Sai, Tenepalli Jai
Acid And Sulphate Resistance OfGeopolymer Mortar Synthesized From Wastewater Containing Highly Alkaline Substances - Vol.34(4), Oct-Dec - Pune NICMAR 2019 - 59-67p.
Availability offresh, pure and potable water has turned out to be a serious issue throughout the world. The cement and construction industries are among the prominent sectors responsible for water crisis as they consume vast volumes ofwater for various activities. In this regard, an experimental investigation is being carried out to assess the suitability ofreplacing distilled water with wastewaters for preparing the alkaline activator solution, which in turn is used in synthesizing geopolymer materials. This paper presents the durability performance ofgeopolymer mortar mixtures synthesized with wastewater containing a highly alkaline substance such as sodium carbonate when exposed to acid and sulfate attack. Test geopolymer mortar mixture was produced from class F fly ash, activated with alkaline activator solution produced by mixing wastewater which contained highly alkaline substance like sodium carbonate. Control geopolymer mortar cubes prepared with distilled water were used to compare the results. The experimental programme involved in casting, curing and immersing test and control mortar cubes separately in solutions of2% acidic (Hydrochloric acid, Sulphuric acid) and 5% sulfate (Sodium sulfate and Magnesium sulfate) solutions up to 84 days along with the evaluation oftheir resistance in terms ofvisual appearance, changes in mass and compressive strength at regular intervals. The results indicated that test geopolymer mortar mixtures prepared with wastewater containing alkaline substances were superior to the control mortar mixtures prepared with distilled water.
Construction Engineering and Management (CEM)
Acid And Sulphate Resistance OfGeopolymer Mortar Synthesized From Wastewater Containing Highly Alkaline Substances - Vol.34(4), Oct-Dec - Pune NICMAR 2019 - 59-67p.
Availability offresh, pure and potable water has turned out to be a serious issue throughout the world. The cement and construction industries are among the prominent sectors responsible for water crisis as they consume vast volumes ofwater for various activities. In this regard, an experimental investigation is being carried out to assess the suitability ofreplacing distilled water with wastewaters for preparing the alkaline activator solution, which in turn is used in synthesizing geopolymer materials. This paper presents the durability performance ofgeopolymer mortar mixtures synthesized with wastewater containing a highly alkaline substance such as sodium carbonate when exposed to acid and sulfate attack. Test geopolymer mortar mixture was produced from class F fly ash, activated with alkaline activator solution produced by mixing wastewater which contained highly alkaline substance like sodium carbonate. Control geopolymer mortar cubes prepared with distilled water were used to compare the results. The experimental programme involved in casting, curing and immersing test and control mortar cubes separately in solutions of2% acidic (Hydrochloric acid, Sulphuric acid) and 5% sulfate (Sodium sulfate and Magnesium sulfate) solutions up to 84 days along with the evaluation oftheir resistance in terms ofvisual appearance, changes in mass and compressive strength at regular intervals. The results indicated that test geopolymer mortar mixtures prepared with wastewater containing alkaline substances were superior to the control mortar mixtures prepared with distilled water.
Construction Engineering and Management (CEM)