An investigation of resistance of sodium meta silicate activated slag mortar to acidic and basic mediums   
Yazarlar (6)
Doç. Dr. Şinasi BİNGÖL Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Cahit Bilim
Mersin Üniversitesi, Türkiye
Cengiz Duran Atiş
Erciyes Üniversitesi, Türkiye
Uğur Durak
Erciyes Üniversitesi, Türkiye
Serhan İlkentapar
Erciyes Üniversitesi, Türkiye
Okan Karahan
Erciyes Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Revista de la construcción
Dergi ISSN 0718-915X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 03-2020
Cilt No 19
Sayı 1
Sayfalar 127 / 133
DOI Numarası 10.7764/RDLC.19.1.127-133
Makale Linki https://doi.org/10.7764/rdlc.19.1.127-133
Özet
This study presents the resistance of sodium meta-silicate activated ground granulated blast furnace slag (GGBFS) to acidic and basic mediums. Geopolymer mortars were prepared with GGBFS activated by sodium meta-silicate activator having 4, 8, and 12% sodium concentrations by mass of slag. These mortars were exposed to two types of acid solutions, H 2 SO 4 and HCl with a 5% concentration of acid-water solution. Similarly, some specimens were exposed to a basic medium composed of 25% NaOH solution with water. Exposure time for the acidic and basic mediums was set to one year. Comparison of results obtained from slag based geopolymer mortar was made with normal Portland cement control mortar. Normal control samples lost compressive strength significantly after exposure to acidic and basic medium in comparison to alkali activated slag mortar. Particularly, after exposure to H 2 SO 4, the compressive strength of the normal control samples decreased by about 40%. Contrary to this, the slag based geopolymer mortar gained compressive strength after exposure to the acidic or basic mediums. An up to 21% strength increase was observed from the alkali activated slag mixtures made with 4% and 8% Na content.
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