Evaluation of exhumed HDPE geomembranes used as a liner in Brazilian shrimp farming ponds
The present work evaluated three high-density polyethylene (HDPE) geomembranes exhumed from two shrimp farming ponds in the northeast of Brazil with nominal thicknesses of 0.8 mm. The CAM sample was exhumed from the bottom liner, and the CAM1 sample was exhumed from the slope liner, both after 8.25...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509521003247 |
| _version_ | 1811250649083412480 |
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| author | Fernando Luiz Lavoie Marcelo Kobelnik Clever Aparecido Valentin Érica Fernanda da Silva Tirelli Maria de Lurdes Lopes Jefferson Lins da Silva |
| author_facet | Fernando Luiz Lavoie Marcelo Kobelnik Clever Aparecido Valentin Érica Fernanda da Silva Tirelli Maria de Lurdes Lopes Jefferson Lins da Silva |
| author_sort | Fernando Luiz Lavoie |
| collection | DOAJ |
| description | The present work evaluated three high-density polyethylene (HDPE) geomembranes exhumed from two shrimp farming ponds in the northeast of Brazil with nominal thicknesses of 0.8 mm. The CAM sample was exhumed from the bottom liner, and the CAM1 sample was exhumed from the slope liner, both after 8.25 years of field exposure in the same pond. The third sample, called CAM2, was exhumed from another shrimp farming pond after 3.0 years of service. It can be observed that the environmental exposure changed the CAM1 sample’s behavior compared to the CAM sample. Changes in viscosity, stress cracking, and polymer unprotection by the antioxidants demonstrated that the environmental exposure in the field changed the initial conditions of the CAM1 sample. The CAM2 sample presented a high-density value, brittle tensile behavior, and a different thermal behavior from the other samples, as observed by the thermogravimetry (TG). Moreover, the CAM2 sample showed an event in dynamic mechanical analysis (DMA) presenting a significant decrease in stiffness. The first heating of differential scanning calorimetry (DSC) analysis showed an event before the melting points for all samples analyzed. Finally, the application of CAM1 and CAM2 samples as a liner can cause a system failure. |
| first_indexed | 2024-04-12T16:07:49Z |
| format | Article |
| id | doaj.art-326a52567c104a39acd618abd966225f |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-12T16:07:49Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-326a52567c104a39acd618abd966225f2022-12-22T03:25:59ZengElsevierCase Studies in Construction Materials2214-50952022-06-0116e00809Evaluation of exhumed HDPE geomembranes used as a liner in Brazilian shrimp farming pondsFernando Luiz Lavoie0Marcelo Kobelnik1Clever Aparecido Valentin2Érica Fernanda da Silva Tirelli3Maria de Lurdes Lopes4Jefferson Lins da Silva5Department of Civil Engineering, Mauá Institute of Technology, São Caetano do Sul 09580–900, Brazil; São Carlos School of Engineering, University of São Paulo-USP, São Paulo 13566–590, Brazil; Corresponding author at: Department of Civil Engineering, Mauá Institute of Technology, São Caetano do Sul 09580–900, Brazil.São Carlos School of Engineering, University of São Paulo-USP, São Paulo 13566–590, BrazilSão Carlos School of Engineering, University of São Paulo-USP, São Paulo 13566–590, BrazilDepartment of Civil Engineering, Mauá Institute of Technology, São Caetano do Sul 09580–900, BrazilCONSTRUCT-GEO, Department of Civil Engineering, University of Porto; Porto 4200–465, PortugalSão Carlos School of Engineering, University of São Paulo-USP, São Paulo 13566–590, BrazilThe present work evaluated three high-density polyethylene (HDPE) geomembranes exhumed from two shrimp farming ponds in the northeast of Brazil with nominal thicknesses of 0.8 mm. The CAM sample was exhumed from the bottom liner, and the CAM1 sample was exhumed from the slope liner, both after 8.25 years of field exposure in the same pond. The third sample, called CAM2, was exhumed from another shrimp farming pond after 3.0 years of service. It can be observed that the environmental exposure changed the CAM1 sample’s behavior compared to the CAM sample. Changes in viscosity, stress cracking, and polymer unprotection by the antioxidants demonstrated that the environmental exposure in the field changed the initial conditions of the CAM1 sample. The CAM2 sample presented a high-density value, brittle tensile behavior, and a different thermal behavior from the other samples, as observed by the thermogravimetry (TG). Moreover, the CAM2 sample showed an event in dynamic mechanical analysis (DMA) presenting a significant decrease in stiffness. The first heating of differential scanning calorimetry (DSC) analysis showed an event before the melting points for all samples analyzed. Finally, the application of CAM1 and CAM2 samples as a liner can cause a system failure.http://www.sciencedirect.com/science/article/pii/S2214509521003247GeomembraneHDPEShrimp farming pondsTGDSCDMA |
| spellingShingle | Fernando Luiz Lavoie Marcelo Kobelnik Clever Aparecido Valentin Érica Fernanda da Silva Tirelli Maria de Lurdes Lopes Jefferson Lins da Silva Evaluation of exhumed HDPE geomembranes used as a liner in Brazilian shrimp farming ponds Case Studies in Construction Materials Geomembrane HDPE Shrimp farming ponds TG DSC DMA |
| title | Evaluation of exhumed HDPE geomembranes used as a liner in Brazilian shrimp farming ponds |
| title_full | Evaluation of exhumed HDPE geomembranes used as a liner in Brazilian shrimp farming ponds |
| title_fullStr | Evaluation of exhumed HDPE geomembranes used as a liner in Brazilian shrimp farming ponds |
| title_full_unstemmed | Evaluation of exhumed HDPE geomembranes used as a liner in Brazilian shrimp farming ponds |
| title_short | Evaluation of exhumed HDPE geomembranes used as a liner in Brazilian shrimp farming ponds |
| title_sort | evaluation of exhumed hdpe geomembranes used as a liner in brazilian shrimp farming ponds |
| topic | Geomembrane HDPE Shrimp farming ponds TG DSC DMA |
| url | http://www.sciencedirect.com/science/article/pii/S2214509521003247 |
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