Pennsylvania's State Transportation Innovation Council has several success stories to brag about, including deployment of warm-mix asphalt, geosynthetic reinforced soil integrated bridge systems and the Safety EdgeSM.
Download Asphalt 7 For Nokia N8
Pennsylvania's State Transportation Innovation Council has several success stories to brag about, including deployment of warm-mix asphalt, geosynthetic reinforced soil integrated bridge systems and the Safety EdgeSM.
Download Asphalt 7 For Nokia N8
The Rhode Island Department of Transportation worked with the Federal Highway Administration to produce a construction specification for intelligent compaction for asphalt paving. The specification will be field tested as a special provision in a few contracts before it's finalized as a standard specification. The first test is on a $1.4 million mill and overlay project covering about 2.3 miles of roads at five locations around the state: Coventry, East Providence, Narragansett, North Kingstown and West Greenwich.
Highway professionals learned about intelligent compaction at a Tennessee Department of Transportation showcase in Lincoln County. The agency is using the technology on several asphalt pavement resurfacing projects to improve pavement stiffness and cut highway repair costs. The event featured a workshop and construction site visit to see intelligent compaction rollers in action. The technology enhances project quality control by increasing uniformity and accelerates construction by providing real-time feedback on compaction.
Franklin Township in Wright County experimented with a relatively inexpensive asphalt surface treatment, known as Otta seal, as a way to reduce maintenance costs and improve ride quality on its high-traffic gravel roads with a crushed granite base.
Lake County developed potential reclaimed asphalt pavement (RAP) mixes containing imported, high-quality aggregates that could be tested in a low-volume pavement project. These mixes allowed the county to reduce costs by using less new asphalt while also using surplus RAP material available from local surface renewal projects. The addition of high-quality aggregates also provided a more durable bituminous surface than current mixes.
Blue Earth County completed a gravel road stabilization project on a section of County State Aid Highway 48 using a blend of recycled asphalt shingles and recycled asphalt pavement rather than the typical stabilizing binder used in past projects. The county plans to observe the performance of the shingle mix for one to two years.
The City of Hutchinson used Replay, an agricultural oil seal and preservation agent that contains no petroleum, to seal two sections of asphalt pavement. After the application, visual inspections indicated that the top layer of asphalt had been sealed. Unlike other sealants, Replay did not become sticky in hot weather, making it ideal for areas experiencing high volumes of pedestrian traffic during the summer.
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