Study on the repair effect of cement-based self-healing microcapsules under different curing conditions

DOI

10.2991/978-94-6463-316-0_13How to use a DOI?

Keywords

Cement-based material; microcapsule; self-repair; mechanical property

Abstract

Microcapsules were prepared by in situ polymerization with an average particle size of 198μm. The self-healing properties and mechanical properties of microcapsule cement sand adhesive specimen were measured by the strength recovery rate. And the self-healing properties of self-healing cement substrates with different microcapsule contents (0%, 1.5%, 3%, 4.5% and 6% of cement mass) under dry-culture and wet-culture restoration and curing conditions were studied. The results show that under the conditions of dry and wet culture, the flexural strength and compressive strength of the specimen decrease with the increase of microcapsule content; The strength recovery rate of dry culture specimens under different microcapsule dosages was 106.60%~124.29%, and the strength recovery rate of wet culture specimens was 98.74%~110.12%, and the wet culture repair effect was significantly lower than that of dry culture self-repair effect. When the amount of microcapsules is small, the self-healing performance of self-healing slurry under dry and wet culture shows the same law, and the performance is improved with the increase of the dosage, and the peak is reached when the dosage is 4.5%, which is the optimal dosage, and the repair effect is subsequently reduced.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Chenghui Wu
AU  - Junhu Li
AU  - Yinghao Yang
AU  - Hang Lei
PY  - 2023
DA  - 2023/12/14
TI  - Study on the repair effect of cement-based self-healing microcapsules under different curing conditions
BT  - Proceedings of the 2023 5th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2023)
PB  - Atlantis Press
SP  - 115
EP  - 123
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-316-0_13
DO  - 10.2991/978-94-6463-316-0_13
ID  - Wu2023
ER  -