CONCRETE

691.33

[:en]Gorkoltseva D. S.[:ru]Горкольцева Д. С.[:] [:en]postgraduate student, Tomsk State University of Architecture and Civil Engineering, Tomsk, Russia[:ru]аспирант, Томский государственный архитектурно-строительный университет, Томск, Россия[:]

[:ru]Копаница Н. О.[:en]Kopanitsa, N. O.[:] [:ru]д. т. н., профессор; Томский государственный архитектурно-строительный университет, г. Томск, Россия[:en]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