Roads

Welcome to the Roads Channel, a special feature that provides the user an in-depth look at the road industry. This section offers several areas to explore: product spotlights, article archives, related case studies, related video and product/supplier contact list.

Article December 28, 2000
Roller-compacted concrete (RCC) pavements were first used in Canada during the mid-1970s when dry land log sorting became mandatory for the forest industries of British Columbia. RCC is a durable paving material that carries heavy loads, developed as a fast, economical construction method for...
Article December 28, 2000
When it comes to soil compaction testing, Memphis Light Gas and Water (MLG&W) found a solution in the real-time feedback providWhen it comes to soil compaction testing, Memphis Light Gas and Water (MLG&W) found a solution in the real-time feedback provided by the Soil Compaction Supervisor...
Article December 28, 2000
This is the '90s, and ways of doing business have changed with the times, even for those in the asphalt-paving industry. While most paving projects are "kicked off" with the milling of existing pavement or surveying for a new road, the I&shyp;26 and Piney Grove Road Project in South Carolina...
Article December 28, 2000
A few years ago, we complained about the premature cracking or rutting of our asphalt roadways. Those endless miles of bleached asphaltic-concrete interstates, with the furrows called ruts that never seemed to match the width of your wheel base. The longitudinal channels that swayed your car left...
Article December 28, 2000
Using only148 traffic lane-restriction days, a joint-venture contractor reconstructed 2.64 miles of six-lane I-65 with14-in.-thick concrete pavement in downtown Indianapolis. The team that built this high-quality concrete roadwork, with exceptional construction speed, was awarded the1997 National...
Article December 28, 2000
When the new FedEx hub at Alliance Airport in Fort Worth, Texas, opens in late 1997, the clearinghouse for packages shipped between the West Coast and the southwestern U.S. will include more than 300,000 sq yd of reinforced concrete pavement underlain by a cement-treated base and cement-treated...
Article December 28, 2000
Hot-mix asphalt (HMA) pavements are essential to America’s transportation system. The performance of HMA must be maintained at its highest possible level to ensure the safety and mobility of the motorist. Getting optimum performance from the pavement minimizes the frequency of disruption to the...
Article December 28, 2000
Brigham Young made the streets in Salt Lake City big enough so an ox cart could turn around with little difficulty. At the end of this month, Doug Brannon’s "animal" will change direction, but it hasn’t been all that easy. Brannon is one of the paving leaders for Wasatch Constructors, a joint...
Article December 28, 2000
Many industries utilize media-bed filtration. This use may take the form of ion exchange for water softening/demineralization, sand filtration, activated carbon, and other fluid treatment processes. However, whether the application is in a water utility, a power utility, pulp and paper, steel, or...
Article December 28, 2000
In the HMA facility, the RAP must be dried and heated prior to mixing into the HMA. Heat transfer to the RAP can be accomplished either conductively or convectively. Conductive heat transfer is used in almost all batch facility applications and when RAP is introduced in counterflow dryers while...
Article December 28, 2000
The City of Santa Cruz, Bolivia, and the surrounding areas has a population of 1.6 million. Santa Cruz is designed in eight concentric rings surrounding the city center. As the city has grown, development has moved out through these ringed areas and beyond. A municipal sewage treatment plant...
Article December 28, 2000
Concrete pavements, long considered the prime material for high-volume, high-load-bearing applications, are being specified increasingly for applications where cost is a key consideration. In fact, the low life-cycle costs are making concrete pavements good investments for a growing number of...
Article December 28, 2000
The Greek philosopher, Aristotle, was never a part of a hot-mix asphalt (HMA) paving crew and never worked at a hot-mix plant, The Greek philosopher, Aristotle, was never a part of a hot-mix asphalt (HMA) paving crew and never worked at a hot-mix plant, but his teachings are applicable to the field...
Article December 28, 2000
For cities to survive, while protecting environmentally-sensitive lands such as wetlands and aquifer recharge areas, it is essential that suburban sprawl be curtailed. The costs, in economic terms, in lost time, in excess energy consumption, and in depletion of natural resources, are well...
Article December 28, 2000
Recycling of existing asphalt pavements for pavement rehabilitation or reconstruction has the following advantages: reduced costs of construction; conservation of asphalt binder and aggregate; preservation of the existing pavement geometrics; preservation of the environment; and conservation of...
Article December 28, 2000
The use of the Superpave design process for hot-mix asphalt (HMA) mixtures is growing across the UThe use of the Superpave design process for hot-mix asphalt (HMA) mixtures is growing across the U.S. In some areas of the country contractors have experienced problems, but there have been many...
Article December 28, 2000
Olympic athletes strive and train hard for the ultimate prize-Olympic gold. And, while the gold is being won and records broken, the spectators, who drive to the Olympic venues scattered throughout the city, will probably take for granted the award winning efforts of the Georgia DOT (GDOT), which...
Article December 28, 2000
Asphalt is a unique product. Although it represents a small yield, only 3%, of the U.S. refinery system, it is not a simple product to understand. No other petroleum product is affected by so many variables. The resultant supply/demand fundamentals in turn affect the prices of asphalt that...
Article December 28, 2000
Rutting of hot-mix asphalt (HMA) pavements at intersections is a problem. Rutting takes place at intersections because the HMA exhibits lower stiffness under slow moving or standing loads compared to fast moving loads. The problem is aggravated in hot weather because the stiffness of HMA is further...
Article December 28, 2000
Earlier this year, the Washington State Department of Transportation (WSDOT) started work on two large roadway projects in metropolitan King County, southeast of downtown Seattle. These involved the addition of a new driver surveillance and information system on I&shyp;405 and the installation...
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