Title page for ETD etd-07122007-165444


Type of Document Master's Thesis
Author Pant, Rohit Raj
Author's Email Address rpant1@lsu.edu, rohitrajpant@hotmail.com
URN etd-07122007-165444
Title Evaluation of consolidation parameters of cohesive soils using PCPT method
Degree Master of Science in Civil Engineering (M.S.C.E.)
Department Civil & Environmental Engineering
Advisory Committee
Advisor Name Title
Dr. Khalid A. Alshibli Committee Co-Chair
Dr. Murad Abu-Farsakh Committee Co-Chair
Dr. Gouping Zhang Committee Member
Dr. Radhey Sharma Committee Member
Keywords
  • PCPT method
  • Consolidation settlement
Date of Defense 2007-07-09
Availability unrestricted
Abstract
The piezocone penetration test (PCPT) has emerged as most widely used in situ method for obtaining soil profile as well as physical properties. The PCPT method provides three independent and nearby continuous measurements with the depth; they are: tip stress (qc), sleeve friction (fs) and pore pressure (u1, u2, or u3). These measurements have been successfully used to correlate various soil properties such as undrained shear strength, unit weight and consolidation parameters. This study presents the evaluation of the PCPT interpretation methods for their capability to reasonably estimate the consolidation parameters namely constrained modulus, overconsolidation ratio and vertical coefficient of consolidation (cv) of cohesive soils in Louisiana. Statistical analyses were conducted to evaluate current interpretation methods and to explore new correlations. Test data collected previously from seven sites in Louisiana were used for this. Settlement analysis and monitoring results from five different project sites were used for field verification of PCPT correlations. User friendly Visual Basic program was developed to facilitate the analyses of PCPT data and estimate of magnitude and time rate of settlement under the embankment loading.
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