Year 2021, Volume 11 , Issue 2, Pages 1255 - 1269 2021-06-01

The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer
The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer

Cemal KARAASLAN [1] , Engin YENER [2]


The effect of sodium hydroxide (SH) concentration and sodium silicate (SS) content in alkali activator on mechanical properties and wet-dry resistance of fly ash added pumice based geopolymer paste were investigated. In the study, the concentration of SH was used as 8, 10, 12 and 14 molar, while the weight ratio of SS to SH was used as 0, 1, 2 and 3. While the density of geopolymer paste samples increased significantly with the increase of SH molarity in mixtures with low SS content, it was less affected by SH molarity in mixtures with high SS content. For all SH molarity values, the compressive strength of the geopolymer paste samples increased with the increase of the SS/SH ratio, while a slight decrease was observed with the SS/SH ratio increasing from 2 to 3. However, with the increase of the SH molarity, the compressive strength of the samples was less affected by the SS content. As large cracks or splits occur in paste samples activated only with SH under the effect of wet-dry, their compressive strength could not be measured. The wet-dry performance of the paste samples activated with SS + SH was not affected much by the SH molarity and the SS/SH ratio and were close to each other. When looking at the microstructure studies, FTIR analyzes show that SS content provides a better geopolymerization, and SEM images show that micro-cracks relatively decrease with SS content.
The effect of sodium hydroxide (SH) concentration and sodium silicate (SS) content in alkali activator on mechanical properties and wet-dry resistance of fly ash added pumice based geopolymer paste were investigated. In the study, the concentration of SH was used as 8, 10, 12 and 14 molar, while the weight ratio of SS to SH was used as 0, 1, 2 and 3. While the density of geopolymer paste samples increased significantly with the increase of SH molarity in mixtures with low SS content, it was less affected by SH molarity in mixtures with high SS content. For all SH molarity values, the compressive strength of the geopolymer paste samples increased with the increase of the SS/SH ratio, while a slight decrease was observed with the SS/SH ratio increasing from 2 to 3. However, with the increase of the SH molarity, the compressive strength of the samples was less affected by the SS content. As large cracks or splits occur in paste samples activated only with SH under the effect of wet-dry, their compressive strength could not be measured. The wet-dry performance of the paste samples activated with SS + SH was not affected much by the SH molarity and the SS/SH ratio and were close to each other. When looking at the microstructure studies, FTIR analyzes show that SS content provides a better geopolymerization, and SEM images show that micro-cracks relatively decrease with SS content.
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Primary Language en
Subjects Civil Engineering
Published Date Haziran-2021
Journal Section İnşaat Mühendisliği / Civil Engineering
Authors

Orcid: 0000-0002-8993-7566
Author: Cemal KARAASLAN (Primary Author)
Institution: IĞDIR TEKNİK BİLİMLER MESLEK YÜKSEKOKULU
Country: Turkey


Orcid: 0000-0002-0286-2435
Author: Engin YENER
Institution: IĞDIR ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ
Country: Turkey


Thanks The authors would like to thank ARKOZ Mining - Ağrı Cement Factory for enabling us to benefit from laboratory facilities.
Dates

Application Date : December 14, 2020
Acceptance Date : March 1, 2021
Publication Date : June 1, 2021

Bibtex @research article { jist840872, journal = {Journal of the Institute of Science and Technology}, issn = {2146-0574}, eissn = {2536-4618}, address = {}, publisher = {Igdir University}, year = {2021}, volume = {11}, pages = {1255 - 1269}, doi = {10.21597/jist.840872}, title = {The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer}, key = {cite}, author = {Karaaslan, Cemal and Yener, Engin} }
APA Karaaslan, C , Yener, E . (2021). The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer . Journal of the Institute of Science and Technology , 11 (2) , 1255-1269 . DOI: 10.21597/jist.840872
MLA Karaaslan, C , Yener, E . "The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer" . Journal of the Institute of Science and Technology 11 (2021 ): 1255-1269 <https://dergipark.org.tr/en/pub/jist/issue/61423/840872>
Chicago Karaaslan, C , Yener, E . "The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer". Journal of the Institute of Science and Technology 11 (2021 ): 1255-1269
RIS TY - JOUR T1 - The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer AU - Cemal Karaaslan , Engin Yener Y1 - 2021 PY - 2021 N1 - doi: 10.21597/jist.840872 DO - 10.21597/jist.840872 T2 - Journal of the Institute of Science and Technology JF - Journal JO - JOR SP - 1255 EP - 1269 VL - 11 IS - 2 SN - 2146-0574-2536-4618 M3 - doi: 10.21597/jist.840872 UR - https://doi.org/10.21597/jist.840872 Y2 - 2021 ER -
EndNote %0 Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer %A Cemal Karaaslan , Engin Yener %T The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer %D 2021 %J Journal of the Institute of Science and Technology %P 2146-0574-2536-4618 %V 11 %N 2 %R doi: 10.21597/jist.840872 %U 10.21597/jist.840872
ISNAD Karaaslan, Cemal , Yener, Engin . "The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer". Journal of the Institute of Science and Technology 11 / 2 (June 2021): 1255-1269 . https://doi.org/10.21597/jist.840872
AMA Karaaslan C , Yener E . The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer. Iğdır Üniv. Fen Bil Enst. Der.. 2021; 11(2): 1255-1269.
Vancouver Karaaslan C , Yener E . The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer. Journal of the Institute of Science and Technology. 2021; 11(2): 1255-1269.
IEEE C. Karaaslan and E. Yener , "The Effect of Alkaline Activator Components on the Properties of Fly Ash Added Pumice Based Geopolymer", Journal of the Institute of Science and Technology, vol. 11, no. 2, pp. 1255-1269, Jun. 2021, doi:10.21597/jist.840872