Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/ma16114148 http://hdl.handle.net/11449/247561 |
Resumo: | A Hydroelectric Power Plant (HPP) presents erosion problems on reservoir slopes and margins. Geomats are a biotechnical composite technology increasingly used to protect soils against erosion. Survivability or durability of geomats is essential for successful application. This work analyses the degradation of geomats exposed in the field for more than six years. These geomats were used as erosion-control treatment in a slope at HPP Simplício in Brazil. The degradation of the geomats in the laboratory was also analysed through exposure in a UV ageing chamber for 500 h and 1000 h. Degradation was quantitatively evaluated by testing the tensile strength of the geomat wires and thermal tests such as thermogravimetry (TG) and differential scanning calorimetry (DSC). The results showed that the geomat wires exposed in the field had a greater decrease in resistance compared to the samples exposed in the laboratory. In the samples collected in the field, it could be observed that the degradation of the virgin sample occurred earlier than in the exposed samples, contrary to what was observed in the TG tests carried out with the samples exposed in the laboratory. The DSC analysis showed that the samples had similar behaviours for the melting peaks. This evaluation of the wires of the geomats was presented as an alternative to analysing the tensile strengths of discontinuous geosynthetic materials such as the geomats. |
id |
UNSP_21b22c40cedd66426f71e5ec921218bf |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/247561 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratoryerosion-control techniquesgeomatgeosyntheticsslopeA Hydroelectric Power Plant (HPP) presents erosion problems on reservoir slopes and margins. Geomats are a biotechnical composite technology increasingly used to protect soils against erosion. Survivability or durability of geomats is essential for successful application. This work analyses the degradation of geomats exposed in the field for more than six years. These geomats were used as erosion-control treatment in a slope at HPP Simplício in Brazil. The degradation of the geomats in the laboratory was also analysed through exposure in a UV ageing chamber for 500 h and 1000 h. Degradation was quantitatively evaluated by testing the tensile strength of the geomat wires and thermal tests such as thermogravimetry (TG) and differential scanning calorimetry (DSC). The results showed that the geomat wires exposed in the field had a greater decrease in resistance compared to the samples exposed in the laboratory. In the samples collected in the field, it could be observed that the degradation of the virgin sample occurred earlier than in the exposed samples, contrary to what was observed in the TG tests carried out with the samples exposed in the laboratory. The DSC analysis showed that the samples had similar behaviours for the melting peaks. This evaluation of the wires of the geomats was presented as an alternative to analysing the tensile strengths of discontinuous geosynthetic materials such as the geomats.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)São Carlos School of Engineering (EESC) University of São PauloGuaratinguetá Faculty of Engineering and Sciences (FEG) São Paulo State University (UNESP)Civil Engineering Department Federal University of Sao CarlosDepartment of Dam Safety and Technology Eletrobras Furnas, BR153, km 510, Zona RuralIndustrial and Systems Engineering Postgraduate Program (MEPROS) Pontifical Catholic University of Goiás-PUC GoiásGuaratinguetá Faculty of Engineering and Sciences (FEG) São Paulo State University (UNESP)CNPq: PQ 309841/2021-6CNPq: PQ 315583/2021-5Universidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)Universidade Federal de São Carlos (UFSCar)Eletrobras FurnasPontifical Catholic University of Goiás-PUC GoiásLins da Silva, JeffersonValentin, Clever AparecidoKobelnik, MarceloPedroso, Gabriel Orquizas Mattielo [UNESP]Aparício-Ardila, Maria AlejandraAraújo Júnior, Luiz Paulo Vieira deLuz, Marta Pereira da2023-07-29T13:19:26Z2023-07-29T13:19:26Z2023-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/ma16114148Materials, v. 16, n. 11, 2023.1996-1944http://hdl.handle.net/11449/24756110.3390/ma161141482-s2.0-85161524363Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterialsinfo:eu-repo/semantics/openAccess2023-07-29T13:19:26Zoai:repositorio.unesp.br:11449/247561Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:19:34.534722Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory |
title |
Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory |
spellingShingle |
Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory Lins da Silva, Jefferson erosion-control techniques geomat geosynthetics slope |
title_short |
Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory |
title_full |
Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory |
title_fullStr |
Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory |
title_full_unstemmed |
Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory |
title_sort |
Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory |
author |
Lins da Silva, Jefferson |
author_facet |
Lins da Silva, Jefferson Valentin, Clever Aparecido Kobelnik, Marcelo Pedroso, Gabriel Orquizas Mattielo [UNESP] Aparício-Ardila, Maria Alejandra Araújo Júnior, Luiz Paulo Vieira de Luz, Marta Pereira da |
author_role |
author |
author2 |
Valentin, Clever Aparecido Kobelnik, Marcelo Pedroso, Gabriel Orquizas Mattielo [UNESP] Aparício-Ardila, Maria Alejandra Araújo Júnior, Luiz Paulo Vieira de Luz, Marta Pereira da |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (UNESP) Universidade Federal de São Carlos (UFSCar) Eletrobras Furnas Pontifical Catholic University of Goiás-PUC Goiás |
dc.contributor.author.fl_str_mv |
Lins da Silva, Jefferson Valentin, Clever Aparecido Kobelnik, Marcelo Pedroso, Gabriel Orquizas Mattielo [UNESP] Aparício-Ardila, Maria Alejandra Araújo Júnior, Luiz Paulo Vieira de Luz, Marta Pereira da |
dc.subject.por.fl_str_mv |
erosion-control techniques geomat geosynthetics slope |
topic |
erosion-control techniques geomat geosynthetics slope |
description |
A Hydroelectric Power Plant (HPP) presents erosion problems on reservoir slopes and margins. Geomats are a biotechnical composite technology increasingly used to protect soils against erosion. Survivability or durability of geomats is essential for successful application. This work analyses the degradation of geomats exposed in the field for more than six years. These geomats were used as erosion-control treatment in a slope at HPP Simplício in Brazil. The degradation of the geomats in the laboratory was also analysed through exposure in a UV ageing chamber for 500 h and 1000 h. Degradation was quantitatively evaluated by testing the tensile strength of the geomat wires and thermal tests such as thermogravimetry (TG) and differential scanning calorimetry (DSC). The results showed that the geomat wires exposed in the field had a greater decrease in resistance compared to the samples exposed in the laboratory. In the samples collected in the field, it could be observed that the degradation of the virgin sample occurred earlier than in the exposed samples, contrary to what was observed in the TG tests carried out with the samples exposed in the laboratory. The DSC analysis showed that the samples had similar behaviours for the melting peaks. This evaluation of the wires of the geomats was presented as an alternative to analysing the tensile strengths of discontinuous geosynthetic materials such as the geomats. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T13:19:26Z 2023-07-29T13:19:26Z 2023-06-01 |
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/10.3390/ma16114148 Materials, v. 16, n. 11, 2023. 1996-1944 http://hdl.handle.net/11449/247561 10.3390/ma16114148 2-s2.0-85161524363 |
url |
http://dx.doi.org/10.3390/ma16114148 http://hdl.handle.net/11449/247561 |
identifier_str_mv |
Materials, v. 16, n. 11, 2023. 1996-1944 10.3390/ma16114148 2-s2.0-85161524363 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1808128219127218176 |