Effect of High Temperature on the Strength of Geopolymer Concrete Produced from Industrial Tailings


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Top S. , Timür İ., Köken E. , Kurşunoğlu S. , Vapur H.

6 th International Conference on Materials Science and Nanotechnology For Next Generation (MSNG2019), Niğde, Türkiye, 16 - 18 Kasım 2019, ss.364-370

  • Basıldığı Şehir: Niğde
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayısı: ss.364-370

Özet

If the concrete is affected by high temperature, significant decreases in strength are observed. The temperature of the concrete at 250-300 °C is considered as a limit. It is stated that the damage occurring below this temperature is insignificant. As the temperature progresses into the concrete during the fire, the regions where the temperature rises above these limits are damaged and the carrier part of the structure decreases gradually. In this study, we researched the strength properties of the geopolymer concretes produced from the mortar, which is a mixture of slag, fly ash and sodium silicate (Na2SiO3) solution. Uniaxial compressive strengths (UCS), point load strengths (PLS), and the stress-strain curves were revealed and the optimal condition for geopolymer concrete production were determined. After the optimum conditions were selected, the concrete specimens were exposured to high temperatures (400, 500 and 600 °C). Effect of the high temperatures on strength of the produced specimens were examined.