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. | Stroganov V.F. – doctor of chemical science, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Sagadeev E.V. – doctor of chemical science Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Potapova L.I. – candidate of technical science Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kukoleva D.A. – 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 article | Integrated research process of biological damage of mineral building materials |
| Abstract. | The problem of biological damage (due to the action of various microorganisms) of building construction is actual on our days. It is known that the cause of biological destruction of building construction are not the microorganisms but their metabolic products. The products of metabolism are carboxylic acids: formic, acetic, oxalic, malic, citric, etc. These acids are distinguished by microorganisms in large quantities and at the outer surface of the concrete forms of aggression «film». pH of the medium will change with formation of acid film on the surface of material and the extent of microcracking will change its mechanical properties. The aim of this study is a integrated research of the processes biodamage building materials based on the study of model mediums with pH-metry and infrared spectroscopy. The study established the characters of the kinetic curves of pH ~ ?. It is revealed, that dependence of pH ~ ? in the interaction of oxalic acid and cement-sand grout is hopping. Dependence is monotonic until a certain time, then pH rises sharply for two hours and then dependence is monotonic again. IR-spectral study has done for the interpretation of the dependence of these interactions, which showed that oxalic acid has a «sandwich structure» as opposed to citric and acetic acids. Obviously, this explains the intermittent nature of dependencies pH ~ ?. This integrated approach can be used in the study of concretes of various compositions. |
| Keywords. | Biodeterioration, aerotank, cement-sand grout. |
| For citations: | Stroganov V.F., Sagadeev E.V., Potapova L.I., Kukoleva D.A. Integrated research process of biological damage of mineral building materials // Izvestiya KGASU. 2011. №4(18) P.274-281. |
