Analyse und Prognose der mineralischen Roh- und Baustoffströme in Bayern

Bavaria is well stocked in mineral raw materials such as gravel, sand, natural stones, loam and clay. As such, exploitation and processing of raw materials play an important economical role in Bavaria. At the same time, exploitation of raw materials can have a negative environmental impact resulting from resource and land consumption and from refilling of pits and quarries with residual building materials. Groundwater resources can be endangered in the course of exploitation of mineral raw materials as well. In order to ensure an economically and environmental sound, local supply of mineral raw materials in the future, a differentiated view of raw and building material flows and an evaluation of building material substitution and recycling possibilities are necessary. In a preliminary investigation, mineral raw and building material flows in Bavaria were analyzed and a prognosis for the year 2010 was developed. Due to the expected increase of the Bavarian population and in future building activities, the prognosis resulted in an increased need for mineral building materials up to the year 2010. However, these analyses showed that the available data and information regarding raw material production and building material recycling contain uncertainties. Further research is necessary in order to verify the prognosis and to more accurately compare the expected development in Bavaria to the overall German situation.