2Istanbul University, Engineering Faculty, Civil Engineering Department, Avcilar campus, Istanbul, Turkey
Abstract
In the current studies which focus on the impact of CO2 emissions that released from the cement industry, showed the importance
of finding alternative binders other than cement like geopolymer. This paper presented metakaolin based geopolymer which was
manufactured by partially replacing metakaolin with colemanite with different percentages (10%, 20%, and 30%), to investigate
the effect of colemanite on the mechanical properties of geopolymer. Then a comparison was carried out between non-fibrous
specimens and basalt fiber reinforced ones to evaluate the improvement in terms of flexural and compressive strength of
metakaolin-based geopolymer. The results showed that replacing metakaolin with 10% colemanite and adding 1% basalt fiber
achieved 28.17% improvement in flexural strength at age 7 days compared to the reference sample.
