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UTILIZATION OF CONCRETE SLURRY WASTE IN GYPSUM BASED COMPOSITES

Reiterman, P.; Davidova, V.; Keppert, M.
Abstract:
The reduction of carbon dioxide emissions become the global effort of entire scientific community. Various environmental friendly technologies are currently developed and also applied worldwide. The concrete is the most used building material on Earth and its production is still rising. Its production is related to huge emissions of carbon dioxide due to Portland cement production and generation of waste such as concrete slurry waste (CSW). Sedimented CSW contains considerable amount of cement, calcium and fine fillers, which could be efficiently reuse for the formulation of new composites. This paper deals with the utilization of two types of CSW, which was applied for the modification of the gypsum. Studied CSW were applied as partial replacement of the gypsum. The replacement by CSW was combined with the fly ash as well to reduce the content of Portlandite. Studied mixtures were studied in terms of their mechanical properties and bulk density. Performed experimental program confirmed, that CSW is suitable for the application in gypsum based composites. The replacement by 5 wt.% led to the increase of mechanical performance by 10 %.
SGEM Research areas:
Year:
2019
Type of Publication:
In Proceedings
Keywords:
concrete slurry waste; mechanical properties; gypsum.
Volume:
19
SGEM Book title:
19th International Multidisciplinary Scientific GeoConference SGEM 2019
Book number:
6.2
SGEM Series:
International Multidisciplinary Scientific GeoConference-SGEM
Pages:
317-324
Publisher address:
51 Alexander Malinov blvd, Sofia, 1712, Bulgaria
SGEM supporters:
Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
Period:
30 June - 6 July, 2019
ISBN:
978-619-7408-89-8
ISSN:
1314-2704
Conference:
19th International Multidisciplinary Scientific GeoConference SGEM 2019, 30 June - 6 July, 2019
DOI:
10.5593/sgem2019/6.2/S26.041
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