Global Journal of Researches in Engineering, E: Civil & Structural, Volume 23 Issue 2

© 2023. Wang Mingyuan, Tang Dyunyan, Rudnov Vasily Serrgeevich & Xiao Xinyuan. This research/review article is distributed under the terms of the Attribution-NonCommercial-NoDerivatives 4.0 International (CC BYNCND 4.0). You must give appropriate credit to authors and reference this article if parts of the article are reproduced in any manner. Applicable licensing terms are at https://creativecommons.org/licenses/by-nc-nd/4.0/. Global Journal of Researches in Engineering: E Civil And Structural Engineering Volume 23 Issue 2 Version 1.0 Year 2023 Type: Double Blind Peer Reviewed International Research Journal Publisher: Global Journals Online ISSN: 2249-4596 & Print ISSN: 0975-5861 Efficiency of Self-Healing Cementing Materials By Wang Mingyuan, Tang Dyunyan, Rudnov Vasily Serrgeevich & Xiao Xinyuan Ural Federal University Strictly as per the compliance and regulations of: Annotation- In order to meet the special requirements (for the strength and conductivity of concrete structures) that arise during the transmission of electricity to remote areas of the Russian Federation, a variant of using self-healing concrete is proposed. In this material, it is proposed to use microcapsules obtained by the physical method, consisting of sodium silicate and bentonite clay coated with ethyl cellulose with graphene. The mechanism of action of the capsule is as follows: after external mechanical destruction, access to graphene appears and it acts as a conductive medium, resulting in the cementing properties of the capsule core. In the course of the work, the optimal ratio of graphene and the capsule core was established, which was determined during a number of experiments and microstructure studies. The dependences of the compressive strength and conductivity of the composite on the graphene content in the capsule, the number of microcapsules in concrete and the time of strength gain were also revealed. In the experiments, the average size of microcapsules was 1.25 mm, the grain shape is predominantly spherical with a rough surface and dense structure. The optimal microcapsule content was 2% of the cement binder weight, which corresponds to 0.1% graphene oxide. Keywords: graphene; microcapsules; self-healing cementing materials, compressive strength; conductivity. GJRE-E Classification: ACM: D.2.8 EfficiencyofSelfHealingCementingMaterials