Yoo, Jaewon, Im Jong Chul, Seo Minsu, Changyoung Kim, Sang-Kyun Kang
{"title":"A Study on Estimation of Degree of Compaction by Correction for Coarse Particle Ratio of Fill Material","authors":"Yoo, Jaewon, Im Jong Chul, Seo Minsu, Changyoung Kim, Sang-Kyun Kang","doi":"10.12814/JKGSS.2018.17.1.065","DOIUrl":null,"url":null,"abstract":"The degree of compaction of embankments is generally measured using the sand replacement method or a soil density gauge. However, these methods include coarse particles, which are relatively large. The degree of compaction is overestimated if the in-situ soil density is simply compared with the density obtained from a Proctor compaction test (KS F 2312, 2001), because the density of coarse particles is higher than that of soil. However, there is no recommended correction for the coarse particle ratio in Korea, thus intentionally increasing the degree of compaction for structures to which large loads are applied or for which compaction is critical. Here, a correction considering the Korean Proctor compaction test and the difference between the maximum allowable particle sizes was recommended after corrections for coarse particle ratios in other countries were collected and analyzed. The degree of compaction was re-estimated by applying the recommended correction to the results of both Proctor compaction and sand replacement tests. The degree of compaction without the correction of coarse particle ratio was overestimated, because the re-estimated degree of compaction decreased as the coarse particle ratio increased. The relatively accurate results obtained from the field application of the correction will offer long-term cost savings due to reduced maintenance fees during operation.","PeriodicalId":42164,"journal":{"name":"Journal of the Korean Geosynthetic Society","volume":null,"pages":null},"PeriodicalIF":0.4000,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Korean Geosynthetic Society","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.12814/JKGSS.2018.17.1.065","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The degree of compaction of embankments is generally measured using the sand replacement method or a soil density gauge. However, these methods include coarse particles, which are relatively large. The degree of compaction is overestimated if the in-situ soil density is simply compared with the density obtained from a Proctor compaction test (KS F 2312, 2001), because the density of coarse particles is higher than that of soil. However, there is no recommended correction for the coarse particle ratio in Korea, thus intentionally increasing the degree of compaction for structures to which large loads are applied or for which compaction is critical. Here, a correction considering the Korean Proctor compaction test and the difference between the maximum allowable particle sizes was recommended after corrections for coarse particle ratios in other countries were collected and analyzed. The degree of compaction was re-estimated by applying the recommended correction to the results of both Proctor compaction and sand replacement tests. The degree of compaction without the correction of coarse particle ratio was overestimated, because the re-estimated degree of compaction decreased as the coarse particle ratio increased. The relatively accurate results obtained from the field application of the correction will offer long-term cost savings due to reduced maintenance fees during operation.
堤防的压实程度一般采用换砂法或土壤密度计测量。然而,这些方法包括相对较大的粗颗粒。如果简单地将原位土壤密度与Proctor压实试验(KS F 2312, 2001)获得的密度进行比较,则会高估压实程度,因为粗颗粒的密度高于土壤的密度。然而,韩国没有建议对粗颗粒比进行修正,因此有意增加施加大载荷或对压实至关重要的结构的压实程度。这里,在收集和分析了其他国家粗颗粒比的修正后,建议考虑韩国的Proctor压实试验和最大允许粒径之间的差异进行修正。通过对Proctor压实和换砂试验的结果应用建议的修正,重新估计了压实程度。未校正粗粒比的压实度被高估,因为随着粗粒比的增加,重新估计的压实度减小。由于减少了作业期间的维护费用,现场校正获得的相对准确的结果将节省长期成本。