Evaluation of cyclic resistance of providence silts using mini-cone penetration and standard penetration tests.

Details

• Creators:
  Baxter, Christopher D. P.
• Corporate Creators:
  University of Rhode Island
• Corporate Contributors:
  Rhode Island. Dept. of Transportation. Office of Civil Rights
• Subject/TRT Terms:
  Cone Penetrometers Liquefaction Silt--Rhode Island--Testing Silts Soil Liquefaction--Rhode Island Soil Penetration Test Soils--Testing--Rhode Island--Soils--Testing Soil Tests
• Publication/ Report Number:
  FHWA-RIDOT-RTD-10-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Rhode Island
• Edition:
  Final.
• Corporate Publisher:
  Rhode Island. Dept. of Transportation
• Abstract:
  Most areas of coastal Rhode Island are underlain by thick layers of non-plastic silt and it is important to
  
  know if the existing standard-of-practice liquefaction potential evaluations (e.g. Robertson and Wride (1998) or
  
  Seed et al. (1985)) are accurate. The objective of this research was to critically evaluate the applicability of CPT
  
  and SPT based approaches to Providence silts. This was accomplished through a laboratory testing program
  
  involving the URI mini-cone calibration chamber and cyclic triaxial tests to develop a new relationship between
  
  cyclic resistance ratio and tip resistance for Providence silt. The new relationship was compared to the standard-ofpractice
  
  liquefaction potential evaluation methods from the literature. There was good agreement between the
  
  approaches which shows that the existing field-based CPT methods are applicable to Rhode Island silts. This is
  
  consistent with previous RIDOT funded research on the liquefaction potential evaluation of silts in Rhode Island
  
  (Bradshaw et al. 2007; 2007a; Baxter et al. 2008).
  
  An attempt was also made to evaluate SPT-based approaches in silt using the mini-cone and laboratory
  
  cyclic data. A qc/N60 correlation was evaluated from two loose silt sites in Rhode Island where SPT and CPTs
  
  were performed adjacent to each other. The agreement between blow counts and tip resistance was very poor, most
  
  likely due to the small number of tests and small range of in situ densities. Because of the poor agreement, it was
  
  not possible to directly evaluate the SPT-based liquefaction evaluation approaches in the study.
  
  
• Format:
  PDF
• Funding:
  SPR-229-2292
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:575a434b7fcf4aea0e776d815ef9269b1dfb28fc028d887f6f027945cd7d379b
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23895/dot_23895_DS1.pdf
• File Type:
  [PDF - 3.73 MB ]