Issue |
MATEC Web Conf.
Volume 378, 2023
SMARTINCS’23 Conference on Self-Healing, Multifunctional and Advanced Repair Technologies in Cementitious Systems
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Article Number | 02018 | |
Number of page(s) | 7 | |
Section | Self-Healing Cementitious Materials | |
DOI | https://doi.org/10.1051/matecconf/202337802018 | |
Published online | 28 April 2023 |
Self-healing of cement mortars based on fly ash and crystalline admixture
1
ADING AD Skopje, 1000 Skopje, Republic of North Macedonia
2
Ss. Cyril and Methodius University in Skopje, Faculty of Technology and Metallurgy, 1000 Skopje, Republic of North Macedonia
* Corresponding author: stefanovska@ading.com.mk
The actual study has followed the effect of fly ash and crystalline admixture on cement mortars' mechanical and self-healing properties. Three types of cementitious mortars composed of (i) 16 wt.% fly ash, (ii) crystalline admixture, and (iii) 16 wt.% fly ash and crystalline admixture were compared to the standard mortar (in compliance with EN 196-1). The capillary water absorption determined the sealing efficiency of the cracks over a period of time. The experimental results showed that by autogenous self-healing the standard mortar has a sealing efficiency of 40% after 28 days of treatment and 70% after 6 months of treatment, but the addition of fly ash and crystalline admixtures stimulated the autogenous self-healing. The best results showed the mortar (iii) containing 16 wt.% fly ash and crystalline admixture, where the sealing efficiency achieved 79% after 28 days of treatment and 98% after 6 months.
© The Authors, published by EDP Sciences, 2023
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