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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.Khaliullin Marat Ilsurovich candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Faizrakhmanov Ildar Idrisovich post-graduate student 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 articleThe effect of ground limestone on the properties of a composite gypsum binder using thermally activated clay as a pozzolan component
Abstract.Problem statement. The purpose of this work is to study the effect of addition of ground limestone on the basic physical and mechanical properties of the composite gypsum binder, which includes Portland cement and pozzolanic additive of thermally activated clay as hydraulic components to reduce the consumption of more expensive firing components of the binder. Results. With the use of standard methods for the study of building materials, the dependences characterizing the effect of the addition of ground limestone on the water demand of the composite gypsum binder, density, strength, water absorption, water resistance of the artificial stone on its basis are obtained. It was found that the introduction of a composite gypsum binder limestone into the composition at specific surfaces of 500-800 m2/kg in an amount of up to 5-10 % by weight causes an increase in compressive strength by 15 % compared to the control samples. With the introduction of up to 10-15 % by weight of limestone with a dispersion, respectively, 300 and 500-800 m2/kg, the strength remains at the level of non-additive samples with the preservation of the softening coefficient corresponding to the water-resistant binder. Conclusions. The significance of the results for the construction industry is to obtain a composite gypsum binder with the addition of ground limestone of a certain dispersion, the introduction of which provides indicators of strength and water resistance of the binder at the level of non-additive samples with a reduction in the consumption of expensive firing components.
Keywords.composite gypsum binder, ground limestone, mineral filler, softening coefficient, specific surface area.
For citations:Khaliullin M.I., Faizrakhmanov I.I. The effect of ground limestone on the properties of a composite gypsum binder using thermally activated clay as a pozzolan component // Izvestiya KGASU. 2018. №3(45) P.203-209.


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