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

  • Power Curbers ramps up Florida projects
    September 5, 2022
    A Florida company is using Power Curbers machines for major runway work in the US state.
    Read More
  • Interest grows in Kaugummiasphalt cold mix from Macismo
    November 25, 2016
    Asphalt supplier BPH says Czech highway officials have been meeting with autobahn managers from Germany’s Leipzig region to discuss cold path repair methods on concrete surfaces. BPH, founded in 2013 in Königsbrück near Dresden in the states of Saxony, produces and sells Kaugummiasphalt and Macphalt, both products based on the Macfix Technology from Macismo.
    Read More
  • Warm asphalt is a hot topic
    June 12, 2012
    Lower temperature mixes – a key advance in bitumen technology - Kristina Smith reports Warm and cold mix asphalts were not on the original agenda for this year’s Eurasphalt & Eurobitume Congress, being held in Istanbul in June. But when the organisers took a look through the papers submitted for their sustainability-themed event, they realised that this is one of the industry’s hottest topics. “We hadn’t quite anticipated the high level of research in this area,” says E&E’s technical programme committee c
    Read More
  • Cold winters ravage roads requiring repairs
    January 7, 2015
    Detroit is one of the three worst cities in the US for poor weather, along with Chicago and Toledo For Metro Detroit the winter of 2013-14 was the second snowiest season on record, bested only by the winter of 1880-1881. This had a terrible effect on the city’s roads and in the suburb of Southfield, officials assessed the poor state of the asphalt and concrete streets and realised the conventional patch and fill programme would not be sufficient.Instead the contract was modified to cover mill and resurfacin
    Read More

Highlighted Content