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Advances in Materials Science and Engineering
Volume 2017, Article ID 2316347, 13 pages
https://doi.org/10.1155/2017/2316347
Research Article

Mechanical Properties of Fiber-Reinforced Concrete Using Composite Binders

Far Eastern Federal University, Vladivostok 690950, Russia

Correspondence should be addressed to Roman Fediuk; ur.xednay@44namor

Received 14 June 2017; Revised 12 September 2017; Accepted 19 September 2017; Published 26 October 2017

Academic Editor: Rishi Gupta

Copyright © 2017 Roman Fediuk et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper investigates the creation of high-density impermeable concrete. The effect of the “cement, fly ash, and limestone” composite binders obtained by joint grinding with superplasticizer in the varioplanetary mill on the process of structure formation was studied. Compaction of structure on micro- and nanoscale levels was characterized by different techniques: X-ray diffraction, DTA-TGA, and electron microscopy. Results showed that the grinding of active mineral supplements allows crystallization centers to be created by ash particles as a result of the binding of Ca(OH)2 during hardening alite, which intensifies the clinker minerals hydration process; the presence of fine grains limestone also leads to the hydrocarboaluminates calcium formation. The relation between cement stone neoplasms composition as well as fibrous concrete porosity and permeability of composite at nanoscale level for use of composite binders with polydispersed mineral supplements was revealed. The results are of potential importance in developing the wide range of fine-grained fiber-reinforced concrete with a compressive strength more than 100 MPa, with low permeability under actual operating conditions.