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http://dx.doi.org/10.14481/jkges.2021.22.3.45

Utilization of LFWD for Compaction Management of Embankment in Expressway Construction  

Park, Yangheum (Department of Civil Engineering, Kumoh National Institute of Technology)
Jang, Ilyoung (Department of Civil Engineering, Kumoh National Institute of Technology)
Do, Jongnam (Korea Expressway Corporation Research Institute)
Publication Information
Journal of the Korean GEO-environmental Society / v.22, no.3, 2021 , pp. 45-51 More about this Journal
Abstract
The evaluation of the degree of compaction of the embankment area, which accounts for most of highway earthworks, is generally performed by a flat plate loading test. The plate loading test is a traditional test method and has high reliability in the field. However, as reaction force equipment must be carried out and it takes about 40 minutes per site during the test, there may be limitations in managing the entire expanse of earthworks. Meanwhile, in order to overcome this, the Ministry of Land, Infrastructure and Transport proposed a simple method of evaluating the level of compactness in the provisional guidelines for compaction management of the packaging infrastructure in 2010. However, it has not been utilized at the highway construction site until now, 10 years later. Therefore, this study attempted to verify the utility of the compaction evaluation method using LFWD (Light Falling Weight Deflectometer) of the impact loading method among the test methods suggested in the provisional guideline. To this end, the correlation was derived by conducting a plate loading test and an LFWD test for each site property and compaction degree. As a result of the test, there was no consistency of test data in the ground with a relative compaction of 80% or less. However, it was confirmed that the correlation has a tendency to increase beyond that. If the test method or test equipment is improved to ensure the consistency of the test values of the impact loading method in the future, it will play a big role in solving the blind spot for compaction management in the earthworks.
Keywords
Earthwork; Embankment; Compaction management; Compaction test; Plate loading test; Light Falling Weight Deflectometer;
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  • Reference
1 Ministry of Land, Transport and Maritime Affairs (2011), Provisional guidelines for pavement dubstructure vompaction management, pp. 41-56.
2 ASTM (2015), Standard test method for use of the dynamic cone penetrometer in shallow pavement applications, ASTM D6951-03.
3 DIN (2011), Soil classification for civil engineering purposes, DIN 18-196.
4 Koonnama Punthutaecha., Kitti manokhoon. and Warat Kongkitkul. (2009), Development of Falling Weight Deflectometer (FWD) for evaluating the pavement conditions, pp. 25-133.
5 Korea Expressway Corporation (2018a), Expressway construction special specification-soil embankment, EXCS 11 20 20.
6 Korea Expressway Corporation (2018b), Expressway construction specialized specification-backfill and backfill, EXCS 11 20 25.
7 Korea Expressway Corporation (2018c), A study on verification of consolidation management standards using LFWD, pp. 46-81.
8 Ministry of Land, Transport and Maritime Affairs (2010), A study on the development of Korean pavement design method and improvement of pavement performance, pp. H1-3-H1-14.