Effects of sulfate on cement mortar with hybrid pozzolan substitution

Demir I., Guzelkucuk S., Sevim O.

ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH, cilt.21, sa.3, ss.275-283, 2018 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21 Sayı: 3
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.jestch.2018.04.009
  • Dergi Adı: ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.275-283
  • Anahtar Kelimeler: Bottom ash, Fly ash, Blast-furnace slag, Sulfate effect, Length change compressive strength, Microstructure, FLY-ASH, COMPRESSIVE STRENGTH, MAGNESIUM-SULFATE, BOTTOM ASH, DURABILITY, CONCRETE, SLAG, ATTACK, SODIUM, PASTE
  • Ankara Üniversitesi Adresli: Hayır

Özet

Sulfate is one of the most important chemical risks which affect the durability of concrete and reinforced concrete structures. Therefore, this study investigates the effects of sulfate on blended cement mortars. In this paper, cement mortar specimens were prepared with the substitution of CEM I 42.5 R cement with Fly ash + Bottom ash + Blast-furnace Slag at the ratios of 5%, 10%, 15%, and 20% along with a control specimen without additives. These prepared cement mortar specimens were then cured for 2, 7, 28, 90, 180, and 360 days either in potable water or 10% sodium sulfate (Na2SO4) solution. Cement paste specimens were subjected to the initial setting, final setting, and volumetric expansion tests in accordance with the TS EN 196-3 standard. Cured for 2, 7, 28, 90, 180, and 360 days, cement mortars were subjected to compressive strength tests as per the TS EN 196-1 standard while length change tests were conducted as per the ASTM C 1012 standard.