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Is Cement Paste Modified with Carbon Nanomaterials Capable of Self-Repair after a Fire? Cover

Is Cement Paste Modified with Carbon Nanomaterials Capable of Self-Repair after a Fire?

Open Access
|Jan 2023

Abstract

This manuscript presents preliminary results on the cement paste potential, with and without carbon nanomaterials, to heal high-temperature cracks. Cement paste beams were subjected to thermal loading of 200°C and 400°C after 28 days of water curing. High temperature caused the formation of microcrack networks on the specimen’s surface. Self-healing was achieved by exposing the cracked samples to cyclic water immersion. The efficiency of the process was evaluated based on the crack closure and mechanical properties recovery after 24 days. The results indicated a distinct dependence of the healing on the loading temperature. Carbon nanotubes had a positive effect on self-repair efficiency.

DOI: https://doi.org/10.2478/ncr-2022-0017 | Journal eISSN: 2545-2819 | Journal ISSN: 0800-6377
Language: English
Page range: 79 - 97
Submitted on: Dec 28, 2022
Accepted on: Dec 29, 2022
Published on: Jan 14, 2023
Published by: Nordic Concrete Federation
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year

© 2023 Magdalena Rajczakowska, Maciej Szeląg, Karin Habermehl-Cwirzen, Hans Hedlund, Andrzej Cwirzen, published by Nordic Concrete Federation
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.