Microscopic Tests on Evaluation of Self-Healing Efficiency in Cementitious Materials with a Novel Self-Healing System
| Autor: | Feng Xing, Ning Xu Han, Zhen Hong Yang, Xianfeng Wang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mechanics of Materials Mechanical Engineering Self-healing 021105 building & construction 0211 other engineering and technologies General Materials Science 02 engineering and technology Cementitious Composite material 021001 nanoscience & nanotechnology 0210 nano-technology Condensed Matter Physics |
| Zdroj: | Materials Science Forum. 996:104-109 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.996.104 |
| Popis: | In this study, Na2CO3 solution as a self-healing agent was impregnated in LWA for autonomic self-healing on cracked cementitious material. The results showed that under the joint action of expansive agent, crystalline additive, phosphate and carbonate, the crack area showed a high self-healing efficiency (close to 70%) after curing in the still water 28d. SEM-EDS test results showed that in addition to ettringite and C-S-H/C-A-S-H, there was also a large amount of CaCO3 crystal in the depths of the crack. |
| Databáze: | OpenAIRE |
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