Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste

Detalhes bibliográficos
Autor(a) principal: Dabbebi, R.
Data de Publicação: 2020
Outros Autores: Aguiar, J. L. Barroso de, Baklouti, S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/63480
Resumo: The calcination of phosphate washing waste has a significant effect on the microstructure and mechanical properties of the phosphate washing waste-based alkali activated mortars. This study aims to investigate the reaction products of the phosphate washing waste activated with sodium hydroxide (SH) and sodium silicate (SS) with mass ratio of the two solutions SH/SS = 1. Different techniques were used to characterize the obtained mortars including: Compressive strength, X-ray diffraction XRD, Solid state magic angle spinning nuclear magnetic resonance (MAS-NMR) of 3 nuclei (27Al, 29Si and 31P), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and Electron microscope scanning and energy dispersive spectroscopy (SEM-EDS). The obtained results reveal that the alkali activation of phosphate washing waste generate 2 types of reactions and 2 types of products (N-A-S-H)/(C,N)-A-S-H as 3D network and C?S?H/C-(A)-S-H as 2D gel. The Al and reactive Ca have a strong effect on the final mechanicalproperties.
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spelling Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing wasteAlkali activated mortarsCalcinationFTIRMAS-NMRPhosphate washing wasteEngenharia e Tecnologia::Engenharia CivilEngenharia e Tecnologia::Engenharia dos MateriaisScience & TechnologyThe calcination of phosphate washing waste has a significant effect on the microstructure and mechanical properties of the phosphate washing waste-based alkali activated mortars. This study aims to investigate the reaction products of the phosphate washing waste activated with sodium hydroxide (SH) and sodium silicate (SS) with mass ratio of the two solutions SH/SS = 1. Different techniques were used to characterize the obtained mortars including: Compressive strength, X-ray diffraction XRD, Solid state magic angle spinning nuclear magnetic resonance (MAS-NMR) of 3 nuclei (27Al, 29Si and 31P), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and Electron microscope scanning and energy dispersive spectroscopy (SEM-EDS). The obtained results reveal that the alkali activation of phosphate washing waste generate 2 types of reactions and 2 types of products (N-A-S-H)/(C,N)-A-S-H as 3D network and C?S?H/C-(A)-S-H as 2D gel. The Al and reactive Ca have a strong effect on the final mechanicalproperties.Gafsa Phosphate Company “CPG Tunisia” for providing us the phosphate washing waste sample.ElsevierUniversidade do MinhoDabbebi, R.Aguiar, J. L. Barroso deBaklouti, S.2020-012020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/63480engDabbebi, R., de Aguiar, J. B., & Baklouti, S. (2020). Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste. Cement and Concrete Composites, 105, 1034490958-946510.1016/j.cemconcomp.2019.103449https://www.sciencedirect.com/science/article/pii/S0958946519312922info: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:RCAAP2023-10-07T01:21:00Zoai:repositorium.sdum.uminho.pt:1822/63480Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:12:32.461820Repositório 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 Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste
title Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste
spellingShingle Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste
Dabbebi, R.
Alkali activated mortars
Calcination
FTIR
MAS-NMR
Phosphate washing waste
Engenharia e Tecnologia::Engenharia Civil
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
title_short Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste
title_full Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste
title_fullStr Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste
title_full_unstemmed Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste
title_sort Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste
author Dabbebi, R.
author_facet Dabbebi, R.
Aguiar, J. L. Barroso de
Baklouti, S.
author_role author
author2 Aguiar, J. L. Barroso de
Baklouti, S.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Dabbebi, R.
Aguiar, J. L. Barroso de
Baklouti, S.
dc.subject.por.fl_str_mv Alkali activated mortars
Calcination
FTIR
MAS-NMR
Phosphate washing waste
Engenharia e Tecnologia::Engenharia Civil
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
topic Alkali activated mortars
Calcination
FTIR
MAS-NMR
Phosphate washing waste
Engenharia e Tecnologia::Engenharia Civil
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
description The calcination of phosphate washing waste has a significant effect on the microstructure and mechanical properties of the phosphate washing waste-based alkali activated mortars. This study aims to investigate the reaction products of the phosphate washing waste activated with sodium hydroxide (SH) and sodium silicate (SS) with mass ratio of the two solutions SH/SS = 1. Different techniques were used to characterize the obtained mortars including: Compressive strength, X-ray diffraction XRD, Solid state magic angle spinning nuclear magnetic resonance (MAS-NMR) of 3 nuclei (27Al, 29Si and 31P), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and Electron microscope scanning and energy dispersive spectroscopy (SEM-EDS). The obtained results reveal that the alkali activation of phosphate washing waste generate 2 types of reactions and 2 types of products (N-A-S-H)/(C,N)-A-S-H as 3D network and C?S?H/C-(A)-S-H as 2D gel. The Al and reactive Ca have a strong effect on the final mechanicalproperties.
publishDate 2020
dc.date.none.fl_str_mv 2020-01
2020-01-01T00:00:00Z
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 https://hdl.handle.net/1822/63480
url https://hdl.handle.net/1822/63480
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Dabbebi, R., de Aguiar, J. B., & Baklouti, S. (2020). Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste. Cement and Concrete Composites, 105, 103449
0958-9465
10.1016/j.cemconcomp.2019.103449
https://www.sciencedirect.com/science/article/pii/S0958946519312922
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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