TY - CONF A1 - Weimann, Karin A1 - Adam, Christian A2 - Martins, I. M. A2 - Ulsen, C. A2 - Villagran, Y. T1 - Advantages of recycling gypsum plasterboards T2 - Progress of Recycling in the Built Environment N2 - Advantages of recycling gypsum plaster boards During the last decades the material composition of buildings has become increasingly diverse. However, largely sorted material flows are needed for generating high quality secondary building materials. The use of secondary building materials can meet the requirements of sustainability in several ways: the extended time availability of primary raw materials and, thereby, the preservation of natural resources as well as the conservation of landfill sites. Recycling of gypsum (calcium sulfate) can be a good example for the environmental benefits of closed-loop recycling. The content of sulfates in other secondary building materials, in particular in recycled concrete aggregates, should be minimized for quality reasons. In contrast, separated gypsum can also be used in gypsum production if the high quality requirements for the recycled gypsum are met. Since almost all processing steps in the recycling process are associated with environmental impacts, an environmental evaluation of the use of recycled gypsum as a substitute in gypsum production has to be carefully conducted. This paper focusses on the techniques for generating recycled gypsum from gypsum plasterboards, the related quality requirements and a comprehensive environmental evaluation of the complete process. PB - Rilem publications S.A.R.L. CY - Paris T2 - IV International Conference Progress of Recycling in the Built Environment CY - Lisbon, Portugal DA - 11.10.2018 KW - Environmental evaluation KW - Gypsum KW - CDW processing PY - 2018 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/48078 AN - OPUS4-48078 SN - 978-2-35158-208-4 VL - PRO 124 SP - 243 EP - 250 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany