2018, Hawaii, Pavement Treatments

FHWA Pavement Preservation Workshop – May 2018

The Pavement Preservation workshop took place on May 1 – 2, 2018 at the Manoa Grand Ballroom in Honolulu.  Just over 60 people attended from the FHWA, all 4 HDOT Districts, the 4 Counties, and industry.

Master of ceremonies Casey Abe, for the Hawaii DOT welcomed everyone to the workshop.

Dr. Adrian Ricardo Archilla from the University of Hawaii (UH), College of Engineering, got things started with an overview of the UH research of pavement treatments used in Hawaii.  In late 2014, various treatments donated by HAPI members were applied to City roads.  Over the next three years, Dr. Archilla monitored the performance of each and concluded that the treatments have performed as expected.

County of Maui engineers Wendy Kobashigawa and Kristi Ono presented the pavement management system, iWorQ, that they use to manage their pavement preservation program and funding for the County’s 550 miles of roadway.  It is used to prioritize and schedule road projects by districts or by recommended treatments.   Treatments utilized by the County include crack seal, seal coating, slurry seal, thin overlays, mill and fill, and rehabilitation.  Funding for their pavement preservations projects has been steady over the 7 years, averaging just over $5 million annually.  The budget for 2019 is about $6.5 million.

The remainder of the workshop included presentations made by Jason Dietz and Scott Metcalf.  Dietz is the Pavement and Materials Engineer for the FHWA Resource Center.  Metcalf is Vice President – Pavement Preservation & Specialty Products.  They presented the following topics:

– Introduction to pavement maintenance concepts
– Influence of pavement condition on project selection
– Preventative maintenance treatments including the following:
– Crack Filling and Sealing
– Seal Coats (what we are doing now)
– Fog Seals
– Rejuvenators
– Sand Seals
– Scrub Seals
– Chip Seals, including variations
– Hot Applied Binder Chip Seal
– Slurry Seals
– Micro Surfacing
– Cold In-Place Recycling
– Hot In-Place Recycling
–  Thin HMA Overlay
– Ultra-Thin Friction Course
– Techniques for determining pavement treatment feasibility

There were also two group activities.  Each group was assigned a different road to evaluate.  In the first activity, groups evaluated pavements for pavement maintenance and shared their decision on the suitability of their section for preventive maintenance.  In the second activity, groups identified feasible treatments and strategies.

The knowledge gained at the workshop will help government agencies and HAPI as they continue to work together to determine viable pavement treatments for our roads.

The link below is to a folder with the presentations by:
– The University of Hawaii (Dr. Archilla)
– The County of Maui (Wendy Kobashigawa and Kristi Ono)
– The FHWA (Jason Dietz and Scott Metcalf)

The list of attendees is also in the folder.  Please visit: https://app.box.com/s/kyt5bnyu2rw59j0kgs12pmb49e345uax

Photos from the 1.5 day workshop