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Materials, Methods & Technologies, Volume 9, 2015

Teodora Tinkova, Georgi Paraskov, Irena Grigorova, Ivan Nishkov
Pages: 414-421
Published: 31 May 2015
Views: 1,812
Downloads: 676
Abstract: This paper presents a laboratory investigation of new application opportunity of building waste materials and potential usage as a component in production of gypsum based building materials. Production of new type eco-friendly gypsum based composites was studied as a potential utilisation sector. The main focus is directed on gypsum binder mixture properties examination with different proportion of incorporated construction waste materials 5-45%. It was designed and tested fresh state behaviour of gypsum-waste mixture and specimens in standard water/binder ratio. Construction waste material is a fines obtained by combined crushing-sorting installations. Slump flow test of gypsum-waste suspension and dry samples characteristics as compressive and flexural strength, water absorption and shrinkage were tested. On the basis of the obtained results, it was established that the prepared gypsum-waste mixture is an alternative for the production of gypsum based building products. Using the tested mixture in manufacturing processes lead to reduction in the energy and water consumption.
Keywords: building waste, composite, sustainability, gypsum
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