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Taylor and Smith to speak at TRB workshops on PEM January 7

Peter Taylor and Gordon Smith of the National Concrete Pavement Technology (CP Tech) Center will make presentations at a workshop on January 7, 2018 during the 97th annual meeting of the Transportation Research Board in Washington, DC. Peter and Gordon will be part of two sessions offering insights on Performance-Engineered Mixtures.
The workshops will cover recent innovations in the development of new test criteria to measure essential performance characteristics that assure concrete pavement durability. The sessions are aimed at both agency and contractor staff members who are looking at the new AASHTO PP 84 Provisional Guide Specification in the implementation of a PEM program. Peter will discuss “What Is the PEM Program and Why Do We Need It?” and Gordon will talk about “Implementing the PEM Vision.” 

CP Tech Center publishes trio of new reports on internal curing of concrete

What are the best ways to supply additional curing water to a concrete mixture? How does internal curing of concrete affect performance and long-term stability of concrete? Three new reports from the CP Tech Center offer up-to-date assessments of internal curing (IC) for pavements. Funding for the work came from the Federal Highway Administration, the Iowa Highway Research Board, and the Iowa Department of Transportation.

For more information, see:
Guide Specifications for IC
Impacts of IC
Life Cycle Cost Analysis of IC

New Moving Advancements into Practice (MAP) Brief available

The December 2017 MAP Brief provides an overview of the national experience with nonwoven geotextile separation layers as an alternative to hot-mix asphalt separation layers in unbonded concrete overlay applications. The new Map Brief is titled Performance Assessment of Nonwoven Geotextile Materials Used as Separation Layer for Unbonded Concrete Overlay of Existing Concrete Pavement Applications in the U.S. This publication from the CP Tech Center was written by Tom Cackler and is part of a project sponsored by the Federal Highway Administration.

Read the MAP Brief here.

CP Tech Center mentioned in new
federal report

The Accelerated Implementation and Deployment of Pavement Technologies 2016-2017 Annual Report to Congress from the U.S. Department of Transportation and the Federal Highway Administration documents the work of the AID-PT program and mentions engineered concrete mixtures, recycled concrete aggregates, and concrete overlays. The CP Tech Center has been actively involved in national efforts to advance these technologies and Center staff members are quoted and referenced in the report. 

Among those quoted is Peter Taylor, who is part of a task force that is developing the new guidelines to improve the abilities of the nation’s pavements to withstand challenging conditions. Said Peter, “At the heart of the specification is making sure that we are measuring the right things. We found that beyond concrete strength, most of the critical factors that we need for performance are durability related, and typically not captured in existing specifications.”

Read about it here.

Please forward this newsletter to your members as appropriate.
The goal of Resources is to let our partners know about events, new training opportunities, publications, and other products provided by the National Concrete Pavement Technology Center (CP Tech Center) at Iowa State University. Resources is distributed to state concrete paving associations, the National Concrete Consortium, FHWA, and other organizations.

Editor: Steve Jones,, 515-294-3479;         
CP Tech Center | 2711 S. Loop Drive | Suite 4700 | Ames | IA | 50010-8664
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