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

  • Rainforest road repair and rehabilitation with stabilisation
    May 23, 2014
    A limited amount of aggregate and resources, including fuel, in the Riau province of Indonesia can challenge roadbuilders, but Indonesian contractor PT Harap Panjang overcame the obstacles on a recent project. The province rests in a tropical rainforest. The 2600mm of annual rainfall take a toll on the area’s roads, particularly those developed by oil company Chevron Pacific Indonesia. The remote roads were built to service Chevron operations, crucial to the economies of the city, region and country. The r
    Read More
  • Effective joint heating
    October 3, 2014
    Heat Design Equipment (HDE) has introduced updated versions of two of its successful products, the HDE 750 2TMT asphalt maintenance trailer and the HDE JMH 500-PA asphalt joint heater. The asphalt maintenance trailer heats up and softens an area of asphalt, allowing it to be reworked and repaired.
    Read More
  • Trimble’s milling technology wins at Misano World Circuit
    April 4, 2016
    As Europe’s motorcycle racing season gets underway this year, Trimble employees will be avidly following the competitions at one venue in particular – Italy’s Misano World Circuit Marco Simoncelli. A Trimble solution recently helped to efficiently reconstruct the racing surface at Misano, about 14km south-east of the Italian city of Rimini on the eastern Adriatic coast. Since 1991, the racetrack has hosted the World Superbike Championship and, since 2007, the San Marino and Rimini's Coast motorcycle Gran
    Read More
  • Versatile paving
    February 28, 2012
    Caterpillar Phoenix-Zeppelin has delivered an AP555E paver to contractor USK Mnichovo Hradišt in the Czech Republic. The machine weighs in at 16tonnes and paves at up to 25m/min and is now working at a construction site near Brandýs nad Labem in the Central Bohemian Region. This versatile machine is able to pave using all standard types of asphalt mixes both in and outside urban areas. The Cat AP555E is also suited for the construction of major trunk roads or highways, while the fitting of a Trimble levelli
    Read More

Highlighted Content