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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 Ibragimov R.A. – candidate of technical sciences, associate 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 articlePhysico-mechanical properties of high strength concrete modified by complex additive
Abstract.One of the most effective ways of influencing the structure and properties of cement compositions, is the activation of the binder, consists in dispersing the particles to sub-micron components. Good results are obtained when the modification of concrete mix complex additive containing hyper plasticizer and carbon nanotubes obtained by the pretreatment mechanic activator. The introduction of this additive increases the compressive strength of concrete at the age of 1 day to 2,37 times (at a rate of 500 kg cement / m3) 2,66 times (at a rate of 400 kg cement / m3) and 3,77 times (at cement consumption of 300 kg / m3). Frost heavy concrete rises to 150-300 cycles, depending on the flow of cement per 1 m3 of concrete. Thus, the frost resistance of concrete, modified only by hyper plasticizer and concrete prepared by activation of the binder increases equally. Increasing frost resistance of concrete is caused by a decrease in its total porosity. The total porosity of heavy concrete is reduced to 1,64-2,12 % compared to the control composition with the greatest reduction observed at the lowest porosity of the cement content of the concrete composition mixture.
Keywords.concrete, strength, complex additive, carbon nanotubes.
For citations:Khuzin A.F., Ibragimov R.A. Physico-mechanical properties of high strength concrete modified by complex additive // Izvestiya KGASU. 2015. №4(34) P.317-320.


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