The light-weight deflectometer (LWD) has seen increased use in quality control and quality assurance testing. Pavement applications include general assessment of unbound layer stiffness and controlling the quality of compacted aggregate and soil layers. TRB hosted a webinar on Thursday, February 23, 2023 from 1:00 PM to 2:00 PM Eastern that shared test set up, data analysis, and limitations of the LWD device. Presenters shared two case studies of conventional and non-conventional uses of LWDs and discuss any potential issues to ensure proper data collection and analysis.
This webinar was a follow on to the TRB Webinar: Ensuring Construction Quality Assurance with Light-Weight Deflectometers held on September 30, 2021.
This webinar was sponsored by TRB’s Standing Technical Committees on Mechanics and Drainage of Saturated and Unsaturated Geomaterials and Stabilization of Geomaterials and Recycled Materials.
The slides and recording are available.
Webinar agenda and presenters
Use of LWDs for quality control of backfill layers for airfield pavement repairs – Jami Lynn Rushing, U.S. Army Engineer Research and Development Center
Multi-year experience with use of LWD as a quality assurance device for compaction – Niosha Afsharikia, WSP
Question and answer session moderated by William Carruth, U.S. Army Engineer Research and Development Center
The first 40 minutes of the webinar will be for presentations and the final 20 minutes will be reserved for audience questions.
Learning Objectives
At the end of this webinar, participants will be able to:
Understand the light-weight deflectometer’s use as a quality assurance test device and conventional and non-conventional applications
Identify best practices for test set up and data analysis with the light-weight deflectometer test device
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.