Two significant advances have recently emerged in predicting the in-place strength of concrete for pavements and facilitating earlier opening of pavements. The first is the development of a new American Association of State Highway and Transportation Officials (AASHTO) maturity test method for pavements. The second is ASTM C1074, an advancement in sensor technology, which captures time and temperature data from the field. TRB hosted a webinar on Wednesday, October 9, 2024 from 11:00 AM to 12:30 PM Eastern that informed agencies and practitioners of these new approaches. Presenters shared a case study from Iowa Department of Transportation (DOT) and how they utilized the maturity concept for determining early opening strengths for the past 25 years.

This webinar was a follow on to the 2024 TRB Annual Meeting Session 2125: Pavement Opening Strength: Why Not Maturity?

This webinar was sponsored by TRB’s Standing Technical Committee on Concrete Pavement Construction and Rehabilitation.

The slides are linked in the meeting materials. View the recorded webinar below.

Webinar agenda and presenters

1. Maturity test methods: ASTM C1074 versus the new AASHTO test method – Armen Amirkhanian, The University of Alabama

2. Iowa DOT’s 25 years of experience with maturity – Jim Grove, ATI Inc

3. The evolution of technology for maturity testing – Sabrina Garber, Transtec Group

4. Question and answer session moderated by Angela Folkestad, American Concrete Pavement Association

The first 60 minutes of the webinar were for presentations and the final 30 minutes were reserved for audience questions.

Learning Objectives

At the end of this webinar, participants can:

1. Understand the differences between ASTM C1074 and the newly introduced AASHTO pavement-specific maturity test method

2. Leverage the maturity concept using lessons learned from Iowa DOT

3. Record maturity data using the latest sensor technologies

Professional Development Hours

This webinar was delivered as a scheduled – e-learning live event and is categorized within RCEP as Technical, Health and Safety.

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.