{"paper_id":"4de10351-875b-4e88-a87a-48e5f396fbbf","body_text":"Liquidity index of the Lublin loess as a function of cone resistance qc from CPTU test | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Liquidity index of the Lublin loess as a function of cone resistance qc from CPTU test Krzysztof Nepelski, Agnieszka Lal, Monika Krzysiak, Izabela Skrzypczak, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4521680/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The paper presents the results of the calibration of an interpretive formula for the determination of I L based on cone resistance q c for loess soils of eolian facies. The studies were carried out on characteristic soils that occur in the Lublin region. For this purpose, three CPTU static soundings were selected in which a representative soil profile with a total length of 21 m was extracted. Boreholes were then drilled in close vicinity, at distances ranging within 1.0 m, and samples for laboratory testing were collected at intervals of 0.25 m. A total of 86 samples were tested and the liquidity index of each was determined. The I L values specified in the laboratory examinations were paired with the cone resistances q c averaged over the depth range corresponding to the sampling. The q c - I L distribution was then analysed and a formula correlating both parameters was derived. The cone resistance depends not only on water content but also on a number of other factors, including porosity, overconsolidation ratio, cementation, fraction distribution, degree of saturation, grain shape and alignment. Therefore, the estimation of I L from CPTU tests should be regarded as an approximation, while an accurate identification of the subsoil requires further investigations. Nevertheless, such information provides valuable knowledge in the initial stages of subsoil recognition, e.g. during design work. loess liquidity index cone resistance CPTU correlation Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {\"props\":{\"pageProps\":{\"initialData\":{\"identity\":\"rs-4521680\",\"acceptedTermsAndConditions\":true,\"allowDirectSubmit\":true,\"archivedVersions\":[],\"articleType\":\"Research Article\",\"associatedPublications\":[],\"authors\":[{\"id\":314874174,\"identity\":\"f91fc336-c306-4522-96fb-f60d960522df\",\"order_by\":0,\"name\":\"Krzysztof Nepelski\",\"email\":\"\",\"orcid\":\"\",\"institution\":\"Lublin University of Technology\",\"correspondingAuthor\":false,\"prefix\":\"\",\"firstName\":\"Krzysztof\",\"middleName\":\"\",\"lastName\":\"Nepelski\",\"suffix\":\"\"},{\"id\":314874175,\"identity\":\"583a4e74-73b9-41f7-9d18-556cbd89970b\",\"order_by\":1,\"name\":\"Agnieszka 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The studies were carried out on characteristic soils that occur in the Lublin region. For this purpose, three CPTU static soundings were selected in which a representative soil profile with a total length of 21 m was extracted. Boreholes were then drilled in close vicinity, at distances ranging within 1.0 m, and samples for laboratory testing were collected at intervals of 0.25 m. A total of 86 samples were tested and the liquidity index of each was determined. The \\u003cem\\u003eI\\u003c/em\\u003e\\u003csub\\u003eL\\u003c/sub\\u003e values specified in the laboratory examinations were paired with the cone resistances \\u003cem\\u003eq\\u003c/em\\u003e\\u003csub\\u003ec\\u003c/sub\\u003e averaged over the depth range corresponding to the sampling. The \\u003cem\\u003eq\\u003c/em\\u003e\\u003csub\\u003ec\\u003c/sub\\u003e- \\u003cem\\u003eI\\u003c/em\\u003e\\u003csub\\u003eL\\u003c/sub\\u003e distribution was then analysed and a formula correlating both parameters was derived. 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