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

  • Looking ahead for Power Curbers
    September 26, 2023
    Power Curbers president Stephen Bullock discussed business trends with Mike Woof
    Read More
  • Cat paves the way in Portugal
    June 22, 2012
    Caterpillar pavers were used recently to help improve drainage on a vital road into a popular tourist destination in Portugal. The Avenida Marginal is the main road access into Cascais, a village with historic hotels, winding roads and stunning views of the Atlantic Ocean attracting thousands of holidaymakers each year. However, the highway had been suffering from poor draining resulting in rivulets being formed in heavy rain, making travelling hazardous for cars and pedestrians alike.
    Read More
  • GPS guidance delivers accurate machine control
    July 12, 2012
    GPS systems for machine control can make massive reductions in operating costs for contractors. Using GPS systems for machine control can make massive reductions in operating costs for contractors and the pace of technology improvements from manufacturers has been rapid. This market segment is dominated by Leica Geosystems, Trimble and Topcon, all of which introduced an array of new products earlier this year. Topcon's dozer control system first seen in public at the Intermat show in Paris, offers notable c
    Read More
  • Warm mix use in the US and Czech Republic is strong
    May 20, 2014
    The Czech Republic has seen its first ever use of warm mix produced using additive Evotherm - and a survey carried out in the US shows that warm mix is still on the rise there - Kristina Smith reports The troubled Blanka Tunnel in Prague will see the Czech Republic’s first ever use of Evotherm warm mix asphalt (WMA) technology. The 6km tunnel is the longest urban motorway tunnel in Europe and will take the north-west section of the city ring road below ground. Designed as dual carriageway throughout w
    Read More

Highlighted Content