Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil Interfaces
- Autores
- Ale, José; Rodríguez, Martín; Román, Claudio; Preciado, Humberto; Sánchez, Marsy
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Fil: Ale, José. Aviation Maintenance & Engineering Consulting; Perú.
Fil: Rodríguez, Martín. Ausenco; Perú.
Fil: Román, Claudio. Aviation Maintenance & Engineering Consulting; Perú.
Fil: Preciado, Humberto. Aviation Maintenance & Engineering Consulting; Perú.
Fil: Sánchez, Marsy. Aviation Maintenance & Engineering Consulting; Perú.
The mining industry is developing at a fast pace in the South America region, and demands the construction of important and larger mining structures such as: tailings impoundments, heap leach pads, rock waste facilities, etc. Heap leach pads by design, must contain leached mineral solutions through properly designed engineered liner systems. As part of the geotechnical design of a heap leach pad, a geotechnical characterization of the geomembrane-soil interface must be conducted. This characterization is performed by large scale direct shear (LSDS) testing, using confinement pressures which simulate the weight of the ore stacking in the leach pad. The types of geomembrane mainly used in the mining industry are the high and linear low density polyethylene (HDPE and LLDPE, respectively), single side textured (SST), and of variable thickness (1.5 and 2.0 mm). Many authors have studied the responses of geomembrane-soil interfaces (Koener et al., 2005; Koerner et al. 2007; Thiel, 2009; Parra et al., 2010; Breitenbach, 2011), and analyzed their strength envelopes considering linear and nonlinear geometries (Parra et al., 2012). This paper compiles LSDS test results obtained in Peru, and other data available in the existing literature, and analyzes their trends and range of values. Results from HDPE and LLDPE single side textured geomembranes are presented, with the textured side in contact with the underlying soil, and using confinement pressures of up to 800 kPa, which are equivalent to about 45 m of ore stacking. The results show a consistent trend in the residual shear strength envelopes of different types of geomembranes, regardless of geomembrane thickness. For high pressures, this trend could be non-linear. The values of adhesion range from 26 to 53 kPa, and angles of internal friction range from 16° to 26° for HDPE interfaces, and adhesion between 15 and 35 kPa, and angles of internal friction between 12° and 24° for LLDPE interfaces.
https://estore.infomine.com/Proceedings-of-the-Heap-Leach-Solutions-Conference-2013-for-PC-download-P789C1.aspx
Fil: Ale, José. Aviation Maintenance & Engineering Consulting; Perú.
Fil: Rodríguez, Martín. Ausenco; Perú.
Fil: Román, Claudio. Aviation Maintenance & Engineering Consulting; Perú.
Fil: Preciado, Humberto. Aviation Maintenance & Engineering Consulting; Perú.
Fil: Sánchez, Marsy. Aviation Maintenance & Engineering Consulting; Perú.
Otras Ingeniería Civil - Materia
-
América del Sur
Industria minera
Geosintéticos
Diseño geotécnico - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- Repositorio
.jpg)
- Institución
- Universidad Nacional de Córdoba
- OAI Identificador
- oai:rdu.unc.edu.ar:11086/29646
Ver los metadatos del registro completo
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Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil InterfacesAle, JoséRodríguez, MartínRomán, ClaudioPreciado, HumbertoSánchez, MarsyAmérica del SurIndustria mineraGeosintéticosDiseño geotécnicoFil: Ale, José. Aviation Maintenance & Engineering Consulting; Perú.Fil: Rodríguez, Martín. Ausenco; Perú.Fil: Román, Claudio. Aviation Maintenance & Engineering Consulting; Perú.Fil: Preciado, Humberto. Aviation Maintenance & Engineering Consulting; Perú.Fil: Sánchez, Marsy. Aviation Maintenance & Engineering Consulting; Perú.The mining industry is developing at a fast pace in the South America region, and demands the construction of important and larger mining structures such as: tailings impoundments, heap leach pads, rock waste facilities, etc. Heap leach pads by design, must contain leached mineral solutions through properly designed engineered liner systems. As part of the geotechnical design of a heap leach pad, a geotechnical characterization of the geomembrane-soil interface must be conducted. This characterization is performed by large scale direct shear (LSDS) testing, using confinement pressures which simulate the weight of the ore stacking in the leach pad. The types of geomembrane mainly used in the mining industry are the high and linear low density polyethylene (HDPE and LLDPE, respectively), single side textured (SST), and of variable thickness (1.5 and 2.0 mm). Many authors have studied the responses of geomembrane-soil interfaces (Koener et al., 2005; Koerner et al. 2007; Thiel, 2009; Parra et al., 2010; Breitenbach, 2011), and analyzed their strength envelopes considering linear and nonlinear geometries (Parra et al., 2012). This paper compiles LSDS test results obtained in Peru, and other data available in the existing literature, and analyzes their trends and range of values. Results from HDPE and LLDPE single side textured geomembranes are presented, with the textured side in contact with the underlying soil, and using confinement pressures of up to 800 kPa, which are equivalent to about 45 m of ore stacking. The results show a consistent trend in the residual shear strength envelopes of different types of geomembranes, regardless of geomembrane thickness. For high pressures, this trend could be non-linear. The values of adhesion range from 26 to 53 kPa, and angles of internal friction range from 16° to 26° for HDPE interfaces, and adhesion between 15 and 35 kPa, and angles of internal friction between 12° and 24° for LLDPE interfaces.https://estore.infomine.com/Proceedings-of-the-Heap-Leach-Solutions-Conference-2013-for-PC-download-P789C1.aspxFil: Ale, José. Aviation Maintenance & Engineering Consulting; Perú.Fil: Rodríguez, Martín. Ausenco; Perú.Fil: Román, Claudio. Aviation Maintenance & Engineering Consulting; Perú.Fil: Preciado, Humberto. Aviation Maintenance & Engineering Consulting; Perú.Fil: Sánchez, Marsy. Aviation Maintenance & Engineering Consulting; Perú.Otras Ingeniería Civil2013info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://hdl.handle.net/11086/29646enginfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2026-10-01T10:18:06Zoai:rdu.unc.edu.ar:11086/29646Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722026-10-01 10:18:07.525Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse |
| dc.title.none.fl_str_mv |
Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil Interfaces |
| title |
Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil Interfaces |
| spellingShingle |
Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil Interfaces Ale, José América del Sur Industria minera Geosintéticos Diseño geotécnico |
| title_short |
Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil Interfaces |
| title_full |
Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil Interfaces |
| title_fullStr |
Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil Interfaces |
| title_full_unstemmed |
Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil Interfaces |
| title_sort |
Trends of large scale direct shear strength results for LLDPE-HDPE geomembrane/soil Interfaces |
| dc.creator.none.fl_str_mv |
Ale, José Rodríguez, Martín Román, Claudio Preciado, Humberto Sánchez, Marsy |
| author |
Ale, José |
| author_facet |
Ale, José Rodríguez, Martín Román, Claudio Preciado, Humberto Sánchez, Marsy |
| author_role |
author |
| author2 |
Rodríguez, Martín Román, Claudio Preciado, Humberto Sánchez, Marsy |
| author2_role |
author author author author |
| dc.subject.none.fl_str_mv |
América del Sur Industria minera Geosintéticos Diseño geotécnico |
| topic |
América del Sur Industria minera Geosintéticos Diseño geotécnico |
| dc.description.none.fl_txt_mv |
Fil: Ale, José. Aviation Maintenance & Engineering Consulting; Perú. Fil: Rodríguez, Martín. Ausenco; Perú. Fil: Román, Claudio. Aviation Maintenance & Engineering Consulting; Perú. Fil: Preciado, Humberto. Aviation Maintenance & Engineering Consulting; Perú. Fil: Sánchez, Marsy. Aviation Maintenance & Engineering Consulting; Perú. The mining industry is developing at a fast pace in the South America region, and demands the construction of important and larger mining structures such as: tailings impoundments, heap leach pads, rock waste facilities, etc. Heap leach pads by design, must contain leached mineral solutions through properly designed engineered liner systems. As part of the geotechnical design of a heap leach pad, a geotechnical characterization of the geomembrane-soil interface must be conducted. This characterization is performed by large scale direct shear (LSDS) testing, using confinement pressures which simulate the weight of the ore stacking in the leach pad. The types of geomembrane mainly used in the mining industry are the high and linear low density polyethylene (HDPE and LLDPE, respectively), single side textured (SST), and of variable thickness (1.5 and 2.0 mm). Many authors have studied the responses of geomembrane-soil interfaces (Koener et al., 2005; Koerner et al. 2007; Thiel, 2009; Parra et al., 2010; Breitenbach, 2011), and analyzed their strength envelopes considering linear and nonlinear geometries (Parra et al., 2012). This paper compiles LSDS test results obtained in Peru, and other data available in the existing literature, and analyzes their trends and range of values. Results from HDPE and LLDPE single side textured geomembranes are presented, with the textured side in contact with the underlying soil, and using confinement pressures of up to 800 kPa, which are equivalent to about 45 m of ore stacking. The results show a consistent trend in the residual shear strength envelopes of different types of geomembranes, regardless of geomembrane thickness. For high pressures, this trend could be non-linear. The values of adhesion range from 26 to 53 kPa, and angles of internal friction range from 16° to 26° for HDPE interfaces, and adhesion between 15 and 35 kPa, and angles of internal friction between 12° and 24° for LLDPE interfaces. https://estore.infomine.com/Proceedings-of-the-Heap-Leach-Solutions-Conference-2013-for-PC-download-P789C1.aspx Fil: Ale, José. Aviation Maintenance & Engineering Consulting; Perú. Fil: Rodríguez, Martín. Ausenco; Perú. Fil: Román, Claudio. Aviation Maintenance & Engineering Consulting; Perú. Fil: Preciado, Humberto. Aviation Maintenance & Engineering Consulting; Perú. Fil: Sánchez, Marsy. Aviation Maintenance & Engineering Consulting; Perú. Otras Ingeniería Civil |
| description |
Fil: Ale, José. Aviation Maintenance & Engineering Consulting; Perú. |
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2013 |
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2013 |
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