Eur. Phys. J. Plus (2017) 132: 491
https://doi.org/10.1140/epjp/i2017-11758-3

Regular Article

Thermal stress control using waste steel fibers in massive concretes

¹ Department of Civil Engineering, Al-e-Taha Institute of Higher Education, Tehran, Iran
² Department of Civil Engineering, Faculty of Engineering, Hakim Sabzevari University, Sabzevar, Iran
³ Department of Civil Engineering, Faculty of Marine Engineering, Chabahar Maritime University, Chabahar, Iran

^* e-mail: h.bakhshi@hsu.ac.ir

Received: 2 September 2017
Accepted: 26 October 2017
Published online: 27 November 2017

Abstract

One of the important subjects in massive concrete structures is the control of the generated heat of hydration and consequently the potential of cracking due to the thermal stress expansion. In the present study, using the waste turnery steel fibers in the massive concretes, the amount of used cement was reduced without changing the compressive strength. By substituting a part of the cement with waste steel fibers, the costs and the generated hydration heat were reduced and the tensile strength was increased. The results showed that by using 0.5% turnery waste steel fibers and consequently, reducing to 32% the cement content, the hydration heat reduced to 23.4% without changing the compressive strength. Moreover, the maximum heat gradient reduced from 18.5% in the plain concrete sample to 12% in the fiber-reinforced concrete sample.