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. | Khuzin A.F. – candidate of technical sciences, assistant E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Rahimov R.Z. – doctor of technical sciences, professor 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 | The effect of multiwalled carbon nanotubes on the porosity of the cement stone |
| Abstract. | Depending on the composition and preparation technology of cement composites can have high strength in compression and, at the same time, the relatively low strength values in bending and tension. This difference in performance for the most part, due to the porosity of the concrete. The cement paste, which is the binder in concrete, generally has a porous structure that includes macro-, micro- and mesopore. The past decade has increased interest in the works associated with the use of construction materials of the particles, the characteristic size of which does not exceed 100 nm. The study of the structure of cement stone shows the manifestation of particles of MWCNT reinforcing effect. Pore structure of samples of cement stone were carried out by optical methods (electron microscopy and x-ray) computed tomography. The study of the structure of cement stone with different magnification has allowed to establish that the modification of cement stone with multilayer carbon nano tubes leads to a redistribution of the number of pores to decrease their size. The decrease in the proportion of large pores with a simultaneous increase in the number of micro- and nano-pores contribute to the more dense structure of cement stone and as a consequence leads to increased strength characteristics of cement composites, water resistance, frost resistance and resistance to aggressive environments. |
| Keywords. | carbon nanotubes, an additive, cement stone, porosity, tomography. |
| For citations: | Khuzin A.F., Rahimov R.Z. The effect of multiwalled carbon nanotubes on the porosity of the cement stone // Izvestiya KGASU. 2016. №3(37) P.231-236. |
