This article is cited in 32 papers

High-rate deformation and fracture of fiber reinforced concrete

A. M. Bragov^ab, B. L. Karihaloo^c, Yu. V. Petrov^d, A. Yu. Konstantinov^a, D. A. Lamzin^ab, A. K. Lomunov^ab, I. V. Smirnov<sup>d

a</sup> Institute of Mechanics, Lobachevsky Nizhny Novgorod State University, Nizhny Novgorod, 603950, Russia
^b State University of Architecture and Civil Engineering University, Nizhny Novgorod, 603950, Russia
^c University of Cardiff, CF10 3XQ, Cardiff, UK
^d St. Petersburg State University, St. Petersburg, 199034, Russia

Abstract: This paper presents the results of dynamic compression and splitting-tensile tests of cardiff fiber reinforced concrete (CARDIFRC) composite using the Kolsky technique and its modification. The strength and deformation characteristics of fiber-reinforced concrete were determined experimentally at high strain rates. The mechanical characteristics were found to depend on the strain rate and stress rate. A uniform interpretation of the rate effects of fracture of the tested fiber-reinforced concrete is given on the basis of a structural-temporal approach. It is shown that the time dependences of both the compressive and tensile strengths of fiber reinforced concrete are well calculated using the incubation time criterion.

Keywords: fiber-reinforced concrete, Kolsky technique, compression, splitting, fracture, incubation time, dynamic strength.

UDC: 691.32

Received: 20.02.2012

 English version: Journal of Applied Mechanics and Technical Physics, 2012, 53:6, 926–933

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