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STUDY OF THE GYPSUM COMPOSITES WITH SEVERAL TYPES OF LIGHTWEIGHT AGGREGATES

Dolezelova, M.; Krejsova, J.; Vimmrova, A.
Abstract:
Gypsum composites with different lightweight aggregates were studied. The importance of gypsum as one of the most environmentally friendly building binder increases nowadays and new ways of its utilization are searched. Using of aggregates in the gypsum is generally not necessary, because gypsum does not shrink, but they can be used for economic reasons or to improve the thermal or fire properties of the gypsum material. We studied the structure and properties of the gypsum composites with three types of lightweight fillers (perlite, expanded clay aggregate, recycled PUR) and compared them with the gypsum mortar with siliceous sand. The SEM and porosity analyses were performed together with the mechanical tests. The influence of each type of aggregate on the structure and properties of gypsum composite was studied. It was found, that the type of the aggregate has principal impact on the microstructure of gypsum composites and their mechanical and thermal properties.
SGEM Research areas:
Year:
2019
Type of Publication:
In Proceedings
Keywords:
gypsum composites; lightweight fillers; porosity; bulk density
Volume:
19
SGEM Book title:
19th International Multidisciplinary Scientific GeoConference SGEM 2019
Book number:
6.3
SGEM Series:
International Multidisciplinary Scientific GeoConference-SGEM
Pages:
363-370
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:
9 - 11 December, 2019
ISBN:
978-619-7408-99-7
ISSN:
1314-2704
Conference:
19th International Multidisciplinary Scientific GeoConference SGEM 2019, 9 - 11 December, 2019
DOI:
10.5593/sgem2019V/6.3/S09.047
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