The use of industrial waste for the production of slag-lime-gypsum binder
Abstract
The use of industrial waste for the production of slag-lime-gypsum binder
Incoming article date: 06.02.2020The use of industrial waste for the production and production of slag-lime-gypsum (SHIG) binder is considered. A binder based on blast furnace slag of the Novolipetsk Metallurgical Combine (NLMK), supplied to the KCR for the “Tsemzavod” of the republic, phosphogypsum dihydrate (FGD) of JSC “Nevinnomyssky Azot”, lime and sand quarries of the KCR for use in the local region has been developed. A comparative analysis of the compositions of the initial mixtures to obtain the SHIG of the binder, the mechanochemical activation of the mixtures in a drum mill, and the study of the physicomechanical and construction-technical properties of the binder were performed. The normal density, the setting time, the uniformity of the volume change, the tensile strength of the SHIG binder are determined. Using research methods, it was found that the resulting slag - lime - gypsum binder can replace cement in the technology of stone and plastering, with screeds and preparations for floors, as well as in the manufacture of small-sized wall blocks for the construction of cottage-type buildings.
Keywords: natural gypsum - dihydrate; phosphogypsum - dihydrate (FGD); granulated blast furnace slag; lime - fluff; slag - lime - gypsum binder; average density; fineness of grinding; normal density; uniformity of volume change; strength