Past
Topics
Two recent trends have significant consequences for the design of drilled shaft concrete. First, longer service lives make drilled shaft durability imperative. Second, larger drilled shafts increase the challenges of providing workable, stable concrete mixes that avoid damage due to thermal distress. TRB hosted a webinar on Tuesday, May 25, 2021 from 2:00-3:30 PM Eastern that explored challenges associated with concrete for drilled shafts, especially large-diameter drilled shafts. Presenters discussed requirements for workability, stability, and long-term durability, including with respect to thermal issues. They also illustrated a design methodology for predicting drilled shaft concrete temperatures to establish performance criteria.
This webinar was organized by the TRB Standing Technical Committee on Foundations of Bridges and Other Structures.
The slides are linked in the meeting materials below. Click here to view the recording.
Webinar agenda and presenters
- Overview of drilled shaft concrete issues: Erik Loehr, University of Missouri
- Designing for durability to address thermal issues: Andy Boeckmann, Dan Brown and Associates
- Question and answer session: Monica Prezzi, Purdue University
The first 60 minutes of the webinar will be for presentations and the final 30 minutes will be reserved for audience questions.
Learning Objectives
At the end of this webinar, participants will be able to:
- Identify drilled shaft concrete issues
- Discuss requirements for workability, stability, and long-term durability of drilled shafts
- Apply design methodology to establish performance criteria
Professional Development Hours
Professional Development Hours (PDHs) earned on completion of this program were reported to the Registered Continuing Education Program (RCEP). Certificates of Completion are issued to all participants via the RCEP.net online system. Complaints about registered providers may be addressed to RCEP, 1015 15th Street, NW, 8th Fl., Washington, DC, 20005.