HAPI Newsletter - July 2018    
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A word from Jon M. Young, Executive Director                Like us on Facebook  
   
Seal of the Hawaii Department of Transportation copyIn May, the FHWA conducted a pavement preservation workshop to present the various pavement treatments that are available.  Government agencies have already been using some of these treatments, such as slurry seal, to maintain their roads.  This month’s feature article is about the Hawaii Department of Transportation’s crack seal repair efforts at various location on Oahu.  Click here to learn what was done.
 
HDOT-Material Sampling and Reserach BranchThe Hawaii Department of Transportation Materials Testing and Research Branch has hired the Hawaii Asphalt Paving Industry to conduct their periodic Field Sampling and Testing Qualification Program (FSTQP) – Asphalt Module, beginning September 1, 2018.  Click here to learn more about this exciting opportunity for HAPI.
  
Interstate 440 at Nashville will be widened to six lanes and repavedThe Tennessee Department of Transportation believes it could shave two or more years off the reconstruction of Interstate 440 at Nashville if it closes entire road segments rather than following the traditional construction method of closing one lane at a time and opening the road to traffic at the end of each work day.  Could more asphalt pavement projects be constructed in this manner? Click here to learn more about the project.
 
DMK and AssociatesWelcome to new HAPI members DMK & Associates from the island of Kauai.  Their goal is to provide you with “Service with Peace of Mind!”  They are a SealMaster Hawaii applicator of pothole repair, and asphalt sealing and rejuvenation. Please visit their website (www.dmkhawaii.com) for additional information.

 
 

 

Save the Dates! 

 

Mark Your Calendars!Mark your calendar for our upcoming training workshops.  For a description of the workshops, click here to visit our HAPI Training Program website.  Times and locations of the various workshops will be provided in future newsletters.

  • Our Understanding a Job Mix Formula workshop returns on Wednesday, September 12th.
  • ​The Use of Geosynthetics for Asphalt Pavements workshop returns to Oahu on October 9th and to Hilo on October 11th
  • The inaugural session of the Airport Pavement Maintenance workshop will be held on November 2nd.
  • Your opportunity to take the AASHTO TSP•2 Preservation Treatment Certification Exams will be on November 14th.
  •  Closing out the year will be our PaveXpress/PaveInstruct workshop on November 15th
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Featured  Article 
 
Featured Members: SealMaster Hawaii and Safety Systems and Signs Hawaii, Inc.
Contractor: Walker-Moody Asphalt Maintenance Ltd. 
Project Title:
Crack Seal Repairs at Various Locations, Island of Oahu
Location: Kunia Road, H-1 Freeway from Kapiolani interchange to H-1/H201 interchange, H-201 Freeway,
and Halawa Heights Road

Client or Agency: Hawaii Department of Transportation, Highways Division
 

Moisture intrusion into and through cracks in pavement is a leading cause of base erosion and pavement failure.  Moisture intrusion can result in severe fatigue (alligator) cracking which is the precursor to the development of potholes. Crack filling prevents moisture intrusion into pavement cracks thereby restoring the surface to its nearly impervious condition.

 

Compressed air heat lance for cleaning cracksThe HDOT understands the importance of crack sealing.  They awarded a contract to Walker-Moody Asphalt Maintenance Ltd. (Walker-Moody) to repair cracks in Kunia Road, H-1 Freeway from Kapiolani interchange to H-1/H201 interchange, H-201 Freeway, and Halawa Heights Road.  The project was done using equipment and material supplied by HAPI Member SealMaster Hawaii.

 

The scope of work consisted of furnishing all labor and necessary equipment, materials and traffic control, to seal existing pavement cracks. This included crack sealing expansion joints, longitudinal and transverse cracks, joints between concrete and asphalt, and random cracks in both asphalt and concrete pavements.  The project started in June 2016 and was completed in April 2017.

 

Bobcat with router attachementSeveral pieces of equipment were used to complete the project.  A Bobcat with router attachment was used to route cracks between 3/8” to 3/4" wide.  The cracks were swept and cleaned with a compressed air heat lance immediately before sealing a crack.  The SealMaster Crack Pro 125 Gravity Flow Machine (see the featured video) was used to heat and distribute the hot crack sealer material.  Lastly, the SealMaster Crack Banding Machine was used to apply an even 3” band of crack filling material into the cracks. Using these various pieces in the right order, Walker-Moody was able to effectively crack seal the roadway in the most efficient manner.

 

SealMaster CrackMaster 6690 was the sealant product used.  It sets up quickly in both day and night conditions, allowing the roads to open to traffic (cars) within minutes behind the crews as they worked their way down the roadway. If the asphalt is still moving at the cracked area, a benefit of CrackMaster 6690 is that it can expand and contract with the movement of the asphalt maintaining a good seal.

 

The project was not without its challenges.  Road closures needed to be managed and coordinated.  Some roadways could only be worked on at night and others during the day.  Walker-Moody had to manage the logistics of swapping employee schedules and road closures between day and night work. 

 

Severely cracked lane completedFortunately, they had the expertise of their sub-contractor Safety Systems and Signs Hawaii (Safety Systems) to manage the road closures. Safety Systems made the whole process simple for Walker-Moody.  Walker-Moody told Safety System where the work was going to be and when it would be done, and Safety Systems took care of the rest.  Safety Systems always had a crew out with Walker-Moody and would close the road in front of the work and open the road as Walker-Moody progressed down the roadway. This minimized the inconvenience for the traveling public.

 

However, the biggest obstacle for Walker-Moody to overcome was the weather.  Cracks cannot be effectively sealed unless the crack are dry.  Rain can be hard to predict so Walker-Moody planned additional days for each work area to allow for ‘rain days.’  The additional days allowed them to reschedule work and still complete each area within the road closure timeframe.

 

It is anticipated that repairing these roadway cracks will allow the HDOT to defer the more expensive job of resurfacing the roadway for 3 to 5 years.

 
About SealMaster Hawaii (www.sealmasterhawaii.com)
 
SealMaster Hawaii LogoSealMaster Hawaii is a One-Stop-Source for pavement maintenance products and equipment. They also carry some concrete, roofing and sports products (such as track, basketball and tennis courts) under SportMaster. SealMaster Hawaii has products designed for the island conditions. They make asphalt maintenance products with local materials; Made in Hawaii, for Hawaii.  With everything under one roof, contractors and homeowners can save valuable time and money on the products, tools and equipment necessary to do the job right. They are staffed by professionals trained to provide the best possible customer service.
 
For more than 40 years, quality-driven contractors have relied on SealMaster for their pavement maintenance products and equipment needs. SealMaster is the most recognized name in pavement maintenance throughout the world.
 
About Safety Systems and Signs Hawaii, Inc. (www.ssshinc.com)
 
SSSH LogoSafety Systems and Signs Hawaii, Inc. started in 1973 on the island of Oahu supplying traffic control assistance to the State’s Department of Transportation. Since that time, the company has grown to include 4 separate divisions plus catalog and online sales. Products range from classic orange and white barricades to hi-tech gas monitoring equipment, fire retardant clothing and so much more. With inventory warehoused in their Kalihi facility they can fulfill most orders within 24 hours – if not sooner.
 
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Asphalt Pavement Guide Highlight   
   

Cracks that have been sealedPavement maintenance describes all the methods and techniques used to prolong pavement life by slowing its deterioration rate. The performance of a pavement is directly tied to the timing, type and quality of the maintenance it receives. Click here to learn about the various methods and techniques, including crack sealing.

 

 
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Asphalt Video of the Month  
   

CrackPro 125This month’s video is by SealMaster.  It provides information about their CrackPro 125 Heated Hose Machine that was used for the featured project.  The machine is an oil-jacketed melter/applicator for hot pour crack sealing materials. It runs on all diesel power and can be ready to apply within 1 hour.  Click here to learn about this piece of equipment.

 

 
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Asphalt FACT
 
   
Asphalt Fact 05Asphalt Fact #05: Pavement engineers have been producing long-lasting asphalt pavements since the 1960s. Research has shown that well-constructed and well-designed flexible pavements can perform for extended periods of time.  Click here to learn more about long lasting pavements.
 

 
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HAPI Calendar of Upcoming Events:         
(for additional information click on the event title)
 
 

✤ ASCE Hawaii Annual Golf Tournament, August 3, 2018;  Aiea, Hawaii


Other training opportunities!

✤ 1st International Conference on Stone Matrix Asphalt (SMA), November 5 to 7,  2018;  Atlanta, Georgia


NAPA FREE Webinars - click here for additional information and to sign-up: 
NAPA Webinars


Asphalt Institute (all FREE):


Asphalt Emulsion FREE Webinar Series Recordings

Pavement Preservation Treatments FREE Webinar Series Recordings

Advanced Pavement Preservation FREE Webinar Series Recordings

Tack Coat Best Practices FREE Webinar

Thin Lift Asphalt Overlays FREE Webinar


National Highways Institute: Full Depth Reclamation, or FDR, is a rehabilitation technique in which the full thickness of the asphalt pavement and a predetermined portion of the underlying materials (that is, the base, the subbase, and/or subgrade) is uniformly pulverized and blended to provide an upgraded, homogeneous material.





 
 
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