Soil stabilization – The economical solution
It wasn't what Stier was thinking just a few days before when two tractor-towed soil stabilizers WS 250 were delivered to the BUGA 2019 site in Heilbronn. "I'd had no experience with this type of application before and was somewhat in awe of the new machines." However, soil stabilization in particular is a key issues at the site, which is located right beside the river Neckar. As the Senior Site Manager, Philip Kircher of Wolff & Müller, a well-known German family-run construction and civil engineering company, explains: "Even before the work began in August 2014, it was clear that we needed to move huge quantities of earth on this vast 40-ha site. When you include interim storage, it amounts to an estimated one million cubic meters," says Kircher. "Replacing soil on this scale is totally uneconomical, so stabilizing it was our only option." But the process is both economical and eco-friendly. Requiring fewer machines and truck journeys as well as shorter construction times, it allows contractors to make considerable savings on resources. Furthermore, CO2 emissions are greatly reduced as well. "We obtained all the machines we needed for the job from the Wirtgen Group," adds Kircher.
While the terrain still needs to be excavated in some areas of the future exhibition grounds, elsewhere preparations for planting are already underway. "When you look at the site as a whole, we could have opted for a self-propelled soil stabilizer instead" says Wolff & Müller Branch Manager Ingolf Klärle. Indeed, the comprehensive Wirtgen product range provides the right solution for all applications. With the compact WR 200i, the WR 240i all-rounder and the WR 250 powerhouse, daily rates of between 1,000 and 12,000 m² can be achieved, depending on the condition of the ground. The high performance WR series is also superb in cold recycling applications for rehabilitating roadways economically.