Issue 61

A.A. ELShami et alii, Frattura ed Integrità Strutturale, 61 (2022) 352-371; DOI: 10.3221/IGF-ESIS.61.24

Improvement of hydration products for self-compacting concrete by using magnetized water

A.A. ELShami Housing & Building National Research Centre, Dokki, Giza, Egypt materialhnbrc@yahoo.com, http://orcid.org/0000-0002-9075-7669 Noura Essam Misr Higher Institute, University of Elmansura, Egypt nouraessam381@yahoo.com, http://orcid.org/0000-0002-8701-0724 El-Shikh M. Yousry Faculty of engineering, El mansura University, Egypt Mohamed_elshikh@yahoo.com, http://orcid.org/0000-0002-0723-2694

A BSTRACT . Magnetized water (MW) is one of the most effective and economical ways to improve the properties of self-compacting concrete (SCC). Therefore, the aim of this study is to improve the fresh, mechanical, and microstructural properties of SCC using MW. For this purpose, a total of 12 mixes were produced with silica fume (SF) content (5% and 10% by weight of cement), and the mixing water passed through a permanent magnetic field (with a strength of 1.4 T) for 50, 100, and 150 cycles. Tests were performed for fresh properties (Slump flow, T50cm, V-funnel, and L box), for mechanical properties (compressive, flexural, and tensile strength), and for microstructure properties (SEM, EDX, and TGA/DTG). The optimum result in compressive strength was achieved in the mix M8 using 5% silica fume and 150 cycles of MW. For fresh properties, the mix M4 using 150 cycles without SF had the workability enhanced by 11% compared to the control mix, and SEM and EDX tests indicated that SCC mixes prepared with MW had more C-S-H, less CH, and were denser. In addition, TGA/DTG analysis showed that the rate of hydration of mix M8 was reached by 61% at 28 days. K EYWORDS . Self-Compacting concrete; Sustainable concrete; Magnetic water; Rate of hydration.

Citation: ELShami, A.A., Essam, Yousry, ES. M. N., Improvement of hydration products for self-compacting concrete by using magnetized water, Frattura ed Integrità Strutturale, 61 (2021) 352-371.

Received: 12.04.2022 Accepted: 07.06.2022 Online first: 09.06.2022 Published: 01.07.2022

Copyright: © 2022 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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