Self-healing mortars based on hollow glass tubes and epoxy–amine systems |
| |
| Affiliation: | 1. School of Civil Engineering, Guangdong Province Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen 518060, PR China;2. Department of Civil and Environmental Engineering, Hong Kong University of Science & Technology, Clear Water Bay, Hong Kong, PR China;1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, 300072, China;2. School of Civil Engineering, Tianjin University, Tianjin, 300072, China;3. Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin, 300456, China;1. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry and Chemical Engineering, Sun Yat-Sen (Zhongshan) University, Guangzhou, 510275, China;2. Guangdong Provincial Public Laboratory of Analysis and Testing Technology, China National Analytical Center, Guangzhou, 510070, China;1. Magnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Structural Engineering and Architecture, Ghent University, Technologiepark Zwijnaarde 904, B-9052 Ghent, Belgium;2. Laboratory of Microbial Ecology and Technology, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium;3. Polymer Chemistry and Biomaterials Group, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Campus Sterre Building S4, Krijgslaan 281, B-9000 Ghent, Belgium;4. Centre for X-ray Tomography/PProGRess, Department Geology and Soil Science, Faculty of Sciences, Krijgslaan 281, S8, B-9000 Ghent, Belgium;5. Department of Mechanics of Materials and Constructions, Faculty of Engineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium;6. SIM vzw, Technologiepark Zwijnaarde 935, B-9052 Ghent, Belgium |
| |
| Abstract: | In the present work key parameters of different epoxy systems (such as viscosity and gel time) were evaluated to be used as healing agents when were included in a cement matrix. Epoxy systems were encapsulated in hollow glass tubes and were introduced in a mortar matrix. Samples were preloaded under three point bending in order to create a crack and release the healing system. After that, they were loaded to measure the residual strength and estimate the healing efficiency. The influence of temperature and the volume of the glass tubes were examined. Regarding the healing efficiency, a higher temperature led to an improvement of autogenous healing of the mortar matrix and a higher degree of crosslinking of the healing agent. For the studied systems, the use of glass tubes with smaller diameter containing the healing system seemed to be better in order to maintain the mechanical properties of the mortar-based composite. |
| |
| Keywords: | Self-healing Repair Hollow glass tubes Epoxy system |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
