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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Mukhametrakhimov Rustem Khanifovich candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Galautdinov Albert Radikovich assistant E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleMechanical activated gypsum cement-pozzolan binder based on modified low branded materials
Abstract.Problem statement. Gypsum cement-pozzolan binders based on low branded gypsum and products based on them satisfy modern ecological and economic requirements. However, low water resistance of gypsum limits their wide application. The aim is to expand the scope of the gypsum cement-pozzolan binder by improving its performance characteristics by modifying the structure with chemical additives followed by mechanoactivation of the binder in an aqueous area. Results. The paper studied the rheological and mechanical properties of the modified low branded gypsum cement-pozzolan binder. The positive effect of the chemical modification of the binder on the kinetics of the initial structure formation, on the limits of strength, on curing kinetics and performance sample porosity. It is found that the mechanical activation of the modified low-branded gypsum cement-pozzolan binder in an aqueous area for 1-5 minutes increases the limits of compressive strength specimens to 23,3-28,9 %, flexural – at 50,3-61,4 %. Conclusions. The significance of the obtained results for the construction industry consists in the possibility of obtaining products with increased physical and mechanical characteristics while reducing raw material costs by modifying the structure of the gypsum cement-pozzolan binder with chemical additives followed by mechanoactivation in the aquatic area.
Keywords.gypsum cement-pozzolan binder, complex additive, porosity, hardening kinetics, mechanical activation.
For citations:Mukhametrakhimov R.K., Galautdinov A.R. Mechanical activated gypsum cement-pozzolan binder based on modified low branded materials // Izvestiya KGASU. 2018. №1(43) P.187-195.


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