Research Information System
Conference of the International Journal of Arts & Sciences, Roma, Italy, 19 - 22 November 2015, vol.08, no.5, pp.63-70
Geopolymer concrete offers the benefits as a construction material for sustainable development under
the sulfate attack. Geopolymer concrete provides using waste materials such as ferrochrome slag (FS)
and has a very low rate of green house gas emission. Geopolymer binding material was obtained by
alkaline activating FS with NaOH and Na2SiO3. Geopolymer concrete samples were produced by
mixing this binding material with river sand and crushed sand aggregates. Test specimens were
immersed in magnesium sulphate solutions (by weight 3%, 5% and 7%) for various periods of time and
the durability of geopolymer concrete was investigated. The residual compressive strength (28 and 90
days), change in weight were obtained experimentally. It was concluded that compressive strength of
both geopolymer and Ordinary Portland Cement (OPC) based concrete samples decreases with
increasing MgSO4 content and exposure duration. After exposure to 7% MgSO4 solution for 90 days,
the minimum decrease in compressive strength was seen in crushed sand aggregates geopolymer
concrete samples with 22%.