The WR model series in a variety of applications Successful operations in soil stabilization and cold recycling

Powerful soil stabilization produces homogeneous subgrade Milling and mixing rotor When operating as a soil stabilizer, the WR uses its powerful milling and mixing rotor to mix pre-spread binding agents, such as lime or cement, into existing soil of insufcient bearing capacity at a working depth of up to 56 cm, thus converting it into a construction material of high quality in an in-situ process. Following treatment, the soil-binder mixture is levelled by graders and then compacted by rollers. During the operation, the WR effortlessly pushes a preceding water tanker truck which delivers the required...

High-quality cold recycling for stable base layers Injected foamed bitumen Injected water-cement slurry The WR is used as a cold recycler in projects requiring the structural rehabilitation of trafc surfaces. It is equipped with a powerful milling and mixing rotor which mills and granulates asphalt pavements, injecting binding agents and water in precisely metered quantities and mixing them with the pavement material to be recycled. After processing, the homogeneous construction material is levelled precisely using graders and compacted by means of rollers. The new base layers are distinctive...

Subgrades of the highest quality for high-speed railway lines As part of the new construction of an ICE line between Ebensfeld and Erfurt (Germany), the surplus soil excavated during the production of line cuts and tunnels is transported to a nearby stockpile where it is stabilized by adding binders and then used to backll bridge approaches, sewer trenches or similar along the railway line. Highest quality standards have been agreed: In order to achieve a highly homogeneous mixing quality (particle size < 25 mm), the client species thorough mixing in three machine passes. In the rst step, the...

The high-quality end product is used to backll trenches or similar along the high-speed railway line. Final homogenization produces material of a ne-grained quality. In addition, restricted space conditions in the stockpile yard require frequent repositioning and reverse travels of the WR 240, as well as skilful handling of the machine by the operator. greatly increase operator comfort. The rear axle features an extra large steering angle, allowing swift turning manoeuvres at the end of the short passages and in restricted space conditions. These advantages are reected in improved operator performance....

Efcient production of stable base layers on the A7 motorway The powerful milling and mixing rotor creates an excellent, homogenous mix of high quality. As forecasts anticipate high trafc volumes with a correspondingly high percentage of heavy trafc, rehabilitation of the A7 motorway near Langenau (Germany) calls for both a subgrade and upper pavement structure of superior bearing capacity. In order to meet these requirements, the WR 240 is commissioned to produce a hydraulically bound base layer of high quality. In a rst step, water and road binder (15 kg / m²) are distributed on the subgrade...

Complex operations during motorway construction Working in the extension of an 8-km long section of the A3 motorway close to Weibersbrunn (Germany), the WR 200 completes a whole bundle of complex operations. A total mass of 1,500,000 m³ of earth and rock needs to be moved and then placed again in this largescale project. 500,000 m³ of the material to be moved consists of sandstone which is mostly granulated by the Wirtgen machine in layers and without any additives to produce material suitable for compaction. 750,000 m³ of the entire earthwork volume is subjected to various processing operations...

Construction of a dam for effective ood control In the event of oods, a dam of up to 6 m in height will in future divert inowing water into a landscaped detention basin near Tübingen (Germany) in order to better protect the town from ooding. For this technically very demanding construction process, the contractor in charge relies on the Wirtgen WR 240 recycler. Construction of the dam core by means of soil improvement is effected by backlling soil at a layer thickness of 50 cm and pre-spreading binder (50 % lime / 50 % cement), which is then homogeneously mixed in by the WR 240 while adding water...

High productivity – even when things get tight ous obstacles an absolute must. The WR 240 completes this assignment in next to no time. The operator always has a perfect view of both the milling edge and various obstacles like manhole covers. The WR 240 carries out a soil stabilizing job on a school playground in the Bavarian village of Frensdorf (Germany). Following pre-spreading of 37 kg / m² of binder, totalling 50 tonnes, on the 1,350 m² large area, the high-powered recycler homogeneously mixes in the lime-cement mixture at a working depth of 30 cm. Extremely restricted space conditions,...

Extensive soil stabilization in an industrial estate Oversteering of the rear axle grants exceptional manoeuvrability, saving time at the end of each cut and thus increasing productivity. The construction of a large industrial estate in the vicinity of Ramstein (Germany) calls for the WR 250 to stabilize around 350,000 m² of soil. The WR 250 is the most powerful machine in the WR model series and has been specically designed for stabilizing, on a large scale, the type of material that requires mixing in this project. Following pre-spreading of 15 kg / m² of cement, the high-performance machine...

Soil stabilization with cement for extremely resilient surfaces Stabilizing an area of 125,000 m² is on the WR 240’s schedule as part of the construction of a container terminal in Heilbronn (Germany). Heavy containers and loading vehicles require the subgrade support to be exceptionally resistant to extremely high point loads. The WR 240 creates a subgrade support of high quality that will be able to cope with future peak loads. Project details Total area: Spreading quantity of cement: Working width: Working depth: Advance rate: The WR 240 mixes the existing gravel and pre-spread cement homogeneously...