Detailed Analytical EPMA Study of the OPC Pastes Prepared with the Addition of Raw and Milled Fly Ashes

Abstract:

Concrete and cement pastes belong to the most used building materials in human history and represent a solidified mixture of ordinary Portland cement (OPC), water, course and fine-grained aggregates. Fly ash is used as a pozzolanic additive to improve concrete properties. The fly ash property can also be modified by various treatments such as milling or size reduction with sieving. It was suggested that a beneficial pozzolanic reaction with fly ash gives high mechanical properties. Such pozzolanic reaction results in calcium silicate hydrate (C-S-H) phase formation. In this research comparative analytical EPMA study of the paste samples prepared with the addition of the milled and non-milled fly ashes has been performed to elucidate the pozzolanic reaction of the OPC with the milled and non-milled fly ashes. A higher pozzolanic reaction with CSH phase formation was observed in milled fly ash added paste.

• Periodical: Materials Science Forum (Volume 1125)
• Pages: 107-115
• DOI: https://doi.org/10.4028/p-VMuNu3
• Online since: September 2024
• Authors: Jadambaa Temuujin*, Claus H. Ruescher, Jamsran Erdenebayar, Takeyuki Ogata
• Keywords: Concrete, EPMA Study, Fly Ash, Milling, Pozzolanic Reaction

References

[1] R. S. Blissett and N. A. Rowson, A review of the multi-component utilisation of coal fly ash, Fuel, 97 (2012) 1-23

DOI: 10.1016/j.fuel.2012.03.024

[2] M. Ahmaruzzaman, A review on the utilization of fly ash, Prog. Ener. Combust. Sci. 36 (2010) 327-363

DOI: 10.1016/j.pecs.2009.11.003

[3] J. Temuujin, E. Surenjav, C.H. Ruescher, J.Vahlbruch, Review Processing and uses of fly ash addressing radioactivity (critical review), Chemosphere, 216 (2019) 866-882

DOI: 10.1016/j.chemosphere.2018.10.112

[4] J. Temuujin, A. Minjigmaa, U. Bayarzul, D. S. Kim, S-Ho Lee, H. J. Lee, C. H.Ruescher, K.J.D. MacKenzie, Properties of geopolymer binders prepared from milled pond ash, Materiales de Construcción, 67 (2017) e134

DOI: 10.3989/mc.2017.07716

[5] D. L. Pillay, O.B. Olalusi, M.M.H. Mostafa, A Review of the engineering properties of concrete with paper mill waste ash — Towards sustainable rigid pavement construction, Silicon, 13 (2021) 3191–3207

DOI: 10.1007/s12633-020-00664-2

[6] J. Temuujin, C. H. Ruescher, Microstructural and thermal characterization of concretes prepared with the addition of raw and milled fly ashes, J. Mater. Res. Techn., 20 (2022) 1726-1735

DOI: 10.1016/j.jmrt.2022.07.171

[7] Y. S. Chu, B. Davaabal, D .S. Kim, S. K. Kim, C. Ruescher, and J. Temuujin, Reactivity of fly ashes milled in different milling devices, Rev. Adv. Mater. Sci. 58 (2019) 179–188

DOI: 10.1515/rams-2019-0028

[8] https://unric.org/en/united-nations-sustainable-development-goals/, last accessed on 08 Jan, 2024.

[9] P. Balaz, Mechanochemistry in Nanoscience and Minerals Engineering, Springer, Berlin-Heidelberg, (2008).

[10] M. Erdemoglu and P. Balaz, An Overview of Surface Analysis Techniques for Characterization of Mechanically Activated Minerals, Min. Process. and Extractive Metall Rev. 33 (2012) 65-88

DOI: 10.1080/08827508.2010.542582

[11] J. Temuujin, B. Davaabal, U. Rentsennorov, E. Odbaatar, D. Enkhbayar, T. Tsend-Ayush, S. Danzandorj, C. H. Ruescher, K. J. D. MacKenzie, Characterization of alkali-activated materials prepared from continuous attrition-milled and ball-milled fly ashes. Minerals 13 (2023) 490.

DOI: 10.3390/min13040490

[12] J. Temuujin, A. Minjigmaa, Ts. Zolzaya, B. Davaabal, Study of geopolymer type paste and concrete from high calcium Mongolian fly ashes. Trans. Ind. Ceram. Soc. 73 (2014) 157-160

DOI: 10.1080/0371750X.2014.922431