Evaluation and Guidance Development for Post-Grouted Drilled Shafts for Highways

The objective of this report is to provide recommendation for the cost-effective design and construction of post-grouted drilled shafts (PGDS) in appropriate transportation applications. The work included review of available technical literature; consultation with those currently involved with post-grouting, collection, and interpretation of results from full-scale load tests on post-grouted and conventional drilled shafts; investigation and evaluation of load transfer and improvement mechanisms for PGDS using numerical models, conduct of field load tests intended to evaluate improvement due to pre-mobilization alone; and development of recommendations for design and construction of PGDS based on the collective work. This report summarizes the current state of practice for post-grouting of drilled shafts in the U.S., documents the analyses and evaluations performed to evaluate alternative improvement mechanisms for PGDS, and describes the findings and recommendations developed based on the work performed. The report concludes with recommendations for future work needed to improve post-grouting practice for transportation infrastructure.

• Record URL:
  • https://www.fhwa.dot.gov/engineering/geotech/pubs/hif17024.pdf
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/42723
• Corporate Authors:

  ADSC: The International Association of Foundation Drilling

  8445 Freeport Parkway, Suite 325
  Irving, TX  United States  75063

  Federal Highway Administration

  Office of Infrastructure
  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Loehr, J Erik
  • Marinucci, Antonio
  • Duffy, Peggy Hagerty
  • Gómez, Jesús
  • Robinson, Helen
  • Day, Tayler
  • Boeckmann, Andrew
  • Cadden, Allen
• Publication Date: 2017-3

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 177p

Subject/Index Terms

• TRT Terms: Load tests; Road construction; State of the practice
• Uncontrolled Terms: Drilled shafts; Ground improvement; Post-grouting
• Subject Areas: Construction; Highways;

Filing Info

• Accession Number: 01671916
• Record Type: Publication
• Report/Paper Numbers: FHWA-HIF-17-024
• Contract Numbers: DTFH61-11-C-00049
• Files: NTL, TRIS, ATRI, USDOT
• Created Date: Jun 11 2018 4:12PM