About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Bogdanov R.R. – assistant E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Ibragimov R.A. – candidate of technical sciences, аssoсiаtе рrofеssor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Рotарovа L.I. – саndidаtе of сhеmiсаl sсiеnсеs, аssoсiаtе рrofеssor Е-mаil: ludmilарo@mаil.ru Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1 |
| Title of the article | Investigation of the interaction of a complex modifier for self-compacting concrete and its components using the IR-spectroscopy method |
| Abstract. | Problem statement. The aim of the study was to establish the nature of interactions between the components of a complex modifier (a hyperplasticizer based on polycarboxylate esters, a hydrophobizer based on potassium silicates and metakaolin), and the effect of a complex modifier on the properties of cement stone using the IR spectroscopy method. Results.The main results of the study are that a higher degree of crystallization of calcium hydrosilicates is observed in the presence of a complex modifier, which causes high physical and mechanical characteristics of the modified self-compacting concrete. It was revealed that the preliminary mixing of the superplasticizer and the water-soluble hydrophobizer in the complex modifier in its preliminary preparation not only does not reduce the effectiveness of the modifiers, but also binds them into a single component. It has been established that chemisorption of CH bonds is a superplasticizer. In this case, the introduction of metakaolin in the complex modifier leads to a chemical interaction of its components with the conversion of C-H bonds to other structures, apparently chemically related to metakaolin. Conclusions.The scientific and practical significance of the results of the work for building materials science and the construction industry is to establish the effectiveness of the preliminary mixing of the superplasticizer and hydrophobizer in the preparation of complex additives. |
| Keywords. | self-compacting concrete, infra-red spectroscopy, superplasticizer admix, hydrophobizer, metakaolin, complex modifier agent. |
| For citations: | Bogdanov R.R., Ibragimov R.A., Рotарovа L.I. Investigation of the interaction of a complex modifier for self-compacting concrete and its components using the IR-spectroscopy method // Izvestiya KGASU. 2017. №4(42) P.280-288. |
