Self-healing efficiency of cementitious materials containing tubular capsules filled with healing agent
Source abstract
Abstract
Abstract It has been estimated that, in Europe, 50% of the annual construction budget is spent on rehabilitation and repair of the existing structures [1] . Therefore, autonomous crack healing of concrete, a construction material that is highly susceptible to cracking, would be desirable. In this research, an encapsulated healing agent was embedded in the mortar matrix to obtain self-healing properties. Upon crack appearance, the capsules break and the healing agent is released, causing crack repair. By means of Computed Tomography and visual observation of the crack faces, filling of the cracks with healing agent was observed. It was seen that more than 50% of the original strength and stiffness could be regained after self-healing. It was also found that the water permeability could be reduced by a factor 102 to 104 due to autonomous crack healing. As a consequence, the proposed technique may be used for partial restoration of concrete properties after cracking.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microbial Applications in Construction Materials · Grouting, Rheology, and Soil Mechanics · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (22)
Show source-provided references
1. Cailleux E, Pollet V. Investigations on the development of self-healing properties in protective coatings for concrete and repair mortars. In: Proceedings of the second international conference on self-healing materials; 2009. p. 120.
2. Van der Zwaag S. An introduction to material design principles: damage prevention versus damage management. In: van der Zwaag S, editor. Self healing materials. An alternative approach to 20 centuries of materials science. Springer Netherlands: Springer series in materials science; 2007. p. 1–18.10.1007/978-1-4020-6250-6_1 ↗
3. Feasibility study of a passive smart self-healing cementitious composite10.1016/S1359-8368(98)00034-1 ↗
4. Dry C. Design of self-growing, self-sensing and self-repairing materials for engineering applications. In: Wilson AR, Asanuma H, editors. Proceedings of the society of photo-optical instrumentation engineers (SPIE); 2001. p. 23–29.10.1117/12.424430 ↗
5. Joseph C, Jefferson AD, Canoni MB. Issues relating to the autonomic healing of cementitious materials. In: Proceedings of the first international conference on self-healing materials; 2007. p. 1–8.
6. Development of self-healing system for concrete with selective heating around crack10.3151/jact.4.267 ↗
7. Implementation of self-healing concrete - Proof of concept
8. Fundamental study on development of intelligent concrete characterized by self-healing capability for strength
9. Three-part methylmethacrylate adhesive system as an internal delivery system for smart responsive concrete10.1088/0964-1726/5/3/007 ↗
10. Matrix cracking repair and filling using active and passive modes for smart timed release of chemicals from fibers into cement matrices10.1088/0964-1726/3/2/006 ↗
11. A comparison of bending strength between adhesive and steel reinforced concrete with steel only reinforced concrete10.1016/S0008-8846(03)00102-9 ↗
12. Electrical conductivity of asphalt mortar containing conductive fibers and fillers10.1016/j.conbuildmat.2009.06.014 ↗
13. Tan PS, Zhang MQ, Bhattacharyya D. Processing and performance of self-healing materials. In: IOP conference series: materials science and engineering; 2009.10.1088/1757-899X/4/1/012017 ↗
14. Mookhoek SD, Mayo SC, Hughes AE, Furman SA, Fischer HR, van der Zwaag S, Ludwig W. Using synchrotron X-ray micro tomography to quantitatively analyze fracture and healing processes in self-healing thermoplastics. In: Proceedings of the second international conference on self-healing materials; 2009.
15. Fabrication and oxygen permeability of gastight, macrovoid-free Ba0.5Sr0.5Co0.8Fe0.2O3−δ capillaries for high temperature gas separation10.1016/j.memsci.2009.10.030 ↗
16. NBN B 15-002: 1995. Eurocode 2: Berekeningen van constructies – Deel 1-1: Algemene regels en regels voor gebouwen.
17. Permeability of cracked concrete10.1007/BF02479629 ↗
18. Use of bacteria to repair cracks in concrete10.1016/j.cemconres.2009.08.025 ↗
19. UGCT: new X-ray radiography and tomography facility10.1016/j.nima.2007.05.099 ↗
20. Software tools for quantification of X-ray microtomography at the UGCT10.1016/j.nima.2007.05.073 ↗
21. VGStudio. .
22. Rasband WS. ImageJ. Bethesda, Maryland (USA, US): National Institutes of Health; 1997–2008. .