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Soil stabilisation with the BOMAG RS 300 tractor-towed stabilizer.

In the Belgian city of Ostend, soil stabilisation with lime was required for 4,000 square metres of future industrial space. The Verhelst Aannemingen company was commissioned to carry out the work. The Ostend-based family business used the BOMAG RS 300 tractor-towed stabilizer for the first time.

Plant retrofit reducing odours

A retrofit to an Ammann asphalt-mixing plant is helping to lower odour emissions and is proving popular with those in the vicinity of the facility. An Ammann RAH100 dryer has replaced the existing component on a decades-old plant owned by Asfalt Productie Limburg (APL) in Heusden-Zolder, Belgium. The retrofit is of note as this is the first RAH100 to be employed in the country.

Recycling the Italian way: FAE, Simex, CAMS

FAE says that its dedicated soil stabiliser is now well-accepted and can work to depths down to 500mm. Because the unit is towed by large tractors, it is suitable for smaller and more compact sites where self-powered stabilisers would be difficult to use.

As the units are towed by large tractors, the company also distributes the machines through a number of tractor dealers, according to Giorgio Carera, chief executive of FAE in North America. “That’s the kind of distribution we use.”

Vision Zero for the Balkans: IRF road safety conference

A landmark regional road safety conference convened by the International Road Federation (IRF) and the Bulgarian Branch Association Road Safety (BBARS) on June 1-2 2022 concluded with renewed calls for cross-border collaboration, institutional capacity strengthening, and investments in life-saving innovations to tackle the road traffic injury crisis that is responsible for 6,500 deaths annually in the region.

Concrete paving success with Power Curbers

A concrete paving contractor in Florida reports success in a range of projects. Brevard Concrete Paving started small, with one truck and trailer, and the firm’s initial projects were jobs such as the installation of residential kerbs, pedestrian walkways and driveways. Soon, the firm had branched out to a wide range of duties such as paving filling station areas and work for the Florida Department of Transportation.

Efficient continuous asphalt production

The TSX models have been developed to meet the need for an increase in recycling of materials such as bitumen and aggregates, as well as the reduction in the quantities of CO2 emissions linked to production and transport logistics of these raw materials. The TSX technology also benefits from a new process called DUOTHERM. This combines thermal exchanges between RAP and slightly overheated aggregates and thermal exchanges between RAP and moderate-temperature gases that have already exchanged with aggregates beforehand. Using this technology helps to reduce emissions into the atmosphere, below statutory regulations.

The TSX technology ensures a high-quality mix as it features a single dryer drum composed of three distinct zones, associated with a twin-shaft mixer as a standard. The first is the combustion zone, where the burner’s flame expends and generates hot gases to heat-up and dry materials. In the second zone, hot gases from the first zone exchange heat with the aggregates, drying. This zone also acts as a thermal screen to avoid any flame radiation in the third zone. The third zone meanwhile is where the RAP is introduced by the recycling ring but the material is protected from a direct flame by the second zone. Drying of the RAP occurs in the third zone due to the DUOTHERM process.

During this operation, RAP binder migrates homogeneously onto the aggregates. At the drum outlet, this homogeneous mix is conveyed to the twin-shaft mixer where it is mixed with imported binder and potential rejuvenator. Meanwhile, the long mixing time ensures full binder remobilisation.