BACK
- BUILDING MATERIALS AND PRODUCTS
- Experience in Nano-Modification of Low Water Demand Cements
- UDC 691.544:666.949:691.322
Vadim G. KHOZIN, e-mail: khozin.vadim@yandex.ru
Oleg V. KHOHRYAKOV, e-mail: olvik@list.ru
Rashit K. NIZAMOV, e-mail: nizamov@kgasu.ru
Ramil R. KASHAPOV, e-mail: ramires120490@mail.ru
Daniil I. BAISHEV, e-mail: begamoth@mail.ru
Kazan State University of Architecture and Engineering, Zelenaya ul., 1, Kazan 420043, Russian Federation
Abstract. The general concentration dependence of nano-modification of materials (polymers, ceramics, cement) with carbon nano-tubes and nano-silica is considered. Experimental results of low-water demand cements LWDC-100 and LWDC-50 modification by adding different types of nano-sized silica additives introduced during the production process of this composite cement binder are presented. It is determined that all nano-silicas significantly increase the strength of hardened LWDC-100, and the most valuable effect is achieved with a modifier "Kovelos 35/01 T". On the basis of this work, it is established that nano-modification of low water demand cements is one of the methods for improving the cement binder, economic efficiency of which is due to the extremely low content of a nano-additive, at this its cost is not significant.
Key words: nano-modification, general regularity, nano-silica, low water demand cements, strength. - REFERENCES
1. Korolev E. V. Nanotechnology in construction material science. Analysis of the status and achievements. The path of development. Stroitel'nye materialy, 2014, no. 11, pp. 47-49. (In Russian).
2. Nelyubova V. V., Strokova V. V., Pavlenko N. V., Zhernovskiy I. V. Construction composites with application of nanostructured binder on the basis of materials of different genetic types. Stroitel'nye materialy, 2013, no. 2, pp. 11-15. (In Russian).
3. Yakovlev G. I., Galinovskiy A. L., Golubev V. A., et al. Nanostructuring as a way for increasing the adhesion properties of the system "Cement stone reinforcing basalt fiber". Izvestiya KGASU, 2015, no. 2, pp. 281-288. (In Russian).
4. Ehsan Ghafari, Hugo Costa, Eduardo Jъlio, Antуnio Portugal, Luisa Durгes. Optimization of UHPC by adding nanomaterials. Proceedings of hipermat 2012 - 3rd International symposium on UHPC and nanotechnology for high performance construction materials, Kassel, March 7-9, 2012. Kassel university press GmbH, Kassel. Pp. 71-78.
5. Khozin V. G., Abdrakhmanova L. A., Nizamov R. K. The overall concentration pattern of the effects of nanomodification of construction materials. Stroitel'nye materialy, 2015, no. 2, pp. 25-33. (In Russian).
6. Gusev B. V. Nanostructuring of concrete materials. Promyshlennoe i grazhdanskoe stroitel'stvo, 2016, no. 1, pp. 7-10. (In Russian).
7. Kaprielov S. S. General regularities of the formation of the structure of hardened cement paste and concrete with the addition of ultrafine materials. Beton I zhelezobeton, 1995, no. 4, pp. 16-20. (In Russian).
8. Chernishov E. M., Artamonova O. V., Slavcheva G. S. Applied nanotechnological tasks of increased efficiency in the hardening processes of cement concrete. Nanotechnologies in construction, 2017, no. 1, pp. 25-41. (In Russian).
9. Bashlykov N. F., Babaev Sh. G., et al. Concrete on binders with low water demand. Beton i zhelezobeton, 1988, no. 11, pp. 4-6. (In Russian).
10. Bikbau M. Ya. Nanocements - the future of the global cement industry and concrete technology. Part 2. Tekhnologii betonov, 2016, no. 1-2, pp. 37-41. (In Russian).
11. Khozin V. G., Khokhryakov O. V., Sibgatullin I. R., et al. Carbonate cements with low water demand, the "green" alternative cement industry. Stroitel'nye materialy, 2014, no. 5, pp. 76-82. (In Russian). - For citation: Khozin V. G., Khohryakov O. V., Nizamov R. K., Kashapov R. R., Baishev D. I. Experience in Nano-Modification of Low Water Demand Cements. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2018, no. 1, pp. 53-57. (In Russian).
BACK
