Efficient concrete overlays

Concrete overlays have a long history and proven success in the state of Iowa. Mitchell and Worth counties in north central Iowa have led the way. In the past three years, they have put down approximately 241km of 102mm concrete overlay. Concrete Foundations Inc. (CFI), based out of Hiawatha, Iowa, has slipformed almost 80km of the counties' overlays, including 45km this paving season near the town of Osage. CFI has slipformed most of the overlays with its GOMACO two-track GP-2600 paver. This season, the co
February 15, 2012 Read time: 2 mins
Efficient concrete overlays are being achieved with the use of stringless controls

Concrete overlays have a long history and proven success in the state of Iowa. Mitchell and Worth counties in north central Iowa have led the way. In the past three years, they have put down approximately 241km of 102mm concrete overlay.

Concrete Foundations Inc. (CFI), based out of Hiawatha, Iowa, has slipformed almost 80km of the counties' overlays, including 45km this paving season near the town of Osage.

CFI has slipformed most of the overlays with its 218 Gomaco two-track GP-2600 paver. This season, the company added the Leica Geosystems stringless system and a new GOMACO four-track GHP-2800 paver to the inventory. Both were put to work on the project near Osage.

The new unbonded concrete overlay is 6.7m wide, and the material is placed directly on the existing asphalt surface of the roadway. The surface only has to be swept clean before the mix is dumped on it and concrete slump averages around 13-25mm.

The firm has seen increased production with fewer people needed for stringline maintenance and setup. Five site personnel who normally worked with the stringline are now used elsewhere during the paving process. The lack of stringline also allows them to focus more on quality and production rather than stringline maintenance.

The GOMACO GHP-2800 is pulling burlap for a burlap drag finish behind the paver. Finishers work behind the paver with bull floats before a texture/cure machine applies a longitudinal tine and white spray cure.
Concrete milling, paving & compaction

For more information on companies in this article

Related Content

  • Technology helps earth moving and paving
    August 18, 2014
    Located in Meeker, Colorado and serving the area for air transportation is Meeker Airport, a C-II general aviation airport. The FAA designation of C-II means the airport can accommodate aircraft with wingspan of less than 24m. Runway 3-21 at the Rio Blanco county-owned Meeker Airport had reached a point of wear and deterioration that required full reconstruction and upgrades to remain compliant with the FAA’s C-II requirements.
    Read More
  • G&Z launching new concrete placer
    March 3, 2015
    New material placer being introduced by G&Z – Mike Woof writes. Guntert & Zimmerman is now lifting the wraps from its new MP550 material placer, having announced last year that design work was underway. This machine is designed to boost throughput and overall productivity on site, while being versatile, easy to maintain and service and offering low running costs. According to the firm, the MP550 is the most versatile material placer on the market as it can handle a wide variety of concrete slumps as well as
    Read More
  • G&Z launching new concrete placer
    March 4, 2015
    New material placer being introduced by G&Z – Mike Woof writes. Guntert & Zimmerman is now lifting the wraps from its new MP550 material placer, having announced last year that design work was underway. This machine is designed to boost throughput and overall productivity on site, while being versatile, easy to maintain and service and offering low running costs. According to the firm, the MP550 is the most versatile material placer on the market as it can handle a wide variety of concrete slumps as well as
    Read More
  • New compact slipformer widens G&Z range
    March 17, 2016
    A new and more compact slipform paver is being introduced by Guntert & Zimmerman, widening the firm’s range of models. The company has been known in the past for its large slipform pavers used in road and airport runway jobs but in recent years has developed smaller and more compact units. The S400 shares many of its features with the existing S600, which was previously the most compact model in the line-up. The firm’s German representative, Peter Hedke said, “It’s the smallest machine we’ve ever built.”
    Read More

Highlighted Content