THE EFFECT OF METAKAOLIN USED AS CEMENT REPLACEMENT ON THE PROPERTIES OF HARDENED CEMENT PASTE
Vaičekauskienė V., Nagrockienė D., Pundienė I.
Pagini: 42-52
Publicat: 30 Nov 2023
DOI: 10.62991/MMT1996347826
Vizualizări: 524
Descărcări: 74
Rezumat: The article analyses the effect of expanded glass production by-product rich in metakaolin on the properties of hardened cement paste. Portland cement CEM II/A-LL 42.5 N with the average particle size of 14.21 μm and metakaolin with the average particle size of 22.34 μm were used for the tests. Six cement paste compositions were formulated by replacing 0 %, 2 %, 4 %, 6 %, 8 %, 10 % of cement with metakaolin. Ultrasonic pulse velocity, compressive strength, flexural strength, water absorption and porosity of hardened cement paste specimens were measured at 28 days. The analysis of hardened cement paste microstructure (SEM) and physical and mechanical properties leads to the conclusion that the replacement of 8% of cement in the mix with metakaolin creates the densest microstructure that produces the highest values of compressive and flexural strengths and ultrasonic pulse velocity and the lowest values of closed porosity and water absorption rate. It was found that 8 % was the optimal ratio of cement replacement with metakaolin. Metakaolin can be added at 8 % by weight of cement in the production of modified high-performance concrete.
Cuvinte cheie: metakaolin, hardened cement paste, compressive strength, water absorption
Citează acest articol: Vaičekauskienė V., Nagrockienė D., Pundienė I.. THE EFFECT OF METAKAOLIN USED AS CEMENT REPLACEMENT ON THE PROPERTIES OF HARDENED CEMENT PASTE. Journal of International Scientific Publications: Materials, Methods & Technologies 17, 42-52 (2023). https://doi.org/10.62991/MMT1996347826
Înapoi la cuprinsul volumului
© 2025 The Author(s). This is an open access article distributed under the terms of the
Creative Commons Attribution License https://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This permission does not cover any third party copyrighted material which may appear in the work requested.
Disclaimer: The Publisher and/or the editor(s) are not responsible for the statements, opinions, and data contained in any published works. These are solely the views of the individual author(s) and contributor(s). The Publisher and/or the editor(s) disclaim any liability for injury to individuals or property arising from the ideas, methods, instructions, or products mentioned in the content.
