Effect of Alkali Activator Concentrations and Elevated Temperature Curing Regimes on The Strength of Fly Ash Based Geopolymer Mortar
Abstract
Geopolymers have received considerable attention due to their properties and applications as environmentally friendly alternatives to ordinary Portland cement. Geopolymer mortar (GM) is an emerging alternative to ordinary Portland cement mortar (OPCM) and is produced via a polycondensation reaction between aluminosilicate source materials and an alkaline solution. As a relatively new material, many engineering properties of geopolymer mortar are still undetermined. In this study, the compressive strength, have been studied experimentally. A total of 12 geopolymer mix mortar were tested for the abovementioned characteristics. The experimental data was analysed by an analysis of variance (ANOVA) utilizing MINITAB16 statistical software. This method establishes the magnitude of the total variation in the results and distinguishes the random variation from the contribution of each variable. Based on ANOVA results, all the level of significance values was determined to be less than 0.05 which indicates the independent variables are effective on compressive strength of geopolymer mortars.
References
- [1] Vijai, K., Kumutha, R., & Vishnuram, B. G. 2010. Effect of types of curing on strength of geopolymer concrete. International Journal of the Physical Sciences, 5, 1419-1423.
- [2] Silverstrim, T., Martin, J., Rostami, H. 1999. Geopolymeric FA cement. Geopolymer International Conference (pp. 107-108). Saint-Quentin, France: Institut Geopolymere.
- [3] Hardjito, D., Rangan, B. V. 2005. Development and properties of low-calcium fly ash-based geopolymer concrete, Perth, Australia, Curtin University of Technology.
- [4] Worrell, E., & Galitsky, C. 2008. Energy efficiency improvement and cost saving opportunities for cement making. Washington, D.C., Environmental Protection Agency.
- [5] Manjunath, G. S., Radhakrishna, Giridhar, C., Jadhav, M. 2011. Compressive strength development in ambient cured geopolymer mortar, International Journal of Earth Sciences and Engineering, 4, 830-834.
- [6] Mermerdaş, K., Algın, Z., Oleiwi, S.M., Nassani D.E. 2017. Optimization of lightweight GGBFS and FA geopolymer mortars by response surface method. Construction and Building Materials, 139 (2017) 159–171
- [7] Davidovits, J. 1976. Solid phase synthesis of a mineral block polymer by low temperature polycondensation of aluminosilicate polymers, International Symposium on Macromolecules. Stockholm, Sweden: International Union of Pure and Applied Chemistry.
- [8] Davidovits, J. 1989. Plenary lecture and round table discussion: The greenhouse effect - A challenge for science, Symposium on Chemical Thermodynamics, Calorimetry and Thermal Analysis. Basel, Switzerland.
- [9] Rattanasak U, Chindaprasirt P. 2009 Influence of NaOH solution on the synthesis of F A geopolymer. Mineral Engineering, 22,1073–1078.
Alkali Aktivatör Konsantrasyonlarının ve Yüksek Sıcaklık Kür Rejiminin Uçucu Kül Bazlı Geopolimer Harç Dayanımı Üzerine Etkisi
Abstract
Geopolimerler sahip oldukları özellikler ve uygulama alanları nedeniyle normal Portland çimentosunun yerini alabilecek çevre dostu bağlayıcı malzeme olrak ele alınabilmektedir. Normal Portland çimentosu harcına yeni bir alternatif olan geopolimer harcı, alüminosilikat kaynağı malzemeler ve bir alkali çözeltisi arasındaki polikondensasyon reaksiyonu yoluyla üretilir. Nispeten yeni bir malzeme olan geopolimer karışımların birçok mühendislik özelliği hala belirlenmemiştir. Bu çalışmada, geopolimer harçların basınç dayanımı deneysel olarak incelenmiştir. Bunun için için toplam 12 adet geopolimer karışım harcı test edilmiştir. Deneysel veriler, MINITAB17 istatistik yazılımı kullanılarak bir varyans analizi (ANOVA) ile değerlendirilmiştir. Bu yöntem, sonuçlarda toplam varyasyonun büyüklüğünü belirler ve her değişkenin katkısından rastgele değişimi ayırt eder. ANOVA sonuçlarına göre belirlenen önem seviyeleri 0.05 değerinden daha düşük çıkmış ve bu şekilde değerlendirilen bağımsız değişkenlerin basınç dayanımı üzerinde etkili oldukları görülmüştür.
References
- [1] Vijai, K., Kumutha, R., & Vishnuram, B. G. 2010. Effect of types of curing on strength of geopolymer concrete. International Journal of the Physical Sciences, 5, 1419-1423.
- [2] Silverstrim, T., Martin, J., Rostami, H. 1999. Geopolymeric FA cement. Geopolymer International Conference (pp. 107-108). Saint-Quentin, France: Institut Geopolymere.
- [3] Hardjito, D., Rangan, B. V. 2005. Development and properties of low-calcium fly ash-based geopolymer concrete, Perth, Australia, Curtin University of Technology.
- [4] Worrell, E., & Galitsky, C. 2008. Energy efficiency improvement and cost saving opportunities for cement making. Washington, D.C., Environmental Protection Agency.
- [5] Manjunath, G. S., Radhakrishna, Giridhar, C., Jadhav, M. 2011. Compressive strength development in ambient cured geopolymer mortar, International Journal of Earth Sciences and Engineering, 4, 830-834.
- [6] Mermerdaş, K., Algın, Z., Oleiwi, S.M., Nassani D.E. 2017. Optimization of lightweight GGBFS and FA geopolymer mortars by response surface method. Construction and Building Materials, 139 (2017) 159–171
- [7] Davidovits, J. 1976. Solid phase synthesis of a mineral block polymer by low temperature polycondensation of aluminosilicate polymers, International Symposium on Macromolecules. Stockholm, Sweden: International Union of Pure and Applied Chemistry.
- [8] Davidovits, J. 1989. Plenary lecture and round table discussion: The greenhouse effect - A challenge for science, Symposium on Chemical Thermodynamics, Calorimetry and Thermal Analysis. Basel, Switzerland.
- [9] Rattanasak U, Chindaprasirt P. 2009 Influence of NaOH solution on the synthesis of F A geopolymer. Mineral Engineering, 22,1073–1078.
Details
| Primary Language | English |
|---|---|
| Subjects | Engineering |
| Journal Section | Articles |
| Authors | |
| Publication Date | December 31, 2018 |
| Submission Date | December 27, 2018 |
| Acceptance Date | January 4, 2019 |
| Published in Issue | Year 2018 Volume: 3 Issue: 3 |
