Torgal F., Samet B. Investigations of geopolymeric mixtures based on phosphate washing waste, Science and Technology of Materials, Vol. 30, pp. 1-5, doi:10.1016/j.stmat.2018.08.001, 2018
2603-6363
10.1016/j.stmat.2018.08.001
https://www.sciencedirect.com/science/article/pii/S2603636318300526
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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