Techno Press
You logged in as Techno Press

Computers and Concrete
  Volume 24, Number 5, November 2019 , pages 453-458
DOI: https://doi.org/10.12989/cac.2019.24.5.453
 


A critical review of slag and fly-ash based geopolymer concrete
Tülin Akcaoglu, Beste Cubukcuoglu and Ashraf Awad

 
Abstract
    Today, concrete remains the most important, durable, and reliable material that has been used in the construction sector, making it the most commonly used material after water. However, cement continues to exert many negative effects on the environment, including the production of carbon dioxide (CO2), which pollutes the atmosphere. Cement production is costly, and it also consumes energy and natural non- renewable resources, which are critical for sustainability. These factors represent the motivation for researchers to examine the various alternatives that can reduce the effects on the environment, natural resources, and energy consumption and enhance the mechanical properties of concrete. Geopolymer is one alternative that has been investigated; this can be produced using aluminosilicate materials such as low calcium (class F) FA, Ultra-Fine GGBS, and high calcium FA (class C, which are available worldwide as industrial, agricultural byproducts.). It has a high percentage of silica and alumina, which react with alkaline solution (activators). Aluminosilicate gel, which forms as a result of this reaction, is an effective binding material for the concrete. This paper presents an up-to-date review regarding the important engineering properties of geopolymer formed by FA and slag binders; the findings demonstrate that this type of geopolymer could be an adequate alternative to ordinary Portland cement (OPC). Due to the significant positive mechanical properties of slag-FA geopolymer cements and their positive effects on the environment, it represents a material that could potentially be used in the construction industry.
 
Key Words
    geopolymer cement; ordinary Portland cement; FA; slag; sustainability
 
Address
Tülin Akcaoglu: Department of Civil Engineering, Faculty of Engineering, Eastern Mediterranean University, Gazimagusa - North Cyprus, via Mersin 10, Turkey
Beste Cubukcuoglu: Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Near East University, Nicosia - North Cyprus via Mersin 10, Turkey
Ashraf Awad: Department of Civil Engineering, Faculty of Engineering, Eastern Mediterranean University, Gazimagusa - North Cyprus, via Mersin 10, Turkey
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2024 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: info@techno-press.com