"This was the first SMA project built in the Oklahoma and the first official Perpetual Pavement, but the state has been building full-depth HMAs for a long time and with great success," Lemon says.
The Oklahoma Asphalt Pavement Association recognized the quality of construction in 2006 by awarding Haskell Lemon Construction top honors in the Full Depth category. The pavement construction was judge on its longitudinal and transverse joint construction, as well as its ride smoothness quality. Seven full-depth HMA projects were submitted for the competition.
The National Asphalt Pavement Association also recognized the project by awarding Haskell Lemon Construction a 2006 NAPA Quality in Construction Award during the association's 52nd Annual Meeting in San Francisco.
Quality Control/Quality Assurance (QC/QA) for the project was directed by ODOT, with Haskell Lemon providing verification. Samples of mix produced at the contractor's plant were tested in 4,000-ton lots and 1,000-ton sub lots.
Jay Lemon, vice president of construction for Haskell Lemon, says on projects like Highway 152 the DOT does its own QA testing and requires contractors with certified personnel to perform additional redundant testing to verify results.
"Samples are pulled from the plant for extraction, gradation, air voids and Rice specific testing," Lemon says. "During the (Hwy. 152) project, ODOT would pull a sample for testing once every four samples we pulled in order to validate the results we provided. ODOT specifies the range of test lots we need to conduct and assigns disincentives to gradation, air voids, QC content and road density factors. We executed the project with minimal deviations to the required specifications outlined in the contract."
"We're able to meet the specifications and deliver the quality expected because we invest in the technology and people required to execute this type of project," the senior Lemon notes. "We specialize in surfacing and 60 percent of the surfacing work we do is with asphalt, so it's important for us to make the investments we need to make to be a competitive leader in the market. And it's the investments we continue to make that allow us to deliver a project like Highway 152, which is a great value to the taxpayers of Oklahoma and one that will serve them well for many decades to come."
And when you consider Oklahoma's other long-lasting full-depth Perpetual Pavements, the newest addition should do well in matching the performance characteristics of its veteran counterparts.