Article: Technology key to SMA placement.(PAVING INNOVATIONS)

Along with advanced technological change come alterations in the implements required to take maximum advantage of the new technology. An example of this is North America's growing use of performance-grade pavements, especially stone matrix asphalt (SMA). This has also stirred a renewed interest in European-style screeds. A primary example of one of these is the Ingersoll-Rand ABG (Allgemeine Baumaschinen Gesellschaft mbH) high-density, double-tamping bar design.

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IR-ABG markets four versions of its high-density Duotamp vibratory screeds. The fixed-width VDT 120 paves 9-feet, 10-inches wide, and the VDT 121 paves 8-feet, 2-inches ...

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