Building Materials and Products
DOI: https://dx.doi.org/10.24866/2227-6858/2019-2-11
Fediuk R., Baranov A., Liseitsev Y., Smoliakov A., Cherkasov A., Ginevskiy V.
ROMAN FEDIUK, Candidate of Engineering Sciences, Associate Professor, e-mail: fedyuk.rs@dvfu.ru
ALEKSEY SMOLIAKOV, Student, e-mail: smoliakov.ak@mail.ru
ANDREY CHERKASOV, Student, e-mail: andrey_cherkasov_97@mail.ru
VLADISLAV GINEVSKIY, Student, e-mail: ginya97@gmail.com
Military Training Center
ANDREY BARANOV, Postgraduate, Department of Hydraulic Engineering,
Theory of Buildings and Structures, School of Engineering, е-mail: de_montgomery@mail.ru
YURIY LISEITSEV, Lecturer of the Military Department, Faculty of Military Training, е-mail: y.liss@mail.ru
Far Eastern Federal University
8 Sukhanova St., Vladivostok, Russia, 690091
Increasing the dynamic strength of fiber concretes
Abstract: The study of the dynamic strength of concrete structures is necessary for special structures that are operated at loads that vary over time. Despite the fact that a number of works are devoted to the issues of improving the dynamic strength of concrete, the Russian standards do not contain a method for determining the dynamic hardening coefficient, and formulas from foreign standards require adjustment. At the same time, the fiber concretes are very promising composites for use in the impact resistant structures. The paper presents the study results of the dynamic strength of the newly developed fiber-reinforced concrete. The method of testing cylinder samples has been improved by processing the ends with polyester glue. The results of dynamic strength up to 130 MPa were obtained. An empirical formula is proposed that gives adequate results for calculation of the the dynamic hardening coefficient of fiber concrete. The conditions and factors that determine the positive effect of fiber concrete matrix reinforcement, both at the stage of structure formation and at the stage of loading, are discussed.
Keywords: fiber concrete, protective structure, dynamic strength, dynamic hardening coefficient, dispersed reinforcement.
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