AbstractAbout AuthorsReferences
Issues of improving the durability of flat roofs of buildings due to the use of modified self-compacting concrete (SCC) are considered. When modifying SCC, a complex modifier has been developed and the optimization of the composition of the complex modifier with the help of the three-factor experiment has been made. Physical-mechanical properties of SCC obtained have been determined. The microstructure and phase composition of the modified cement stone were studied. On the basis of the research conducted, namely X-ray phase analysis and electronic microscopy, it is concluded that the reduced content of calcium hydroxide in samples with complex modifier is due to adsorption of calcium hydroxide with high-disperse particles and interaction reaction with meta-kaolin that also contributes to reducing the content of calcium hydroxide in the cement stone. The data obtained make it possible to speak about high operational characteristics of SCC. When the flow class is P5, the modified SCC is of compression strength B50, high frost resistance (F600), and water- proofing (W16)
R.R. BOGDANOV, Engineer(This email address is being protected from spambots. You need JavaScript enabled to view it.),
R.A. IBRAGIMOV, Candidate of Sciences (Engineering)
R.A. IBRAGIMOV, Candidate of Sciences (Engineering)
Kazan State University of Architecture and Engineering (1, Zelenaya Street, Kazan, 420043, Russian Federation)
1. Shtein I.I. Novye krovel’nye materialy dlya krupnopanel’nykh krysh [New roofing materials for large-panel roof]. Leningrad: Stroyizdat.1966. 130 p.
2. Patent RF 141336. Bezrulonnaya monolitnaya krovlya [No roll monolithic roof]. Izotov V.S., Ibragimov R.A., Bogdanov R.R., Ibneev B.T. Declared 09.01.2014. Published 27.05.2014. Bulletin No. 15. (In Russian).
3. Kirsanova A.A., Kramar L.YA. Organomineral modifiers on the basis of meta-kaolin for cement concretes.Stroitel’nye Materialy [Construction Materials]. 2013. No. 11, pp. 54–56. (In Russian).
4. Sheinfel’d A.V. Organic-modifiers as a factor that in- creases the durability of reinforced concrete structu- res. Beton i zhelezobeton. 2014. No. 3, pp. 16–21. (In Russian).
5. Kalashnikov V.I., Khvastunov A.V., Khvastunov V.L. Physical and mechanical and hygrometric properties of powder-activated high crush concrete and fiber-rein- forced concrete with a low specific consumption per unit of cement strength. Nauchno-tekhnicheskii vestnik Povolzh’ya. 2011. No. 5, pp. 161–164. (In Russian).
6. Izotov V.S., Ibragimov R.A. Influence of some hyper- plasticizers on the basic properties of cement composi- tions. Stroitel’nye Materialy [Construction Materials]. 2010. No. 11, pp. 14–17. (In Russian).
7. Izotov V.S., Ibragimov R.A., Bogdanov R.R. Studies of the influence of super- and giper plasticizers on the basic properties of cement paste. Izvestiya KazGASU. 2013. No. 2 (24), pp. 221–225. (In Russian).
8. Voytovich V.A., Hryapchenkova I.N. About trends in application of hydrophobisators in construction (information). Stroitel’nye Materialy [Construction Materials]. 2015. No. 7, pp. 76–80. (In Russian).
9. Izotov V.S., Ibragimov R.A., Bogdanov R.R. Studies of the influence of domestic water-repelling additions on the basic properties of cement paste and mortar. Izvestiya KazGASU. 2013. No. 4 (26), pp. 207–210. (In Russian).
10. Izotov V.S., Ibragimov R.A., Bogdanov R.R. Properties of modified self-compacting concrete for flat roofs of buildings. Materials of the VIII Academic readings of RAASN “Mechanics of destruction of building materials and structures”. Kazan. 2014, pp. 27–31. (In Russian).
2. Patent RF 141336. Bezrulonnaya monolitnaya krovlya [No roll monolithic roof]. Izotov V.S., Ibragimov R.A., Bogdanov R.R., Ibneev B.T. Declared 09.01.2014. Published 27.05.2014. Bulletin No. 15. (In Russian).
3. Kirsanova A.A., Kramar L.YA. Organomineral modifiers on the basis of meta-kaolin for cement concretes.Stroitel’nye Materialy [Construction Materials]. 2013. No. 11, pp. 54–56. (In Russian).
4. Sheinfel’d A.V. Organic-modifiers as a factor that in- creases the durability of reinforced concrete structu- res. Beton i zhelezobeton. 2014. No. 3, pp. 16–21. (In Russian).
5. Kalashnikov V.I., Khvastunov A.V., Khvastunov V.L. Physical and mechanical and hygrometric properties of powder-activated high crush concrete and fiber-rein- forced concrete with a low specific consumption per unit of cement strength. Nauchno-tekhnicheskii vestnik Povolzh’ya. 2011. No. 5, pp. 161–164. (In Russian).
6. Izotov V.S., Ibragimov R.A. Influence of some hyper- plasticizers on the basic properties of cement composi- tions. Stroitel’nye Materialy [Construction Materials]. 2010. No. 11, pp. 14–17. (In Russian).
7. Izotov V.S., Ibragimov R.A., Bogdanov R.R. Studies of the influence of super- and giper plasticizers on the basic properties of cement paste. Izvestiya KazGASU. 2013. No. 2 (24), pp. 221–225. (In Russian).
8. Voytovich V.A., Hryapchenkova I.N. About trends in application of hydrophobisators in construction (information). Stroitel’nye Materialy [Construction Materials]. 2015. No. 7, pp. 76–80. (In Russian).
9. Izotov V.S., Ibragimov R.A., Bogdanov R.R. Studies of the influence of domestic water-repelling additions on the basic properties of cement paste and mortar. Izvestiya KazGASU. 2013. No. 4 (26), pp. 207–210. (In Russian).
10. Izotov V.S., Ibragimov R.A., Bogdanov R.R. Properties of modified self-compacting concrete for flat roofs of buildings. Materials of the VIII Academic readings of RAASN “Mechanics of destruction of building materials and structures”. Kazan. 2014, pp. 27–31. (In Russian).
For citation: Bogdanov R.R., Ibragimov R.A. Composition, properties, and microstructure of modified self-compacting concrete for water proofing of flat roofs of buildings. Stroitel’nye Materialy [Construction Materials]. 2017. No. 7, pp. 39–43. DOI: https://doi.org/10.31659/0585-430X-2017-750-7-39-43. (In Russian)