The latest issue of the National Concrete Consortium (NCC) News* provides an update on the CP Road Map plan jointly developed and implemented by concrete pavement stakeholders, including ACPA and the CP Tech Center. Here are summaries of three reports that caught our eye:
Investigation of the Iowa DOT bridge deck epoxy injection process – This report summarizes how the injection of epoxy resin into the cracks and voids on concrete overlays has been used across Iowa. The technique has had positive results in preserving concrete overlays, which have been used on bridge decks in Iowa since the 1970s.
Environmental Impacts and Design on Performance – This report details a study of the effects of environmental factors and pavement design on pavement performance in the absence of heavy loads. Results showed an average of 36% and 24% of total damage was related to environmental factors for flexible and rigid pavements, respectively, at 15 years.
A Cost-Effective Ultra-High Performance Concrete (UHPC) – This report presents the development of UHPC using locally available materials in Colorado. Locally sourced materials are said to reduce construction costs when compared to commercially produced products. The report examines implications of various constituent types with an emphasis on silica compounds, steel and polypropylene fibers.
_______________________ * The NCC E-News is the newsletter of the Long-Term Plan for Concrete Pavement Research and Technology (CP Road Map), a national research plan developed and jointly implemented by the concrete pavement stakeholder community. If you’d like to find out more about the CP Road Map or learn how you can get involved, contact Dale Harrington (firstname.lastname@example.org | 515.290.4014). The NCC E-News is produced by Dale Harrington and Sabrina Shields-Cook.