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dc.contributor.authorFang, YSen_US
dc.contributor.authorChen, TJen_US
dc.contributor.authorHoltz, RDen_US
dc.contributor.authorLee, WFen_US
dc.date.accessioned2014-12-08T15:39:49Z-
dc.date.available2014-12-08T15:39:49Z-
dc.date.issued2004-01-01en_US
dc.identifier.issn0149-6115en_US
dc.identifier.urihttp://hdl.handle.net/11536/27211-
dc.description.abstractTo model plane-strain conditions in the laboratory, the frictional resistance between the soil and side walls of the soil box should be reduced as much as possible. Methods commonly employed for this purpose include a latex sheet with silicon grease ("grease method") or multiple layers of thin plastic sheeting ("plastic sheet method"). Interface friction angles are often measured by direct shear-type tests. In this paper, a new sliding block testing device for measuring the friction at the interface between soil and different materials at low stress conditions is described. Interface friction angles for eight different methods for reducing boundary friction were investigated using the proposed testing method. Test results indicated that the friction angle obtained with the plastic sheet method is nearly independent of the normal stress. On the other hand, the interface friction angle of the grease method was quite high under low normal stress conditions. Thus, the plastic sheet method appears to be a more appropriate technique under low normal stress conditions to reduce the boundary friction for laboratory scale model tests. As compared with the grease method, advantages of the plastic sheet method include constant friction angles, less time for preparation and cleanup, and lower cost. To investigate their applicability, both lubrication systems were used in some large-scale laboratory-retaining wall experiments. Earth pressure measurements obtained near the sidewalls indicated that, under a low normal stress, the plastic sheet method was more effective in reducing sidewall friction.en_US
dc.language.isoen_USen_US
dc.subjectsliding block testen_US
dc.subjectinterface frictionen_US
dc.subjectlaboratory testen_US
dc.subjectplastic sheeten_US
dc.subjectsilicone greaseen_US
dc.subjectretaining wallen_US
dc.subjectsanden_US
dc.titleReduction of boundary friction in model testsen_US
dc.typeArticleen_US
dc.identifier.journalGEOTECHNICAL TESTING JOURNALen_US
dc.citation.volume27en_US
dc.citation.issue1en_US
dc.citation.spage3en_US
dc.citation.epage12en_US
dc.contributor.department土木工程學系zh_TW
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.identifier.wosnumberWOS:000222818600001-
dc.citation.woscount8-
Appears in Collections:Articles