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In building streets and roads in Germany, recycled building material or secondary industrial products have been in use for a considerable period of time. By the same token, North Rhine-Westphalia is one of the leaders in the area of sustainable road-building, where around 4 million tonnes of secondary building material were produced – primarily in the construction of road embankments – in the years 2004 to 2014.
Road-building measures often involve the use of primary mineral building material such as gravel, sand and crushed stone. Reserves of these raw materials are becoming ever scarcer, however. Against this background, substitute building material made of recycled mineral substances offer an alternative that is just as safe and economically interesting.
One marked example of climate- and resource-saving use of premium-grade mineral residue material in road-building is the new bypass road around Münster-Wolbeck in Westphalia. The approximately six-kilometre-long stretch of road with its seven new bridges will take the traffic pressure off the historical city centre in a sustainable manner. Moreover, it is of tremendous infrastructural importance to the region.
The bypass road was built upon the commission of Straßen.NRW, Landesbetrieb Straßenbau Nordrhein-Westfalen, which is in charge of all motorways, federal trunk roads and regional highways in North Rhine-Westphalia. At the same time, Straßen.NRW designed the tender in such a manner that substitute building material could be used wherever this was environmentally possible and warranted.
A short film about how granova® is produced (German only)
As a result of the route design, with road embankments of up to 6 metres high, major quantities of material had to be applied throughout the entire building period. This included around 100,000 tonnes of granova®, which was used as an embankment material. This substitute building material, which is quality-assured, has been supplied, installed and compacted in the same familiar way as primary building materials. MAV Mineralstoff-Aufbereitung und Verwertung Lünen GmbH was in charge of delivering the material in the proper form and in due time for the project. The company is one of the subsidiaries and affiliated companies of REMEX which are responsible for the distribution and production of quality-assured granova® substitute building material.
REMEX substitute building material granova® is predominantly used as aggregate in road-building and earthworks
The manufacture and marketing of substitute mineral building material has been one of the core competencies of the REMEX Group for years. Its specialists not only recycle bottom ash from household waste incineration plants to recover valuable metals – they also apply their experience and know-how in order to produce the quality-assured substitute building material granova® from the mineral part.
REMEX supports customers in the use of substitute building material as well. For example, when planners, public administrations and building companies address technical codes and environmental requirements. This is often a time-consuming process, as guidelines and regulations in the area of civil engineering and road-building projects in Germany may differ among the Länder.
Among other things, REMEX has developed the practical granova® cube in this connection. It can be used to simply and quickly determine whether the use of household waste incineration ash is possible in a building project. After comparing environmental provisions and regulations applying to technical building aspects, the cube shows the respective areas of application. Background information on the application possibilities shown on the cube is explained in detail in an accompanying manual.