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  Journal Paper


Paper Title :
Effect of Curing Temperatures and NAOH Concentrations on Compressive Strength of Geopolymer Pastes Produced From Elaziğ Ferrochrome Slag

Author :Mehmet Burhan Karakoç, İbrahim Türkmen, Enes Ekinci, Fatih Kantarci

Article Citation :Mehmet Burhan Karakoç ,İbrahim Türkmen ,Enes Ekinci ,Fatih Kantarci , (2017 ) " Effect of Curing Temperatures and NAOH Concentrations on Compressive Strength of Geopolymer Pastes Produced From Elaziğ Ferrochrome Slag " , International Journal of Mechanical and Production Engineering (IJMPE) , pp. 89-91, Volume-5,Issue-12

Abstract : Recently, an increasing interest has been appeared for geopolymer as a binding material because of the benefits that it brings via, using of industrial waste materials such as ferrochrome slag, fly ash, blast furnace slag and reduction in greenhouse gas emission caused by cement production. The objective of the present work is to investigate effect of different NaOH concentrations and curing conditions on mechanical properties geopolymer pastes produced from Elazığ ferrochrome slag (EFS). EFS was alkali activated with NaOH solutions prepared with different molarities (8, 10, 12, 14 and 16M). Liquid/binder ratio was determined as 0.28 experimentally. Specimens produced in this way were cured at 50, 100, 150°C and laboratory conditions for 72h. For each specimen produced using this different parameters, the change in compressive strength was determined with time (3 to 28 day) for geopolymer pastes which were both cured in laboratory conditions and cured in oven three different curing temperatures. Additionally, ultrasonic pulse velocity values of geopolymer paste samples were obtained. The values obtained from compressive strength tests proved that there is an significant effect of different curing temperatures on mechanical properties of samples. It was also observed that the molarity of NaOH has a considerable effect on compressive strength. Overall results indicated that the mechanical properties of EFS based geopolymer pastes were significantly affected by different molarity of NaOH and curing temperatures. Keywords - Geopolymer paste, Elazığ ferrochrome slag, compressive strength, UPV

Type : Research paper


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