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DEVELOPMENT OF COMPOSITIONS AND RESEARCH OF PHYSICO-MECHANICAL PROPERTIES OF COMPOSITE MATERIAL BASED ON GYPSUM BINDERS AND PEAT GRANULES

CONCRETE

691.33

Gorkoltseva D. S. postgraduate student, Tomsk State University of Architecture and Civil Engineering, Tomsk, Russia

Kopanitsa, N. O. Dr. Tech. Sc., prof., Tomsk State University of Architecture and Construction, Tomsk, Russia

Alitinform №4 (65) 2021 г. 42-49 p.

Abstract

The article presents the results of studies of the physical and mechanical properties of lightweight concrete based on gypsum binders and peat-vermiculite granules. The possibility of producing a composite material based on peat-vermiculite granules and gypsum is considered.
The relationship between strength characteristics and density has been studied, and it has been established that at a density of up to 850 kg/m3 an increase in the strength of the composite is not observed. In the work, experimental studies have established that with an increase in the particle size of the aggregate more than 6 mm, it will lead to a decrease in the average strength of the composite. Based on the data obtained, the drying temperature of lightweight concrete based on gypsum binders and peat-vermiculite granules was determined at 65–80 °C, relative humidity of the environment 45–65 %, exposure time 1 hour.

Key words:

lightweight concrete, gypsum, peat-vermiculite material, peat, peat-based thermal insulation materials, granular materials, peat-vermiculite mixture, composite material

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