Treatments of residual pine strands: characterization and wood-cement-compatibility
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/02773813.2020.1828474 http://hdl.handle.net/11449/205296 |
Resumo: | This paper aims to evaluate treatments on pine strands as well as wood-cement compatibility. The strands were prepared and then were submitted to four treatments (untreated; cold water, hot water and NaOH). Physical, chemical, thermal and mechanical properties of the strands were measured. Wood-cement composites were produced with all strand treatments. To evaluate the strand effects on the cement hydration, axial compression tests were conducted at 28-day. The phases of the matrix of the composites at 24 h 7- and 28-day were also determinate. Fourier transform infrared spectra shows that, although the treatments partially removed the hemicellulose and extractives, they also reduced the cellulose and lignin bands. Axial compression results indicated that there were no differences between values for the composites with untreated and treated strands. For the phase analyses, in the initial ages (24 h and 7-day), it was identified that portlandite for cement sample (control) is higher than those containing the strands. At 28-day, it was found that among the strands, the untreated have the lower portlandite content and the higher calcium carbonate content. Indicating the cement carbonation over time as presented in the cement sample (control). Therefore, the untreated pine residual strand showed good compatibility with cement and for this study there were no benefits on treating the strands. |
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Repositório Institucional da UNESP |
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Treatments of residual pine strands: characterization and wood-cement-compatibilitycement materialschemical treatmentcompositesstrandWoodThis paper aims to evaluate treatments on pine strands as well as wood-cement compatibility. The strands were prepared and then were submitted to four treatments (untreated; cold water, hot water and NaOH). Physical, chemical, thermal and mechanical properties of the strands were measured. Wood-cement composites were produced with all strand treatments. To evaluate the strand effects on the cement hydration, axial compression tests were conducted at 28-day. The phases of the matrix of the composites at 24 h 7- and 28-day were also determinate. Fourier transform infrared spectra shows that, although the treatments partially removed the hemicellulose and extractives, they also reduced the cellulose and lignin bands. Axial compression results indicated that there were no differences between values for the composites with untreated and treated strands. For the phase analyses, in the initial ages (24 h and 7-day), it was identified that portlandite for cement sample (control) is higher than those containing the strands. At 28-day, it was found that among the strands, the untreated have the lower portlandite content and the higher calcium carbonate content. Indicating the cement carbonation over time as presented in the cement sample (control). Therefore, the untreated pine residual strand showed good compatibility with cement and for this study there were no benefits on treating the strands.Faculty of Animal Science and Food Engineering Department of Biosystems Engineering University of São Paulo (USP)NSERC Industrial Research Chair on Ecoresponsible Wood Construction (CIRCERB) Forest and Wood Sciences Department Laval UniversitySchool of Engineering Department of Materials and Technology São Paulo State University (UNESP)School of Engineering Department of Materials and Technology São Paulo State University (UNESP)Universidade de São Paulo (USP)Laval UniversityUniversidade Estadual Paulista (Unesp)Cabral, Matheus R.Nakanishi, Erika Y.Franco, Mayara S. R.Santos, Sérgio F. [UNESP]Fiorelli, Juliano2021-06-25T10:13:02Z2021-06-25T10:13:02Z2020-10-07info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article396-407http://dx.doi.org/10.1080/02773813.2020.1828474Journal of Wood Chemistry and Technology, v. 40, n. 6, p. 396-407, 2020.1532-23190277-3813http://hdl.handle.net/11449/20529610.1080/02773813.2020.18284742-s2.0-85092466161Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Wood Chemistry and Technologyinfo:eu-repo/semantics/openAccess2021-10-23T12:31:17Zoai:repositorio.unesp.br:11449/205296Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:55:32.831786Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Treatments of residual pine strands: characterization and wood-cement-compatibility |
title |
Treatments of residual pine strands: characterization and wood-cement-compatibility |
spellingShingle |
Treatments of residual pine strands: characterization and wood-cement-compatibility Cabral, Matheus R. cement materials chemical treatment composites strand Wood |
title_short |
Treatments of residual pine strands: characterization and wood-cement-compatibility |
title_full |
Treatments of residual pine strands: characterization and wood-cement-compatibility |
title_fullStr |
Treatments of residual pine strands: characterization and wood-cement-compatibility |
title_full_unstemmed |
Treatments of residual pine strands: characterization and wood-cement-compatibility |
title_sort |
Treatments of residual pine strands: characterization and wood-cement-compatibility |
author |
Cabral, Matheus R. |
author_facet |
Cabral, Matheus R. Nakanishi, Erika Y. Franco, Mayara S. R. Santos, Sérgio F. [UNESP] Fiorelli, Juliano |
author_role |
author |
author2 |
Nakanishi, Erika Y. Franco, Mayara S. R. Santos, Sérgio F. [UNESP] Fiorelli, Juliano |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Laval University Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Cabral, Matheus R. Nakanishi, Erika Y. Franco, Mayara S. R. Santos, Sérgio F. [UNESP] Fiorelli, Juliano |
dc.subject.por.fl_str_mv |
cement materials chemical treatment composites strand Wood |
topic |
cement materials chemical treatment composites strand Wood |
description |
This paper aims to evaluate treatments on pine strands as well as wood-cement compatibility. The strands were prepared and then were submitted to four treatments (untreated; cold water, hot water and NaOH). Physical, chemical, thermal and mechanical properties of the strands were measured. Wood-cement composites were produced with all strand treatments. To evaluate the strand effects on the cement hydration, axial compression tests were conducted at 28-day. The phases of the matrix of the composites at 24 h 7- and 28-day were also determinate. Fourier transform infrared spectra shows that, although the treatments partially removed the hemicellulose and extractives, they also reduced the cellulose and lignin bands. Axial compression results indicated that there were no differences between values for the composites with untreated and treated strands. For the phase analyses, in the initial ages (24 h and 7-day), it was identified that portlandite for cement sample (control) is higher than those containing the strands. At 28-day, it was found that among the strands, the untreated have the lower portlandite content and the higher calcium carbonate content. Indicating the cement carbonation over time as presented in the cement sample (control). Therefore, the untreated pine residual strand showed good compatibility with cement and for this study there were no benefits on treating the strands. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-10-07 2021-06-25T10:13:02Z 2021-06-25T10:13:02Z |
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://dx.doi.org/10.1080/02773813.2020.1828474 Journal of Wood Chemistry and Technology, v. 40, n. 6, p. 396-407, 2020. 1532-2319 0277-3813 http://hdl.handle.net/11449/205296 10.1080/02773813.2020.1828474 2-s2.0-85092466161 |
url |
http://dx.doi.org/10.1080/02773813.2020.1828474 http://hdl.handle.net/11449/205296 |
identifier_str_mv |
Journal of Wood Chemistry and Technology, v. 40, n. 6, p. 396-407, 2020. 1532-2319 0277-3813 10.1080/02773813.2020.1828474 2-s2.0-85092466161 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Wood Chemistry and Technology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
396-407 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129373732077568 |