Review article

https://doi.org/10.13167/2015.11.1

HYDRO-ABRASIVE RESISTANCE AND MECHANICAL PROPERTIES OF CONCRETE WITH ADDED FLY ASH

Nenad Ristić orcid.org/0000-0002-8201-892X ; University of Niš, Faculty of Civil Engineering and Architecture
Zoran Grdić ; University of Niš, Faculty of Civil Engineering and Architecture
Gordana Topličić-Ćurčić ; University of Niš, Faculty of Civil Engineering and Architecture

Abstract

The durability of hydraulic engineering structures mostly depends on the resistance of their concrete surfaces to mechanical abrasion. In this paper, we study the hydro-abrasive resistance and mechanical properties of concrete in which cement is partially replaced with fly ash in various proportions. To evaluate these concretes, we measured their compressive strength, flexural strength, static modulus of elasticity, ultrasound velocity through concrete, and sclerometer rebound. The hydro-abrasive resistance of concrete with 15% fly ash was similar to that of reference concrete without fly ash. However, concretes with more than 15% fly ash exhibited lower resistance to abrasive erosion than the reference concrete. Also, the mechanical properties of the concrete deteriorated as the fly ash content increased.

Keywords

fly ash; concrete; hydro-abrasive resistance; mechanical properties

Hrčak ID:

149949

URI

https://hrcak.srce.hr/149949

Publication date:

23.12.2015.

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