Volume 5, Issue 2 (June 2007)
IJCE 2007, 5(2): 104-117 |
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Naeini S, Ziaie-Moayed R. Evaluation of Undrained Shear Strength of Loose Silty Sands Using CPT Results. IJCE 2007; 5 (2) :104-117
URL: http://ijce.iust.ac.ir/article-1-317-en.html
URL: http://ijce.iust.ac.ir/article-1-317-en.html
Abstract: (24751 Views)
Series of undrained monotonic triaxial tests and cone penetration tests were conducted on
loose silty sand samples to study correlation between undrained shear strength of silty sands (Sus)
and piezocone test results. CPT tests were conducted at 27 silty sand samples in calibration
chamber. The results indicate that, in low percent of silt (0-30%), as the silt content increases, the
undrained shear strength (Sus) and cone tip resistance (qc) decreases. It is shown that, fines content
affects undrained shear strength (Sus) and cone tip resistance (qc) similarly. On the basis of obtained
results, equations were proposed to determine the normalized cone tip resistance (qc1n) and
undrained shear strength (Sus) of silty sand in term of fines content. Finally based on those
equations, a correlation between normalized cone tip resistance and undrained shear strength of
silty sand is presented. It is shown that the normalized undrained shear strength and normalized
cone tip resistance of loose silty sands (F.C. <30%) decreases with increase of silt contents.
Type of Study: Technical Note |
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