Spectroscopic and microscopic study of alkali activated mortars based on Tunisian phosphate washing waste
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , |
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. |
id |
RCAP_dfac3f0f34f507e4dc9d194988b6f6d2 |
---|---|
oai_identifier_str |
oai:repositorium.sdum.uminho.pt:1822/63480 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
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 |
|
_version_ |
1799132560957112320 |