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Impact of Optimum Waste Content and NaOH Molarity Dosage on Self-Compacting Geopolymer Concrete Efficiency
Primary motive of the investigation is to assess the fresh and hardened characteristics of self-compacting geopolymer concrete (SCGPC) under ambient temperature curing conditions using fly ash and slag and activating them with a combination of sodium hydroxide and sodium silicate solution. The traditionally prepared geopolymer concrete which is cured at ambient temperature has very low workability, hence self-compacting geopolymer concrete with different dosage of waste material is suggested in this study. In the present work, molar concentration of sodium hydroxide solution is varied between 6 and 12 M. A total of eleven SCGPC samples is casted for each molar solution ranging from 100 FA: 0 GGBS to 0 FA: 100 GGBS at an interval of 10%. Rheological and mechanical properties are evaluated and then the molar concentration of sodium hydroxide solution and the ratio of fly ash to GGBS are optimized. Acquired results indicates that with the increase of molarity from 6 to 10 M, the strength properties increase but it decrease on further increment. Also, further it is noticed that with the increase of GGBS content, mechanical strength increases constantly but the workability reduces and beyond 60% dosage of GGBS, EFNARC specifications are not satisfied for achieving the self compactibility of concrete.
Impact of Optimum Waste Content and NaOH Molarity Dosage on Self-Compacting Geopolymer Concrete Efficiency
Primary motive of the investigation is to assess the fresh and hardened characteristics of self-compacting geopolymer concrete (SCGPC) under ambient temperature curing conditions using fly ash and slag and activating them with a combination of sodium hydroxide and sodium silicate solution. The traditionally prepared geopolymer concrete which is cured at ambient temperature has very low workability, hence self-compacting geopolymer concrete with different dosage of waste material is suggested in this study. In the present work, molar concentration of sodium hydroxide solution is varied between 6 and 12 M. A total of eleven SCGPC samples is casted for each molar solution ranging from 100 FA: 0 GGBS to 0 FA: 100 GGBS at an interval of 10%. Rheological and mechanical properties are evaluated and then the molar concentration of sodium hydroxide solution and the ratio of fly ash to GGBS are optimized. Acquired results indicates that with the increase of molarity from 6 to 10 M, the strength properties increase but it decrease on further increment. Also, further it is noticed that with the increase of GGBS content, mechanical strength increases constantly but the workability reduces and beyond 60% dosage of GGBS, EFNARC specifications are not satisfied for achieving the self compactibility of concrete.
Impact of Optimum Waste Content and NaOH Molarity Dosage on Self-Compacting Geopolymer Concrete Efficiency
Lecture Notes in Civil Engineering
Sil, Arjun (editor) / N. Kontoni, Denise-Penelope (editor) / Pancharathi, Rathish Kumar (editor) / Mazumder, Endow Ayar (author) / Prasad M., L. V. (author)
2022-10-04
9 pages
Article/Chapter (Book)
Electronic Resource
English
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