Effect of Elevated Temperature on Alkali Activated Slag and Fly Ash Based Geopolymer Concrete
Mohamed H. Agamy1, Anwar M. Mohammed2, Sherif F.M. Abd Elnaby3, Rana S. Abd Elaziz4

1Mohamed H. Agamy*, Assistant Professor, Mataria, Helwan University.
2Anwar M. Mohammed, Associate professor, Housing and Building National Research Center.
3Sherif F.M. Abd Elnaby, president of the Egyptian Russian University and Professor of Strength and Properties of Construction Materials, Civil Engineering Dept., Mataria, Helwan University.
4Rana Samy, Civil Engineer, Faculty of Engineering Tanta University.

Manuscript received on March 30, 2020. | Revised Manuscript received on April 05, 2020. | Manuscript published on April 30, 2020. | PP: 1240-1250 | Volume-9 Issue-4, April 2020. | Retrieval Number: D7935049420/2020©BEIESP | DOI: 10.35940/ijeat.D7935.049420
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Activated Slag (AAS) and Fly Ash (FA) based geopolymer concrete a new blended alkali-activated concrete that has been progressively studied over the past years because of its environmental benefits superior engineering properties. Geopolymer has many favorable characteristics in comparison to Ordinary Portland Cement. Many base materials could be utilized to make geopolymer with the convenient concentration of activator solution. In this study, the experimental program composed of two phases; phase on divided into four groups; Group one deliberated the effect of sodium hydroxide molarity and different curing condition on compressive strength. Group two studied the effect of alkali activated solution (NaOH and Na2SiO3) content on compressive strength and workability. The effect of sand replacement with slag on compressive strength and workability was explained in group three. Group four studied the effect of slag replacement with several base materials Fly Ash (FA), Ordinary Portland Cement (OPC), pulverized Red Brick (PRB), and Meta Kaolin (MK). Phase two contains three mixtures from phase one which had the highest compressive strength. For each mixture, the fresh concrete test was air content. In addition the hardened concrete tests were the compressive strength at 3, 7, 28, 90, 180, and 365 days, the flexural strength at 28, 90, and 365 days, and the young’s modulus at 28, 90, and 365 days. Moreover; the three mixtures were exposed to elevated temperature at 100oC, 300oC, and 600oC to study the effect of elevated temperature on compressive and flexural strength.
Keywords: Alkali activated slag (AAS), Geopolymer concrete, Ground granulated blast furnace slag (GGBS), fly ash (FA),