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Correlations between the CPT and the SPT for the Residual Soil in Korea  

Koo, Ja-Kap (한경대학교 토목공학과)
Yi, Chang-Tok ((주)두우건설엔지니어링 기술연구소)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.7, no.3, 2003 , pp. 231-239 More about this Journal
Abstract
Many foundation jobs have been designed and constructed in Korea with the sole information obtained from the SPT. The use of the CPT to estimate equivalent SPT values is becoming a common application for foundation design. The relationship between the CPT and the SPT has been determined in a number of studies over the past three decades. However a few papers have been published on the relationship between the CPT and the SPT in residual soil. Due to the large variation in published correlations between qt and N in residual soil, local correlations should be developed wherever possible. CPT tests have been carried out in the residual soil classified by SM in accordance with USCM and compared with SPT. Value of qt/N = 0.3 have been suggested for residual soil in Korea.
Keywords
SPT; CPT; Residual soil; Correlation;
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