The influence of fly ash characteristics as a supplementary cementitious material (SCM) on concrete’s mechanical properties
Y. SUNARNO
Abstract. The utilization of fly ash as a Supplementary Cementitious Material (SCM) in concrete offers numerous benefits that support sustainable construction. These advantages include reducing CO2 emissions, minimizing waste, enhancing energy efficiency, and lowering costs. Additionally, fly ash can improve the performance of concrete. The characteristics of the fly ash used significantly influence the performance of the resulting concrete. This study aims to evaluate the impact of three types of fly ash used as SCM. The tested fly ash samples originate from three different power plants, namely FA-BSW, FA-BAR, and FA-PLN. Testing was conducted by creating concrete mixtures using variations of these three fly ash sources and comparing them with a control concrete mixture using ordinary Portland cement (OPC), labeled as FA-0. Workability was measured through slump tests on fresh concrete, while dry density and compressive strength were evaluated on hardened concrete specimens (100 mm x 200 mm cylinders) at 3, 7, 28, and 56 days. Additionally, the Strength Activity Index (SAI) was analyzed to assess the pozzolanic activity of the fly ash relative to OPC. The findings from this study are intended to provide valuable insights into the characteristics and performance of these three fly ash types in concrete, as well as their influence on the mechanical properties of the material.
Keywords
Fly Ash, SCM, Workability, Compressive Strength, Mechanical Property, SAI
Published online 2/25/2025, 10 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Y. SUNARNO, The influence of fly ash characteristics as a supplementary cementitious material (SCM) on concrete’s mechanical properties, Materials Research Proceedings, Vol. 48, pp 587-596, 2025
DOI: https://doi.org/10.21741/9781644903414-64
The article was published as article 64 of the book Civil and Environmental Engineering for Resilient, Smart and Sustainable Solutions
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] J. Deja, et al., CO2 Emissions from Polish Cement Industry, International Journal of Greenhouse Gas Control 4 (2010) 583-588. https://doi.org/10.1016/j.ijggc.2010.02.002
[2] Y. Sunarno, M.W. Tjaronge, R. Irmawaty, A.B. Muhiddin, M.A. Caronge and M. Tumpu, Ultrasonic Pulse Velocity (UPV) and Initial Rate of Water absorption (IRA) of Foam Concrete containing Blended Cement, Materials Research Proceedings 31(2023) 571-580. https://doi.org/10.21741/9781644902592-59
[3] Y. Sunarno, P.R. Rangan, E. Ambun, M. Tumpu, Mechanical Properties of Foamed Concrete (FC) Using High Volume Fly Ash, International Journal of GEOMATE, Vol.26, Issue 118, pp.141-148. https://doi.org/10.21660/2024.118.g13323
[4] G. Xu, X. Shi, Characteristics and applications of fly ash as a sustainable construction material: A state-of-the-art review, Resources, Conservation & Recycling 136 (2018) 95-109. https://doi.org/10.1016/j.resconrec.2018.04.010
[5] J. M. Fox, Fly Ash Classification – Old and New Ideas, World of Coal Ash (WOCA) Conference in Lexington, KY, 2017.
[6] R. Siddique, Performance characteristics of high-volume Class F fly ash concrete, Cement and Concrete Research 34 (2004) 487-493. https://doi.org/10.1016/j.cemconres.2003.09.002
[7] D. K. Nayak, P.P. Abhilash, R. Singh, R. Kumar, and V. Kumar, Fly ash for sustainable construction: A review of fly ash concrete and its beneficial use case studies, Cleaner Materials 6 (2022) 100143. https://doi.org/10.1016/j.clema.2022.100143
[8] S. Ramzi and H. Hajiloo, The Effects of Supplementary Cementitious Materials (SCMs) on the Residual Mechanical Properties of Concrete after Exposure to High Temperatures – Review, Buildings 2023, 13(1), 103 https://doi.org/10.3390/buildings13010103
[9] T.A. Fodea, Y.A.C. Jandea, and T. Kivevele, Effects of different supplementary cementitious materials on durability and mechanical properties of cement composite – Comprehensive review, Heliyon 2023, volume 9, Issue 7, e17924 https://doi.org/10.1016/j.heliyon.2023.e17924
[10] Y. Sunarno, M.W. Tjaronge., R. Irmawaty and A.B. Muhiddin, Performance of High Early Strength Concrete (HESC) using Different Superplasticizer. IOP Conf. Ser.: Earth Environ. (2022) Sci. 1117 012034 https://doi.org/10.1088/1755-1315/1117/1/012034
[11] M.D.A. Thomas, Optimizing the Use of Fly Ash in Concrete, Portland Cement Association, 2017.
[12] ACI Committee 232, Use of Fly Ash in Concrete, American Concrete Institute, 2012.
[13] A.M. Neville, Properties of Concrete, Pearson Education, 2011
