Journal of
Faculty of Civil Engineering

JOURNAL OF FACULTY OF CIVIL ENGINEERING
INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN CIVILENGINEERING 25, 2014.y., pp. 849-858

	DOI: 10.14415/konferencijaGFS2014.115
	UDC: 666.973.2:502.17
	CC-BY-SA 4.0 license
	Author : Dragaš, Jelena; Marinković, Snežana; Ignjatović, Ivan; Tošić, Nikola
	Summary:
	Sustainability is important to the well-being of our planet, continued growth of a society and human development. Concrete is the most widely used construction material in the world. For a variety of reasons, the concrete construction industry is not sustainable: it consumes huge quantities of virgin materials, the production of Portland cement is a major contributor to greenhouse gas emissions, and many concrete structures suffer from lack of durability. Recent research has led to the point where numerous by-products of industrial processes with pozzolanic properties can be substituted partially for cement. One of the most widely used pozzolanic materials in concrete is fly ash – a by-product of burning ground coal in power plants. Addition of fly ash to concrete and replacement of cement up to 30 % can improve workability, porosity and durability. As a result, fly ash content up to 30 % in cement has become generally accepted. In this paper, a brief review of the published research on the properties of concrete containing from 30 % to 70 % replacement of cement with fly ash – so called high-volume fly ash concrete - is presented. Mechanisms are discussed by which the incorporation of high volume of fly ash in concrete reduces the water demand, improves the workability and enhances durability.
	Keywords:
	High volume fly ash concrete, Mechanical properties, Durability, Cement