Airport Business

APR 2017

The airport professional's source for airport industry news, articles, events, and careers.

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PROJECT MANAGEMENT 30 airportbusiness April 2017 tons, leaving the top lift of the runway with very few transverse joints. The company used infrared cameras to shoot the pavement right after it's placed to confirm that there are no temperature variations – cold spots in the mat. Minimal color variation in the infrared image indicates minimal temperature difference in the mix, a result of good remixing. "The Shuttle Buggy uses a triple auger mix - ing technology which equalizes temperatures and evenly mixes large and small particles," Gilliland said. "The asphalt spec for the job, talks about the HMA temperature requirement and the thermal segregation penalty and also the requirement of using a MTV on the job." It is interesting to see how the ADOT&PF; describes the use of MTVs for its YAK – Airport Runway Pavement Rehabilitation project: 401-4.15 MATERIAL TRANSFER DE V ICE / V EH IC L E (M T D/ V ). Direct transfer of asphalt con- crete pavement from the hauling equipment to the paving machine will not be allowed during pav- ing of the top layer. A self-pro- pelled Material Transfer Vehicle equipped with remixing auger(s), (e.g. Roadtec Shuttle Buggy) shall be used to deliver the asphalt con- crete pavement from the hauling equipment to the lead paver. The trailing paver shall receive hot mix asphalt from a separate Material Transfer Vehicle, or a Material Transfer Device such as a wind- row pick-up machine. Asphalt concrete pavement placed in irreg- ularly shaped and/or minor areas, such as "elephant ear" tapers, are excluded from this requirement. The MTD/V shall distribute the asphalt concrete pavement on the prepared surface without segrega- tion to obtain a smooth mixture of uniform temperature and texture throughout the finished surface. With the project completed, Gilliland said, "Even with the numerous rain delays, the chal- lenging logistics getting equipment and sup- plies, we're proud that we're completing the largest asphalt paving project in the state this year and that we earned quality bonuses for the composition and density of our finished paved surface. This is definitely a unique project that all of us working on will remember for years to come."

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