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- W2022972473 abstract "Abstract In this study, CPT and FVT tests are carried out on young, normally consolidated clay (Busan clay, which is an unusually thick deposit) at several locations in the Nakdong River deltaic plane in Busan, Korea. Two correlation techniques are applied for estimating the cone factors for which the uncorrected and corrected field vane strengths are used as the reference strength. First, due to the scattered data over the entire depth, a direct correlation between the tested results (a method generally used in practice), is applied for each depositional environment (facies) that is detected from the CPT profiles and the geological analysis. Secondly, a special attempt is made to determine the cone factors based on the fact that the ratios of the field vane strength and the (q t − σ v0) and (u 2 − u 0) values to the effective overburden pressure respectively, are approximately constant for each facies (the indirect correlation). It appears that the values obtained from the two techniques are almost identical. However, the direct correlation is sensitively affected by the fabric effects especially in some of the uppermost and lowermost layers of the clay and hence the arithmetic average values of each facies sometimes result in lower correlation coefficients. It is therefore inferred that the indirect correlation is more proficient for estimating the cone factors at each facies and can be used for practical applications. From the results of the indirect correlation, the cone factors of Busan clay are N kt = 7.13–13.06, N kt,corr = 9.45–17.07, N Δu = 6.10–9.88 and N Δu,corr = 8.41–12.24, the corrected values of which are considerably smaller or larger than the general ranges recommended by Lunne et al. (1997a). However, good correlations between N kt and I P , and between N Δu (or N kt ) and B q , are not found for the clay. Keywords: claycone penetrationcorrelationfield vaneundrained shear strength This work was supported by the Korea Science and Engineering Foundation (KOSEF) NRL Program grant funded by the Korea government (MEST) (No. ROA-2008-000-20076-0), and by Dong-A University, Busan Korea." @default.
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- W2022972473 date "2010-02-26" @default.
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- W2022972473 title "Correlations between CPT and FVT Results for Busan Clay" @default.
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- W2022972473 doi "https://doi.org/10.1080/10641190903358649" @default.
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