References to related material datacite.relatedItem.IsSupplementTo	https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-945638
Type of the data datacite.resourceTypeGeneral	Image
Total size of the dataset datacite.size	73030230962
Author dc.contributor.author	Bacic, Bozana
Upload date dc.date.accessioned	2025-02-07T14:48:10Z
Publication date dc.date.available	2025-02-07T14:48:10Z
Data of data creation dc.date.created	2023
Publication date dc.date.issued	2025-02-07
Abstract of the dataset dc.description.abstract	These data serve as the basis for the extraction and comparison of soil fabric in the case of two different natural sands and one mixture of glass beads prepared via sedimentation under water (UWFP). Furthermore, data for one coarse sand prepared using spoon slurry deposition (SSD) and via 45-degree sedimentation under water (45) are provided. These files support the publication: https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-945638.
Public reference to this page dc.identifier.uri	https://opara.zih.tu-dresden.de/handle/123456789/1279
Public reference to this page dc.identifier.uri	https://doi.org/10.25532/OPARA-746
Publisher dc.publisher	Technische Universität Dresden
Licence dc.rights	Attribution-NonCommercial-NoDerivatives 4.0 International	en
URI of the licence text dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/
Specification of the discipline(s) dc.subject.classification	4::43
Title of the dataset dc.title	µCT images for soil fabric extraction
Project abstract opara.project.description	DFG project number: 316451575 (HE 2933/10-1, HE 2933/10-2 and WI 3180/6-2): The build-up of excess pore water pressure (PWP) usually takes place in loose, saturated, coarse-grained soils when subjected to external shear loading (monotonic or cyclic) under prevented water drainage. When the amount of the excess PWP reaches the value of the total stress, the grain structure collapses and the shear strength and stiffness of the soil disappear - the soil behaves as a liquid. Such soil phenomenon is commonly referred to as soil liquefaction. Experimental laboratory testing of the excess PWP build-up in coarse-grained soils is almost restricted to sophisticated undrained cyclic triaxial and simple shear tests. A novel experimental method, the PWP Tester, enabling a simple and fast testing of the excess PWP accumulation in coarse-grained soils has been designed within this project. The method provides rapid and reproducible measurements, with each test lasting approximately 30 minutes. During testing, excess PWP evolution is measured under undrained conditions during cyclic shearing of a saturated and consolidated cylindrical sand specimen. Results indicate that higher soil density and consolidation pressure, along with lower shear amplitudes, reduce excess PWP generation, confirming the method’s reliability. Validation was further achieved by comparing results from the PWP Tester with those from undrained cyclic triaxial tests performed on different sands. Specimens in the PWP Tester were prepared through water sedimentation, resulting in a similar initial soil fabric across different sands, as confirmed by µCT imaging. Despite significant variations in relative density resulting from sand sedimentation under water, the rate of excess PWP build-up remained similar across different sands. This suggests that soil fabric has an equal or even greater influence on excess PWP accumulation than relative density. The PWP Tester’s straightforward and time-efficient procedure, combined with its reliable results, highlights its potential as an effective index test for assessing the tendency of soils to generate excess PWP.
Project title opara.project.title	DFG Project - Beurteilung der Verflüssigungsneigung grobkörniger Böden anhand eines Identifikationsversuchs

µCT images for soil fabric extraction

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