Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory

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dc.contributor.authorLins da Silva, Jefferson
dc.contributor.authorValentin, Clever Aparecido
dc.contributor.authorKobelnik, Marcelo
dc.contributor.authorPedroso, Gabriel Orquizas Mattielo [UNESP]
dc.contributor.authorAparício-Ardila, Maria Alejandra
dc.contributor.authorAraújo Júnior, Luiz Paulo Vieira de
dc.contributor.authorLuz, Marta Pereira da
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionEletrobras Furnas
dc.contributor.institutionPontifical Catholic University of Goiás-PUC Goiás
dc.date.accessioned2023-07-29T13:19:26Z
dc.date.available2023-07-29T13:19:26Z
dc.date.issued2023-06-01
dc.description.abstractA 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.en
dc.description.affiliationSão Carlos School of Engineering (EESC) University of São Paulo
dc.description.affiliationGuaratinguetá Faculty of Engineering and Sciences (FEG) São Paulo State University (UNESP)
dc.description.affiliationCivil Engineering Department Federal University of Sao Carlos
dc.description.affiliationDepartment of Dam Safety and Technology Eletrobras Furnas, BR153, km 510, Zona Rural
dc.description.affiliationIndustrial and Systems Engineering Postgraduate Program (MEPROS) Pontifical Catholic University of Goiás-PUC Goiás
dc.description.affiliationUnespGuaratinguetá Faculty of Engineering and Sciences (FEG) São Paulo State University (UNESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: PQ 309841/2021-6
dc.description.sponsorshipIdCNPq: PQ 315583/2021-5
dc.identifierhttp://dx.doi.org/10.3390/ma16114148
dc.identifier.citationMaterials, v. 16, n. 11, 2023.
dc.identifier.doi10.3390/ma16114148
dc.identifier.issn1996-1944
dc.identifier.scopus2-s2.0-85161524363
dc.identifier.urihttp://hdl.handle.net/11449/247561
dc.language.isoeng
dc.relation.ispartofMaterials
dc.sourceScopus
dc.subjecterosion-control techniques
dc.subjectgeomat
dc.subjectgeosynthetics
dc.subjectslope
dc.titleMechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratoryen
dc.typeArtigo
unesp.author.orcid0000-0002-2226-4950[1]
unesp.author.orcid0000-0002-2887-2834[2]
unesp.author.orcid0000-0001-6879-3172[3]
unesp.author.orcid0000-0002-9419-6838[4]
unesp.author.orcid0000-0001-8061-0121[5]

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