News

Asphalt Paving Article September 09, 2004
Look down on Illinois from the air and you might think the state has lots of asphalt roads. What you can’t see is that underlying the asphalt is a concrete base. The state has a historical belief in concrete pavement. Nearly all of the state’s highways were originally built with concrete. Over the...
Asphalt Paving Article September 09, 2004
Sunmount Corp. bought one of the first Ingersoll-Rand ABG pavers ever sold in the U.S. When company officials purchased the Titan 511 to lay untreated base, little did they know the German-made paver would assist them with several racetrack, runway and highway paving jobs in the years to come....
Asphalt Paving Article June 16, 2004
For states across the country, the use of recycled concrete aggregate (RCA) is cutting down on the amount of solid waste ending up in landfills and saving transportation agencies both time and money. A recent review of RCA use conducted by the Federal Highway Administration (FHWA) found that the...
Asphalt Article April 12, 2004
Hot-mix asphalt is a high-energy drink for Duininck Brothers Inc. The competitive paving market in Texas can knock anyone on its back. Duininck Brothers, headquartered in Roanoke, has been a steady survivor since 1983. Its one and only key to success seems as plain as the logic behind it: put...
Asphalt Paving Article February 17, 2004
In California, as elsewhere in the U.S. and overseas, aging pavement systems, together with increased traffic volumes that are considerably greater than those for which the systems were originally designed, have required new approaches to pavement design, rehabilitation and construction practices...
Asphalt Article February 17, 2004
When the schedule for Boston’s Central Artery/Tunnel (CA/T) project required asphalt paving operations during this past winter, the joint venture of Bechtel/Parsons Brinckerhoff (B/PB) prepared a cold-weather paving procedure that allowed the difficult work to proceed and helped ensure that the...
Asphalt Paving Article February 17, 2004
For more than a half-century, diesel-fuel screeds have been the market staple, laying millions of tons of asphalt mats in forms ranging from driveways to interstate highways. The fuel is used to fire the burners that preheat the screed bottom so contractors avoid asphalt dragging and lay a higher...
Asphalt Article October 23, 2003
Foamed asphalt is a "natural" for rural Ulster County, N.Y., where the local economy depends on unimpeded tourist traffic to Ulster's scenic Catskill Mountains north of New York City. This process--now gaining popularity across North America--lets Ulster County keep its roads open to local and...
Asphalt Article March 04, 2003
After 12 years of experience in this country, pavement engineers are concluding that stone matrix asphalt (SMA) is a strong surface for high-volume, heavy-duty roadways. SMA is a stone-on-stone, binder-rich surface mix that provides quality rutting and cracking resistance. The technology was...
Asphalt Article January 24, 2003
The way the feeder system is set up and operated has a major impact on a wide range of mat quality issues. Regardless of the mix type, the paving width or the paving depth, the feeder system must deliver material from the hopper to the auger chamber and across the screed in an uninterrupted,...
Asphalt Article January 21, 2003
Northstar Asphalt Inc. had a suggestion, but didn't quite have the experience to make it. Nobody in the state of Ohio did. When the Ohio Department of Transportation worked out designs for the expansion of a 2.3-mile stretch of I-77, it originally wanted a 131/4-in. asphalt pavement over an asphalt...
Asphalt Article January 21, 2003
The first two-year cycle of tests at the National Center for Asphalt Technology (NCAT) Test Track, Auburn, Ala., was completed recently. The testing of 46 different sections was conducted by subjecting the pavements to the equivalent of 10 to 12 years of traffic loading in two years. Heavier-than-...
Asphalt Paving Article August 19, 2002
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Asphalt Article August 19, 2002
At every stage in handling aggregate and asphalt, there is a chance for material segregation to occur. At the quarry, improper stockpiling techniques and loader handling can compromise spec product gradations. At the hot-mix asphalt plant, again how the aggregate is stored and the use of improperly...
Asphalt Article April 18, 2002
Calling it “a big project” would be an understatement—because it is bigger than that, much bigger. Try this on for size: The Big I Reconstruction Project in Albuquerque, N.M., involves more than 2 million cu yd of dirt, 610,000 tons of hot-mix asphalt (HMA) and 165,000 cu yd of concrete. And all of...
Asphalt Article April 18, 2002
It’s the kind of road that wouldn’t even make a squirrel stop dead in its tracks. Route P46 in Ringgold County, Iowa, isn’t a haven for fast, confusing traffic. The road carries an average daily traffic count of 360 vehicles. The area tells the story of a farmer’s life. Hard work produces quality...
Asphalt Article June 11, 2001
Expanded asphalt (also called foamed asphalt base stabilization) base stabilization was introduced to the South this past year Expanded asphalt (also called foamed asphalt base stabilization) base stabilization was introduced to the South this past year as an economical alternative to conventional...
Asphalt Article December 28, 2000
The faster you play the drums, the smoother the roll sounds. The faster you work the drums, the smoother the roll feels. It’s the new challenge of the compaction industry: making rollers vibrate fast enough to keep up with the Superpave technology, which, in turn, will produce a surface without...
Asphalt Article December 28, 2000
I have one thing in common with my car. We both like smooth roads. The car likes it for purely mechanical reasons—potholes and ruts are just not good for its suspension. I like them because they are a pleasure on which to drive. Driving can be stressful enough without having to dodge potholes and...
Asphalt Article December 28, 2000
The Superpave system is increasingly seen around the country as the mix design system that will take roads into the 21st century. But to the engineering students at the nation’s universities who will be designing and maintaining those future roads, it has remained largely an unknown. Indiana is...
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