首页|Performance Evaluation of Sieve and Curtain Pluviators for Reconstituted Sand Specimen in Model Box

Performance Evaluation of Sieve and Curtain Pluviators for Reconstituted Sand Specimen in Model Box

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  • NETL
  • NSTL
  • Korean Society Of Civil Engineers-Ksce
Reconstitution of the soil model is a basic step of physical modeling. Sand pluviation has been introduced as an effective way to prepare the soil specimen. However, it is difficult to create a model within the rigid soil container at a target soil density while ensuring the homogeneity of the entire soil model. To evaluate the spatial variability inside the container when the specimen was created using the pluviation method, a series of performance tests was conducted. In this study, two pluviation methods, sieve and curtain pluviations, were selected and examined in aspects of the target relative density of soil and its spatial variation. A bespoke sieve and commercially available curtain pluviators were employed. Each method was investigated by varying the test parameters, pouring mass rate, drop height, and sweep rate. Moreover, nine samples in a model box were used to evaluate the two-dimensional spatial variation of the relative density. Test results showed that the relative density increased with the drop height and sweep rate, but decreased with the pouring mass rate. Furthermore, the spatial variability reduced as the relative density increased. It was also observed that the curtain pluviator was more effective than the sieve pluviator in reducing spatial variability, with the exception of the high variability of soil density near the boundary wall of the box.

Soil sample preparationSieve pluviationCurtain pluviationSpatial variationSand

Kil-Wan Ko、Sung-Bok Lee、Tae-Sic Oh、Nam-Ryong Kim、Jae-Hyun Kim

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Dept. of Civil and Environmental Engineering, University of Southern California, Los Angeles, California, CA 90089, USA

Ceotechnical Centrifuge Testing Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea

Ceotechnical Centrifuge Testing Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea||Crade 7 Officer, Boryeong City, 77 Seongjusan-ro, Boryeong-si, Chungcheongnam-do 33783, Korea

K-Water Research Institute, 125 Yuseongdaero 1689 Beon-gil, Yuseong-gu, Daejeon 34045, Korea

Dept. of Civil Engineering, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon-si, Gangwon State 24341, Korea

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2024

10.1007/s12205-024-2093-1

KSCE journal of civil engineering

KSCE journal of civil engineering

EISCI
ISSN：1226-7988
年,卷(期)：2024.28(12)
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