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Evolution of Small Strain Soil Stiffness during Freeze-Thaw Cycle: Transition from Capillarity to Cementation Examined Using Magnetic and Piezo Crystal Sensors

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Abstract
Freeze-thaw cycles caused by seasonal temperature fluctuations significantly affect the geotechnical engineering properties. This study investigated the crucial role of water distribution patterns in the characterization of elastic wave properties for the fine F-110 sand during a freeze-thaw cycle. Sand specimens with four different water distribution patterns were prepared, namely homogeneously-mixed, evaporation-driven, vertically-, and horizontally-layered specimens. The P-and S-wave signatures of the specimens were monitored using piezo crystal sensors. Results indicated the criticality of water distribution patterns in the determination of small-strain soil properties even though the specimens had identical global water saturation. The nuclear magnetic resonance-based water volume depth profiles indicated that the evaporation-driven specimens had more heterogeneous pore-invasive ice-bonding layers at a high water saturation region; by contrast, the drying process facilitated uniform meniscuses around the particle contacts near the air percolation threshold. Elastic wave measurements for laboratory-prepared specimens might over/underestimate the small-strain soil stiffness of sediments in nature, wherein the drying processes prevailed to control the water saturation. This study highlighted a clear transition from capillary-controlled to cementation-controlled elastic wave properties during temperature oscillations.
Author(s)
김종찬박정희원종묵이종섭
Issued Date
2021
Type
Article
Keyword
capillary pressurecementationdegree of water saturationelastic wavefreeze-thaw cyclewater distribution patterns
DOI
10.3390/s21092992
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9194
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_doaj_primary_oai_doaj_org_article_f54354fd7b124136be23bd401a8b2c7d&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Evolution%20of%20Small%20Strain%20Soil%20Stiffness%20during%20Freeze-Thaw%20Cycle:%20Transition%20from%20Capillarity%20to%20Cementation%20Examined%20Using%20Magnetic%20and%20Piezo%20Crystal%20Sensors&offset=0&pcAvailability=true
Publisher
SENSORS
Location
스위스
Language
영어
ISSN
1424-8220
Citation Volume
21
Citation Number
9
Citation Start Page
2292
Citation End Page
2292
Appears in Collections:
Engineering > Civil and Environmental Engineering
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