Effect of Steel Fibers on Heat of Hydration and Mechanical Properties of Concrete Containing Fly Ash

  • Sajid Mehmood Department of Civil Engineering, University of Engineering and Technology, Taxila, Pakistan.
  • Faheem Butt Department of Civil Engineering, University of Engineering and Technology, Taxila, Pakistan.

Abstract

This study investigated the effects of steel fibers on the fresh and hardened properties, and heat of hydration of concrete containing FA (Fly Ash). A total of 192 samples were cast comprising cubes, cylinders, and prisms, for six concrete mixes with varying contents of steel fibers by volume and a fixed content of FA i.e. 15% by weight of cement. The semi adiabatic setup was used to monitor temperature rise due to the heat of hydration in the concrete mixes for fourteen days. The use of FA increased workability, and decreased early compressive strength, tensile strength and heat of hydration of concrete. However, an increase in the compressive strength of FA concrete was observed by the addition of steel fibers up to 0.9% whereas a consistent increase in the splitting tensile strength and modulus of rupture was observed with the addition of the steel fibers from 0.4-1.8%. Further the test results showed that increasing steel fibers content decrease the evolution of heat due to hydration. It was concluded that the FA concrete with steel fibers can be used in precast industry and mass construction projects due to the improved mechanical properties and lower heat of hydration.

Published
Jan 1, 2019
How to Cite
MEHMOOD, Sajid; BUTT, Faheem. Effect of Steel Fibers on Heat of Hydration and Mechanical Properties of Concrete Containing Fly Ash. Mehran University Research Journal of Engineering and Technology, [S.l.], v. 38, n. 1, p. 83-94, jan. 2019. ISSN 2413-7219. Available at: <http://publications.muet.edu.pk/index.php/muetrj/article/view/742>. Date accessed: 21 may 2019. doi: http://dx.doi.org/10.22581/muet1982.1901.07.
This is an open Access Article published by Mehran University of Engineering and Technolgy, Jamshoro under CCBY 4.0 International License