<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>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.</p>
</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.

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

M.Sc., Ph.D. student, Luleå University of Technology

M.Sc., Ph.D., Assistant Professor, Lublin University of Technology

M.Sc., Ph.D., Associate Professor, Luleå University of Technology

M.Sc., Ph.D., Adjunct Professor LTU/Skanska Teknik AB, Luleå University of Technology

M.Sc., Ph.D., Professor, and Head of Subject, Luleå University of Technology

Nordic Concrete Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

This manuscript presents preliminary results on the cement paste potential, with and without carbon nanomaterials, to heal high-temperature cracks. Cement...

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

Published Online: Jan 14, 2023

Page range: 79 - 97

Received: Dec 28, 2022

Accepted: Dec 29, 2022

DOI: https://doi.org/10.2478/ncr-2022-0017

Keywords
self-healing, cement paste, nanomaterials, Multi-Wall Carbon Nanotubes, high temperature, microcracking, image analysis

© 2022 Magdalena Rajczakowska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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

Published Online: Jan 14, 2023

Page range: 79 - 97

Received: Dec 28, 2022

Accepted: Dec 29, 2022

DOI: https://doi.org/10.2478/ncr-2022-0017

Keywordsself-healing, cement paste, nanomaterials, Multi-Wall Carbon Nanotubes, high temperature, microcracking, image analysis

© 2022 Magdalena Rajczakowska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
self-healing, cement paste, nanomaterials, Multi-Wall Carbon Nanotubes, high temperature, microcracking, image analysis