RESEARCH HYDRATION STRUCTURE FORMATION OF HIGH-TEMPERATURE GYPSUM BINDERS ON THE BASIS OF KHUJAKUL DEPOSITS

Abstract

The article discusses the processes of high-temperature gypsum binder from the Khujakul deposit of the Republic of Karakalpakstan, in the temperature range of 550-1000°C and simulating the decomposition of its compositions, the phase composition of the resulting products, the main patterns of structure formation are established depending on the phase composition of the original binder.The results of the influence of the concentration of Ca(OH)2 on the strength of the structure in concentrated suspensions of gypsum at different temperatures are presented.The ways of regulating the properties of various gypsum binders with the help of additives and rational use of natural gypsum for the production of high-temperature gypsum binder for rocks with a predominance of the clay-carbonate part have been determined.21 As a result of high-temperature firing (800-1000°C) of carbonate-gypsum mixtures,a binder material with the ability to hydraulic hardening can be obtained.