The use of slot filter in piezocone tests for site characterization of tropical soils
Autor(a) principal: | |
---|---|
Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3233/978-1-60750-031-5-973 http://hdl.handle.net/11449/71349 |
Resumo: | The use of piezocone tests with a slot filter filled with automotive grease for site characterization of tropical soils is assessed. Laboratory tests using the slot filter filled with automotive grease as well as the conventional porous piezo-element saturated with glycerin were carried out to evaluate the pore pressure (u 2) transducer response. CPTu tests using piezo-elements saturated with glycerin and the slot filter filled with grease were pushed side by side in different research sites in Brazil. Estimates of mechanical and hydraulic soil parameters were made based on pore pressure dissipation curves from using both techniques. Laboratory test results indicate that the pore pressure response using the slot filter with grease was delayed when compared to the piezo-element saturated with glycerin, since grease has a higher viscosity. For tropical soils, the records of u2 in piezocone tests using slot filter with grease presented larger peaks than with porous element saturated with glycerin. Records of u2 using the slot filter above the groundwater table suggest the increase of the degree of saturation in unsaturated zone, where porous filter can be desaturated by suction. The slot filter can be used to help the interpretation of the soil profile with deep groundwater level as well as to help detecting its position for some studied soils. The results shown high repeatability for all study sites. This technique is much easier to handle, especially for tropical soils, where the groundwater table is usually deep and pre-drilling is expensive and time consuming. © 2009 IOS Press. |
id |
UNSP_fc5a6c83848519fa93ef1785156a8fec |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/71349 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
The use of slot filter in piezocone tests for site characterization of tropical soilsPiezoconePore pressureSaturationSite characterizationTropical soilsDeep groundwatersDegree of saturationsGround water tableLaboratory testPiezo elementsPiezocone testPore pressure dissipationPorous elementsPorous filtersPressure responseSlot filtersSoil parametersSoil profilesStudy sitesUnsaturated zoneCharacterizationGeotechnical engineeringGlycerolGroundwaterSaturation (materials composition)Soil mechanicsTropicsSoilsThe use of piezocone tests with a slot filter filled with automotive grease for site characterization of tropical soils is assessed. Laboratory tests using the slot filter filled with automotive grease as well as the conventional porous piezo-element saturated with glycerin were carried out to evaluate the pore pressure (u 2) transducer response. CPTu tests using piezo-elements saturated with glycerin and the slot filter filled with grease were pushed side by side in different research sites in Brazil. Estimates of mechanical and hydraulic soil parameters were made based on pore pressure dissipation curves from using both techniques. Laboratory test results indicate that the pore pressure response using the slot filter with grease was delayed when compared to the piezo-element saturated with glycerin, since grease has a higher viscosity. For tropical soils, the records of u2 in piezocone tests using slot filter with grease presented larger peaks than with porous element saturated with glycerin. Records of u2 using the slot filter above the groundwater table suggest the increase of the degree of saturation in unsaturated zone, where porous filter can be desaturated by suction. The slot filter can be used to help the interpretation of the soil profile with deep groundwater level as well as to help detecting its position for some studied soils. The results shown high repeatability for all study sites. This technique is much easier to handle, especially for tropical soils, where the groundwater table is usually deep and pre-drilling is expensive and time consuming. © 2009 IOS Press.University of São Paulo, São Carlos-SPGolder Associates Brazil, São Paulo-SPSão Paulo State University, Bauru-SPUniversity of British Columbia, Vancouver-BCSão Paulo State University, Bauru-SPUniversidade de São Paulo (USP)Golder Associates BrazilUniversidade Estadual Paulista (Unesp)University of British ColumbiaMondelli, G.De Mio, G.Giacheti, H. L. [UNESP]Howie, J. A.2014-05-27T11:24:05Z2014-05-27T11:24:05Z2009-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject973-976http://dx.doi.org/10.3233/978-1-60750-031-5-973Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering, v. 2, p. 973-976.http://hdl.handle.net/11449/7134910.3233/978-1-60750-031-5-9732-s2.0-779534267370781618586438933Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineeringinfo:eu-repo/semantics/openAccess2024-06-28T12:57:05Zoai:repositorio.unesp.br:11449/71349Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-06-28T12:57:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The use of slot filter in piezocone tests for site characterization of tropical soils |
title |
The use of slot filter in piezocone tests for site characterization of tropical soils |
spellingShingle |
The use of slot filter in piezocone tests for site characterization of tropical soils Mondelli, G. Piezocone Pore pressure Saturation Site characterization Tropical soils Deep groundwaters Degree of saturations Ground water table Laboratory test Piezo elements Piezocone test Pore pressure dissipation Porous elements Porous filters Pressure response Slot filters Soil parameters Soil profiles Study sites Unsaturated zone Characterization Geotechnical engineering Glycerol Groundwater Saturation (materials composition) Soil mechanics Tropics Soils |
title_short |
The use of slot filter in piezocone tests for site characterization of tropical soils |
title_full |
The use of slot filter in piezocone tests for site characterization of tropical soils |
title_fullStr |
The use of slot filter in piezocone tests for site characterization of tropical soils |
title_full_unstemmed |
The use of slot filter in piezocone tests for site characterization of tropical soils |
title_sort |
The use of slot filter in piezocone tests for site characterization of tropical soils |
author |
Mondelli, G. |
author_facet |
Mondelli, G. De Mio, G. Giacheti, H. L. [UNESP] Howie, J. A. |
author_role |
author |
author2 |
De Mio, G. Giacheti, H. L. [UNESP] Howie, J. A. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Golder Associates Brazil Universidade Estadual Paulista (Unesp) University of British Columbia |
dc.contributor.author.fl_str_mv |
Mondelli, G. De Mio, G. Giacheti, H. L. [UNESP] Howie, J. A. |
dc.subject.por.fl_str_mv |
Piezocone Pore pressure Saturation Site characterization Tropical soils Deep groundwaters Degree of saturations Ground water table Laboratory test Piezo elements Piezocone test Pore pressure dissipation Porous elements Porous filters Pressure response Slot filters Soil parameters Soil profiles Study sites Unsaturated zone Characterization Geotechnical engineering Glycerol Groundwater Saturation (materials composition) Soil mechanics Tropics Soils |
topic |
Piezocone Pore pressure Saturation Site characterization Tropical soils Deep groundwaters Degree of saturations Ground water table Laboratory test Piezo elements Piezocone test Pore pressure dissipation Porous elements Porous filters Pressure response Slot filters Soil parameters Soil profiles Study sites Unsaturated zone Characterization Geotechnical engineering Glycerol Groundwater Saturation (materials composition) Soil mechanics Tropics Soils |
description |
The use of piezocone tests with a slot filter filled with automotive grease for site characterization of tropical soils is assessed. Laboratory tests using the slot filter filled with automotive grease as well as the conventional porous piezo-element saturated with glycerin were carried out to evaluate the pore pressure (u 2) transducer response. CPTu tests using piezo-elements saturated with glycerin and the slot filter filled with grease were pushed side by side in different research sites in Brazil. Estimates of mechanical and hydraulic soil parameters were made based on pore pressure dissipation curves from using both techniques. Laboratory test results indicate that the pore pressure response using the slot filter with grease was delayed when compared to the piezo-element saturated with glycerin, since grease has a higher viscosity. For tropical soils, the records of u2 in piezocone tests using slot filter with grease presented larger peaks than with porous element saturated with glycerin. Records of u2 using the slot filter above the groundwater table suggest the increase of the degree of saturation in unsaturated zone, where porous filter can be desaturated by suction. The slot filter can be used to help the interpretation of the soil profile with deep groundwater level as well as to help detecting its position for some studied soils. The results shown high repeatability for all study sites. This technique is much easier to handle, especially for tropical soils, where the groundwater table is usually deep and pre-drilling is expensive and time consuming. © 2009 IOS Press. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12-01 2014-05-27T11:24:05Z 2014-05-27T11:24:05Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3233/978-1-60750-031-5-973 Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering, v. 2, p. 973-976. http://hdl.handle.net/11449/71349 10.3233/978-1-60750-031-5-973 2-s2.0-77953426737 0781618586438933 |
url |
http://dx.doi.org/10.3233/978-1-60750-031-5-973 http://hdl.handle.net/11449/71349 |
identifier_str_mv |
Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering, v. 2, p. 973-976. 10.3233/978-1-60750-031-5-973 2-s2.0-77953426737 0781618586438933 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
973-976 |
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_ |
1803650358703030272 |