Assessing subgrade strength using an instrumented dynamic cone penetrometer
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jong-Sub | - |
dc.contributor.author | Kim, Sang Yeob | - |
dc.contributor.author | Hong, Won-Taek | - |
dc.contributor.author | Byun, Yong-Hoon | - |
dc.date.accessioned | 2021-09-01T11:03:22Z | - |
dc.date.available | 2021-09-01T11:03:22Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2019-08 | - |
dc.identifier.issn | 0038-0806 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/64048 | - |
dc.description.abstract | Subgrade strength is an important aspect to be considered when designing unsurfaced roads and working platforms for pavement structures. Furthermore, dynamic cone penetration tests are used to characterize the subgrade strength. However, the results of dynamic cone penetration tests, including the penetration depth per blow, can be affected by transferred energy and the verticality of the cone penetrometer. The objective of this paper is to characterize the subgrade strength using an instrumented dynamic cone penetrometer (DCP). The instrumented DCP includes a load cell and an accelerometer, located on the cone tip, and measures the dynamic responses of force and velocity over elapsed time. Weathered soil is compacted with three different dry unit weights in a square-shaped container for lab-scale dynamic cone penetration tests. Using instrumented and standard DCPs, several dynamic cone penetration tests are performed, and the dynamic cone penetration index (DCPI) is recorded along the depth profiles. Based on the dynamic responses at the cone tip of the instrumented DCP and the principles of energy conservation, the dynamic cone resistance is suggested as a new strength index. The experimental results show that the dynamic cone resistance increases with the depth of the instrumented DCP, providing a reliable subgrade strength profile in the soil. In addition, the correlation between the DCPI obtained from the instrumented DCP and the dynamic cone resistance suggests that the dynamic cone resistance is more sensitive than the DCPI for stiff soil. Based on the correlation values of the dynamic cone resistance obtained from the instrumented DCP, the internal friction angle and California bearing ratio values can be estimated with a high degree of reliability. This study demonstrates that use of the instrumented DCP may be a promising in situ testing method for the reliable characterization of subgrade strength. (C) 2019 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | JAPANESE GEOTECHNICAL SOC | - |
dc.subject | PENETRATION TESTS | - |
dc.subject | SOIL | - |
dc.subject | LANDSLIDE | - |
dc.subject | RAINFALL | - |
dc.subject | SOFT | - |
dc.title | Assessing subgrade strength using an instrumented dynamic cone penetrometer | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Sub | - |
dc.identifier.doi | 10.1016/j.sandf.2019.03.005 | - |
dc.identifier.scopusid | 2-s2.0-85065789620 | - |
dc.identifier.wosid | 000488957500011 | - |
dc.identifier.bibliographicCitation | SOILS AND FOUNDATIONS, v.59, no.4, pp.930 - 941 | - |
dc.relation.isPartOf | SOILS AND FOUNDATIONS | - |
dc.citation.title | SOILS AND FOUNDATIONS | - |
dc.citation.volume | 59 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 930 | - |
dc.citation.endPage | 941 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Geology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Geological | - |
dc.relation.journalWebOfScienceCategory | Geosciences, Multidisciplinary | - |
dc.subject.keywordPlus | PENETRATION TESTS | - |
dc.subject.keywordPlus | SOIL | - |
dc.subject.keywordPlus | LANDSLIDE | - |
dc.subject.keywordPlus | RAINFALL | - |
dc.subject.keywordPlus | SOFT | - |
dc.subject.keywordAuthor | CBR | - |
dc.subject.keywordAuthor | DCP | - |
dc.subject.keywordAuthor | Dynamic cone resistance | - |
dc.subject.keywordAuthor | Instrumented DCP | - |
dc.subject.keywordAuthor | Subgrade strength | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.