A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Visualization and quantification of self-healing behaviors of microcracks in cement-based materials incorporating fluorescence-labeled self-healing microcapsules
Graphical abstract Display Omitted
Highlights Fluorescence-labeled self-healing microcapsules healed microcracks in cement-based materials. The visualization of healing path of microcracks inside the matrix was realized by using fluorescent microcapsule probe technique. The crack healing efficiency was quantified by the changes in the width and depth of microcracks. A new method to detect and heal the internal microcracks of the matrix was provided.
Abstract Fluorescence-labeled self-healing microcapsules demonstrate the excellent ability to heal microcracks, and can also visualize the healing process of microcracks. The healing process of internal and external microcracks was visualized and quantified with laser scanning confocal microscope (LSCM) and step profiler. When 3.0 wt% microcapsules were incorporated into cement-based materials, the strength recovery rate was the highest, reaching 35.8%, and the healing effect of external microcracks reached 19.2%. When microcracks appear inside the resin matrix, fluorescence-labeled self-healing microcapsules can not only detect the specific location of the microcracks but also repair them, and quantify the width of microcracks. The change in the pore structure of cement-based self-healing materials is mainly due to the release of core materials into the microcracks and pores, thereby achieving the healing effect. It provides a unique insight into the visualization and quantification of self-healing behaviors of microcracks.
Visualization and quantification of self-healing behaviors of microcracks in cement-based materials incorporating fluorescence-labeled self-healing microcapsules
Graphical abstract Display Omitted
Highlights Fluorescence-labeled self-healing microcapsules healed microcracks in cement-based materials. The visualization of healing path of microcracks inside the matrix was realized by using fluorescent microcapsule probe technique. The crack healing efficiency was quantified by the changes in the width and depth of microcracks. A new method to detect and heal the internal microcracks of the matrix was provided.
Abstract Fluorescence-labeled self-healing microcapsules demonstrate the excellent ability to heal microcracks, and can also visualize the healing process of microcracks. The healing process of internal and external microcracks was visualized and quantified with laser scanning confocal microscope (LSCM) and step profiler. When 3.0 wt% microcapsules were incorporated into cement-based materials, the strength recovery rate was the highest, reaching 35.8%, and the healing effect of external microcracks reached 19.2%. When microcracks appear inside the resin matrix, fluorescence-labeled self-healing microcapsules can not only detect the specific location of the microcracks but also repair them, and quantify the width of microcracks. The change in the pore structure of cement-based self-healing materials is mainly due to the release of core materials into the microcracks and pores, thereby achieving the healing effect. It provides a unique insight into the visualization and quantification of self-healing behaviors of microcracks.
Visualization and quantification of self-healing behaviors of microcracks in cement-based materials incorporating fluorescence-labeled self-healing microcapsules
Wang, Xingang (author) / Li, Yujie (author) / Zhang, Chenyang (author) / Zhang, Xuanzhe (author)
2021-11-10
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2013