THE INFLUENCE OF THE ADDITION OF SUPERPLASTICIZER «POLIMIX» ON THE PROPERTIES OF MODIFIED GYPSUM BINDER.
THE INFLUENCE OF THE ADDITION OF SUPERPLASTICIZER «POLIMIX» ON THE PROPERTIES OF MODIFIED GYPSUM BINDER.
Ключевые слова:
modification • gypsum binder • chemical additive • superplasticizer “POLIMIX”• setting time• strength indicatorsАннотация
(Purpose): The purpose of the study is to identify the characteristics of the structure formation of gypsum binder and obtain a highly effective composite gypsum binder with high physical, technical and operational properties using the polycarboxylate superplasticizer POLIMIX. (Design/methodology/approach): The research used modern methods of physical and chemical analysis, standard methods for studying quality indicators of gypsum binder, mathematical methods and statistical methods for processing research results. (Findings): The mechanism of influence of the polycarboxylate superplasticizer on the processes of structure formation of the gypsum binder has been identified; it was found that a superplasticizer based on polycarboxylate ether helps to enhance the hydration process of the gypsum binder due to the excitation of active surface centers; mathematical models of the compressive strengthand softening coefficient of a composite gypsum binder with a polycarboxylate superplasticizer were obtained. (Originality/value): Research is based on experimental data obtained using modern testing and research methods (electrophysical method for studying the hardening process, scanning electron microscopy, X-ray phase analysis, mercury porosimetry), convergence and consistency of experimental results with theoretical principles and data from other researchers, successful testing of the results obtained in production conditions.
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