Title: Review of a JMF Submittal
Speaker: Jon M. Young, Hawaii Asphalt Pavement Industry
The job mix formula (JMF) submittal is the mechanism to confirm that the mix being produced is in accordance with the project specifications. This session explains the information provided in a JMF submittal for a Marshall Mix design, including solving the mystery of the 6 graphs. Learn about Voids in Mineral Aggregate (VMA), which is one of the most important elements of a mix design.
HAPI is bringing the Asphalt Institute’s MDT course to Hawaii from July 29 to August 1. This MDT course (click here for the agenda) focuses on how advanced technicians, designers, and/or engineers use laboratory and project information in the mix design process to create long-lasting asphalt mixtures, supplemented with videos on tests and laboratory processes involved in asphalt mix design.
For Hawaii residents, the registration fee is $2,000 for HAPI members and $2,350 for non-members.
Please contact me at jon@hawaiiasphalt.org for additional information.
Speaker: Jennifer Lynch, Research Biologist, National Institute of Standards and Technology and Co-Director, Hawaii Pacific University’s Center for Marine Debris Research
Plastic pollution is a global environmental problem that is predicted to worsen. Hawaiʻi is an unfortunate hotspot with record quantities of plastic washing ashore from distant locations and harming coral reefs, marine organisms and aesthetics of the natural landscape. Much of this plastic pollution comes in the form of foreign derelict fishing gear. Finding a long-term use for this material, such as improving asphalt roads by replacing a portion of the binder with plastic from derelict fishing nets, could spur more environmental cleanup and create a win-win for the environment and economy of Hawaiʻi. Many countries and states are recycling plastics into asphalt already, but the public has warranted concerns that the pavement may produce unintended environmental damages, such as releasing microplastics or leaching plastic additives into aquatic habitats. The National Institute of Standards and Technology (NIST) and Hawaiʻi Pacific University’s Center for Marine Debris Research (CMDR) has developed methods for environmental chemical measurements. Working with the Hawaiʻi Department of Transportation, CMDR will test microplastic and plastic additive leaching from asphalt paved with recycled plastics. In addition, the University of Hawaiʻi will test the mechanical performance of the asphalt. Our future data will provide more understanding and information on potential of recycling plastics into roadways.
