Title: Design with Construction in Mind
Speaker: Jon M. Young, Hawaii Asphalt Paving Industry
Discussion of three situations where keeping the construction aspect in mind may improve the design of the project: 1) consider the equipment that will be used, 2) options for centerline swales; and 3) uniform surface course thickness.
Lessons learned on the job site.
Title: Specifying Asphalt Pavement Mixes
Speaker: Jon M. Young, Hawaii Asphalt Paving Industry
It is important that the desired asphalt mix gets specified on the plans and in the specifications. This presentation reviews aggregate gradations and binders used in Hawaii and how they are shown in the plans and specifications.
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.
Title: Use of Recycled Materials in Pavements
Speaker: Jon M. Young, Hawaii Asphalt Pavement Industry
Can Hawaii construct “sustainable roads” using waste tires, plastic, glass, shingles, and old road pavement likely bound for landfill? Join us to learn about these potential recyclable materials and the status of their use in asphalt pavements on the mainland in Hawaii.
Title: Intro to Open-Graded Mixes
Speaker: Jon M. Young, Hawaii Asphalt Pavement Industry
An Intro to Open-Graded Mixes will answer the following questions:
– What are open graded mixes?
– Differences from dense graded mixes?
– Where have they been used in Hawaii?
– Where could they be used in the future?
– What’s next?
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 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.
