Effect of Composition on Geopolymer Foam Concrete Basic Properties
Journal Title: Afyon Kocatepe Üniversitesi Uluslararası Mühendislik Teknolojileri ve Uygulamalı Bilimler Dergisi - Year 2018, Vol 1, Issue 1
Abstract
Geopolymer technology provides a new and good solution for avoiding the negative effects of environment and ecology on the use of fly ash. Natural minerals and inorganic polymers which can be produced by reaction of aluminosilicate minerals such as fly ash, blast furnace slag, etc. in the alkaline environment were usually formed by NaOH and sodium silicate. In this study, fly ash was used as basic Geopolymer material. Hydrogen peroxide was used as the foaming agent. Different sample series were prepared by changing the mixing ratios of fly ash and blast furnace slag. Physical and mechanical properties were tested. Mineralogical and micro structural characterizations were carried out by XRD and SEM techniques. Increasing blast furnace slag addition caused crack formation. The addition of large aggregates significantly reduced drying shrinkage and prevented crack formation. Likely, it was observed that the coarse aggregate addition contributed to reduce the density of geopolymer foam concrete blocks.
Authors and Affiliations
M. Serhat BAŞPINAR1, Cansu KURTULUS
Keywords
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