Assistant Professor Department of civil Engineering Nehru Institute of Technology
Abstract
Geopolymers are novel binding materials produced by the alkaline activation of rich aluminosilicate materials. Geopolymer bindersareconsideredasgreenbuildingmaterialsthathaveincreasing potentialtoreplacetheordinaryPortlandcementinthe concrete industry. This study investigated the alkali solution effects on the physical and mechanical properties of the high calcium fly ash based geopolymers. The parameters involved in this study were the NaOH solution molarity and the Na2SiO3/NaOHratio.ThreeNaOHconcentrations(8,10,and12molars)wereinvestigated.The Na2SiO3/NaOHratiowasvaried between 1 and 2.5. The results showed that the studied parameters significantly affected the properties of the produced geopolymer mortars. The workability and setting time were found to decrease by increasing the NaOH concentration or by increasing the Na2SiO3/NaOH ratio. The influence of the NaOH concentration was higher on the workability and setting time while the Na2SiO3/NaOH ratio highly affected the compressive strength. The initial setting time was in the range of 45-105 minuteswhilethefinalsettingoccurredquicklyafterthatwithin70- 115minutes.Ovencuringmethodresultedinhighstrengthat earlyageswhereallofthemixeswereabletoachievemorethan75%ofthe28daysstrengthwithint hefirst3days.The28-days compressivestrengthrangedbetween60- 85MPa,whichpromotestheuseofthehighcalciumflyashfortheproductionofearly high strength geopolymerconcrete.
anand, A., S, B., L, A., & Kumar, A. (2020). EFFECTS OF ALKALINE SOLUTION ON PROPERTIES OF THE HCFA GEOPOLYMER MORTARS. Int. J. of Aquatic Science, 11(1), 513-525.
MLA
Archana anand; Beaulah, S; Aparana, L; Ashok Kumar. "EFFECTS OF ALKALINE SOLUTION ON PROPERTIES OF THE HCFA GEOPOLYMER MORTARS". Int. J. of Aquatic Science, 11, 1, 2020, 513-525.
HARVARD
anand, A., S, B., L, A., Kumar, A. (2020). 'EFFECTS OF ALKALINE SOLUTION ON PROPERTIES OF THE HCFA GEOPOLYMER MORTARS', Int. J. of Aquatic Science, 11(1), pp. 513-525.
VANCOUVER
anand, A., S, B., L, A., Kumar, A. EFFECTS OF ALKALINE SOLUTION ON PROPERTIES OF THE HCFA GEOPOLYMER MORTARS. Int. J. of Aquatic Science, 2020; 11(1): 513-525.
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