June 2006

FUEL AND ASPHALT MANAGEMENT PUBLICATIONS
A special grouping of NAPA publications related to energy management and recycling has been created in NAPA's new online store. The publications include Recycling Packages for HMA (SR-187), Recycling HMA Pavements (IS-123), Fundamentals of the Operation & Maintenance of the Exhaust Gas System (IS-52), Applying IS-52 (TAS-22), Five Ways to Save Your Asphalt (SR-191e), and Performance of Open-Graded "Big Rock Mixes" in Tennessee and Indiana (IS-104e). These publications, and others in the category, offer common-sense solutions for conserving asphalt and making the most of your energy reserves during these days of price and supply volatility. For more information, go to the NAPA online store at hotmix.org. For orders over $100 shipping costs just 1 cent. Hurry, offer expires on June 12.

May 2006

NCAT Asphalt Technology News, Spring, 2006

April 2006

FOCUS ON RECYCLING

THE ADVANTAGE OF CONTRACTOR RETAINED ASPHALT MILLINGS
The value of asphalt rotomillings to the contractor from pavement rehabilitation projects has increased significantly with the ever increasing costs of construction materials, including asphalt and aggregate. Many projects specify that the Owner/Agency retains the ownership of the millings for maintenance use. Lower bid prices would result from allowing the contractor to retain the rotomillings or a portion of them. We are currently discussing with CDOT increasing the opportunity for contractor-retained rotomillings on future projects.

RESOURCES ON RECYCLED ASPHALT PAVEMENT (RAP)
One of the most informative sessions at the Annual Conference was a presentation entitled, "Using RAP with Confidence - Maximizing RAP Percentage while Maintaining High Quality" by Tom Blair, EDW C. Levy Co., Novi, MI. The presentation is posted on the Annual Conference website. Also, two excellent resources for information on recycled asphalt pavement (RAP) are the Asphalt Pavement Alliance (APA) website at www.asphaltalliance.com and the National Center for Asphalt Technology (NCAT) website at www.eng.auburn.edu/center/ncat/. The latest of research and industry best practices are located at these two e-locations.

TIPS ON FORENSIC ANALYSIS OF ASPHALT BINDERS The focus of CAPA's April Innovations & IdeasForum was the forensic analysis of asphalt binders. Three very informative presentations were made by Marshall Shackelford - Sem Materials, L.P., Kim Gilbert - CDOT, and Ken Grybowski - PRI Asphalt Technologies. Ken shared several key points to consider as part of any forensic anslysis. They include the following:

•Most problems tend to be people or process problems and not material problems
•It is important to perform an internal (first tier) review and investigation before hiring an expert to perform an investigation
•There are often easy solutions to problems (moisture change in the aggregate, a burner fuel leak, temperature controls not working properly, etc.)
A copy of Ken's presentation, "Forensic Analysis of Asphalt Binders," is posted on the CAPA website.

April 2006

ASPHALT TRAINING MADE EASY
One of the more effective ways to train asphalt crews and field personnel is through the use informal "Tailgate Training" opportunities. The National Asphalt Pavement Association (NAPA) has developed easy-to-use training aids called "Toolbox Talks." Truck Exchange, longitudinal joint construction, forces of compaction, rolling procedures, and material transfer vehicles are the five subjects covered in the talks. CAPA has purchased a set of the visual aids and they are available on a first-come first-serve check out basis to our members. For more information, contact Tom Clayton at (303) 741-6148

CONSTRUYENDO PAVIMENTOS DE CALIDAD DE MEZCLA ASFÁLTICA CALIENTE
Construyendo Pavimentos de Calidad de Mezcla Asfáltica Caliente ? Una Guía de Para Resolver Problemas en la Pavimentación, QIP-112 (S). NAPA announces the publication of the third Spanish-language version of a NAPA technical manual, the popular Constructing Quality Hot Mix Asphalt Pavements - A Troubleshooting Guide and Construction Reference. The Mexican Asphalt Pavement Association (Asociacion Mexicana del Asfalto, A.C.) translated the document in consultation with NAPA Members who are fluent in Spanish. The newly translated publication contains all the same information, photographs, and illustrations found in NAPA's original guide. This handy guide fits into your coat pocket or glove compartment and will help you in identifying possible solutions to a number of potential problems that may occur during paving operations. Easy-to-read format makes problem solving simple and quick. The publication is 31 pages; NAPA Member price is $6.00. To order, visit the publication section of the NAPA website click here.

PROJECT SUCCESS THROUGH IMPROVED JOB SITE COMMUNICATION Communication and job site cooperation is a key to project success. One very important way to ensure that a project gets started off on the right foot is to have a productive and meaningful pre-paving meeting. A joint CAPA/CDOT Task Force has been established to revamp CDOT's Pre-Paving Meeting Agenda Guideline. The guideline has been streamlined and updated. It is in pre-final format and available for review and comment. For comments, please contact Tom Clayton at (303) 741-6150. It is expected that the final Guideline will be available for use on all CDOT projects by June 1.