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The effect of silica fume and micro SiO2 additive on the strength properties in kaolin based geopolymer mortars

Year 2021, Volume: 10 Issue: 2, 640 - 647, 27.07.2021

Mehmet Kaya

https://doi.org/10.28948/ngumuh.886863
Cited By: 1

Abstract

In this study, the effects of silica fume (SD) and micro SiO2 (MS) additives on the strength properties of geopolymer mortars produced using kaolin were investigated. The binder was prepared by adding 3%, 6% and 9% by weight of SD and MS into the kaolin separately. The binders were activated with NaOH containing 11%, 13%, 15% and 17% sodium (Na) by weight. The mixture consisting of binder, sand, NaOH and water was mixed in the mortar mixer and placed in the molds, and an activation temperature of 110 ºC was applied for 24 hours. Then, the samples that were removed from the mold were kept at room temperature for up to 28 days. Unit weight, void ratio, water absorption, ultrasound pulse velocity, flexural and compressive strength tests were performed on the samples. As a result of the experiments, the compressive strength of 21.4 MPa and 45.3 MPa was determined in samples containing 9% SD and 11% Na, 9% MS and 17% Na, respectively. In samples containing 11% and 13% Na by weight, no positive effect of SD and MS was observed on the strength, and SD and MS additives were found to increase the strength in samples produced with 15% and 17% Na.

Keywords

Kaolin Geopolymer Silica fume Flexural strength Compressive strength

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Kaolin esaslı geopolimer harçlarda silis dumanı ve mikro SiO2 katkısının dayanım özellikleri üzerine etkisi

Year 2021, Volume: 10 Issue: 2, 640 - 647, 27.07.2021

Mehmet Kaya

https://doi.org/10.28948/ngumuh.886863
Cited By: 1

Abstract

Bu çalışmada, kaolin kullanılarak üretilen geopolimer harçlarda, silis dumanı (SD) ve mikro SiO2 (MS) katkısının dayanım özellikleri üzerine etkisi incelenmiştir. Kaolin içeresine ağırlıkça %3, %6 ve %9 oranında SD ve MS ayrı ayrı katılarak bağlayıcı hazırlanmıştır. Bağlayıcılar, ağırlıkça %11,%13, %15 ve %17 sodyum (Na) içeren NaOH ile aktive edilmiştir. Bağlayıcı, kum, NaOH ve sudan oluşan karışım, harç mikseri içerisinde karıştırılıp kalıplara yerleştirildikten sonra 24 saat süre ile 110 ºC aktivasyon sıcaklığı uygulanmıştır. Daha sonra kalıptan çıkarılan numuneler 28 güne kadar oda sıcaklığında bekletilmiştir. Numuneler üzerinde birim ağırlık, boşluk oranı, su emme, ultrases geçiş hızı, eğilme ve basınç dayanımı deneyleri yapılmıştır Deneyler sonucunda, %9 SD ve %11 Na ile %9 MS ve %17 Na içeren numunelerde sırasıyla 21.4 MPa ve 45.3 MPa basınç dayanımı tespit edilmiştir. Ağırlıkça %11 ve %13 Na içeren numunelerde SD ve MS katkısının dayanım üzerinde olumlu etkisi gözlenmemiş, %15 ve %17 Na ile üretilmiş numunelerde ise SD ve MS katkısının dayanımı artırdığı tespit edilmiştir.

Keywords

kaolin geopolimer silis dumanı eğilme dayanımı basınç dayanımı

References

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  • F. N. Okoye, J. Durgaprasad, N. B. Singh, Mechanical properties of alkali activated flyash/Kaolin based geopolymer concrete, Construction and Building Materials. 98, 15, 685-691, 2015. https://doi.org/ 10.1016/j.conbuildmat.2015.08.009
  • W. Wang, H. Liu, and W Gu, A novel fabrication approach for improving the mechanical and sound absorbing properties of porous sound-absorbing ceramics. Journal of Alloys and Compounds. 695, 2477-2482, 2017. https://doi.org/10.1016/j.jallcom. 2016.11.147
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  • F. Zibouche, H. Kerdjoudj, L. J.-B d'Espinose, and H. van Damme, Geopolymers from Algerian metakaolin. Influence of secondary minerals. Applied Clay Science, 43 (3-4), 453-458, 2009. https://doi.org/10.1016/ j.clay.2008.11.001
  • Z. Zhang, H. Wang, X. Yao, and Y. Zhu, Effects of halloysite in kaolin on the formation and properties of geopolymers. Cement and Concrete Composites,34(5), 709-715, 2012. https://doi.org/10.1016/j.cemconcomp. 2012.02.003
  • C. H. Rüscher, A. Schulz, M. H. Gougazeh, and A. Ritzmann, Mechanical strength development of geopolymer binder and the effect of quartz content, Ceramic Engineering and Science Proceedings, 2013. http://dx.doi.org/10.1002/9781118807743.ch2
  • C. Y. Heah, H. Kamarudin, A. M. Mustafa Al Bakri, M. Luqman, I. Khairul Nizar, Y. M. Liew, Potential application of kaolin without calcine as greener concrete: A review. Australian Journal of Basic and Applied Sciences, 5(7), 1026-1035, 2011.
  • A. Heath, K. Paine, and M. McManus, Minimising the global warming potential of claybased geopolymers. Journal of Cleaner Production, 78, 75-83, 2014. https://doi.org/10.1016/ j.jclepro.2014.04.046
  • P. Duxson, G. C. Lukey, and J. S. J. Van Deventer, Physical evolution of na-geopolymer derived from metakaolin up to 1000 degrees. Journal of Materials Science, 42, 3044–3054, 2007. https://doi.org/10.1007/ s10853-006-0535-4
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There are 55 citations in total.

Details

Primary Language Turkish
Subjects Civil Engineering
Journal Section Civil Engineering
Authors

Mehmet Kaya 0000-0002-8116-0123

Publication Date July 27, 2021
Submission Date February 26, 2021
Acceptance Date March 25, 2021
Published in Issue Year 2021 Volume: 10 Issue: 2

Cite

APA Kaya, M. (2021). Kaolin esaslı geopolimer harçlarda silis dumanı ve mikro SiO2 katkısının dayanım özellikleri üzerine etkisi. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, 10(2), 640-647. https://doi.org/10.28948/ngumuh.886863
AMA Kaya M. Kaolin esaslı geopolimer harçlarda silis dumanı ve mikro SiO2 katkısının dayanım özellikleri üzerine etkisi. NOHU J. Eng. Sci. July 2021;10(2):640-647. doi:10.28948/ngumuh.886863
Chicago Kaya, Mehmet. “Kaolin Esaslı Geopolimer harçlarda Silis Dumanı Ve Mikro SiO2 katkısının dayanım özellikleri üzerine Etkisi”. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi 10, no. 2 (July 2021): 640-47. https://doi.org/10.28948/ngumuh.886863.
EndNote Kaya M (July 1, 2021) Kaolin esaslı geopolimer harçlarda silis dumanı ve mikro SiO2 katkısının dayanım özellikleri üzerine etkisi. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi 10 2 640–647.
IEEE M. Kaya, “Kaolin esaslı geopolimer harçlarda silis dumanı ve mikro SiO2 katkısının dayanım özellikleri üzerine etkisi”, NOHU J. Eng. Sci., vol. 10, no. 2, pp. 640–647, 2021, doi: 10.28948/ngumuh.886863.
ISNAD Kaya, Mehmet. “Kaolin Esaslı Geopolimer harçlarda Silis Dumanı Ve Mikro SiO2 katkısının dayanım özellikleri üzerine Etkisi”. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi 10/2 (July 2021), 640-647. https://doi.org/10.28948/ngumuh.886863.
JAMA Kaya M. Kaolin esaslı geopolimer harçlarda silis dumanı ve mikro SiO2 katkısının dayanım özellikleri üzerine etkisi. NOHU J. Eng. Sci. 2021;10:640–647.
MLA Kaya, Mehmet. “Kaolin Esaslı Geopolimer harçlarda Silis Dumanı Ve Mikro SiO2 katkısının dayanım özellikleri üzerine Etkisi”. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, vol. 10, no. 2, 2021, pp. 640-7, doi:10.28948/ngumuh.886863.
Vancouver Kaya M. Kaolin esaslı geopolimer harçlarda silis dumanı ve mikro SiO2 katkısının dayanım özellikleri üzerine etkisi. NOHU J. Eng. Sci. 2021;10(2):640-7.

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