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Lubelli, B. (author), Nijland, T.G. (author), Van Hees, R.P.J. (author)Lime mortars have, up to a certain extent, a self-healing capacity which may contribute to their durability. Self-healing in lime mortars consists of a process of dissolution, transport and re-precipitation of calcium compounds to heal cracks and fissures. The spontaneous occurrence of self-healing in lime-based mortars is a well known...journal article 2011
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Lv, Leyang (author), Schlangen, E. (author), Yang, Z. (author), Xing, Feng (author)Self-healing cementitious materials containing a microencapsulated healing agent are appealing due to their great application potential in improving the serviceability and durability of concrete structures. In this study, poly(phenol-formaldehyde) (PF) microcapsules that aim to provide a self-healing function for cementitious materials were...journal article 2016
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Tabakovic, A. (author), Braak, Dirk (author), van Gerwen, Mark (author), Copuroglu, Oguzhan (author), Post, W. (author), Garcia, Santiago J. (author), Schlangen, E. (author)This article presents development of a novel self-healing technology for asphalt pavements, where asphalt binder rejuvenator is encapsulated within the compartmented alginate fibres. The key objective of the study was to optimise the compartmented alginate fibre design, i.e., maximising amount of rejuvenator encapsulated within the fibre. The...journal article 2017
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Tabakovic, A. (author), Schuyffel, L.S. (author), Karač, Aleksandar (author), Schlangen, E. (author)This paper explores the potential methods for evaluating a healing system for asphalt pavements. The healing system under investigation involves compartmented calcium-alginate fibres encapsulating an asphalt binder healing agent (rejuvenator). This system presents a novel method of incorporating rejuvenators into asphalt pavement mixtures....journal article 2017
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Post, W. (author), Kersemans, M. (author), Solodov, I. (author), Van Den Abeele, K. (author), Garcia, Santiago J. (author), van der Zwaag, S. (author)A comparative study is performed on the monitoring of delamination healing in CFRP-ionomer sandwich composites by non-destructive techniques and destructive compression testing. Artificial delaminations of various areal dimensions and nature were introduced during production of the composites. The extent of the delamination and the healing...journal article 2017
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Post, W. (author), Cohades, A. (author), Michaud, V (author), van der Zwaag, S. (author), Garcia, Santiago J. (author)We report the development of an intrinsic healing glass fibre reinforced polymer (GFRP) composite based on a disulphide-containing organic-inorganic thermoset matrix. Thermomechanical experiments showed that the newly developed matrix has a combination of a Young's modulus value in the range of (800–1200 MPa), the ability to multiple...journal article 2017
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Grande, A.M. (author), Martin, R.P. (author), Odriozola, I (author), van der Zwaag, S. (author), Garcia, Santiago J. (author)The macroscopic interfacial healing behaviour in a series of urea-urethane networks as function of the hydrogen bonds and disulphides content is presented. The polymers were prepared with different crosslinking densities but with the same amount of dynamic covalent bonds (disulphide linkages). Tensile and fracture measurements were adopted to...journal article 2017
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Farle, A.M. (author), Krishnasamy, J. (author), Turteltaub, S.R. (author), Kwakernaak, C. (author), van der Zwaag, S. (author), Sloof, W.G. (author)A wedge loaded testing methodology to determine the fracture energy and strength of (semi-) brittle (metallo-)ceramics is presented. The methodology combines a tailored specimen geometry and a comprehensive finite element analysis based on cohesive zone modelling. The use of a simulation-based approach to extract both fracture strength and...journal article 2018
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Boatemaa, L. (author), van der Zwaag, S. (author), Sloof, W.G. (author)This work explores the possibility of using embedded micron-sized Ti particles to heal surface cracks in alumina and to unravel the evolution of the crack filling process in case of pure solid-state oxidation reactions. The oxidation kinetics of the Ti particles is studied and the results are applied in a simple model for crack-gap filling....journal article 2018
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van Dijk, N.H. (author), van der Zwaag, S. (author)In comparison to other materials, in metals and metallic systems self-healing of cracks and crack-initiating defects is difficult to achieve due to the fact the solute atoms that act as healing agents are relatively small and generally have a relatively low mobility at the prevailing operating temperatures. In this review, the scientifically...journal article 2018
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Xu, S. (author), Tabakovic, A. (author), Schlangen, E. (author), Liu, X. (author)Researchers have demonstrated that the rejuvenator encapsulation method is a promising autonomic self-healing approach for asphalt pavements, where by the self-healing system improves the healing capacity of an asphalt pavement mix. However, potentially high environmental risk via leaching of hazardous chemicals such as melamine formaldehyde...journal article 2018
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van Breugel, K. (author)Models play a vital role in science and technology and in the evolution of modern societies. They are used for describing processes and mechanisms, experimental observations, analyses and predictions. In spite of the fact that models are a reduction of reality, the achievements of modern societies are impressive and would have been...journal article 2018
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Koleva, D.A. (author)The corrosion of reinforced steel, and subsequent reinforced concrete degradation, is a major concern for infrastructure durability. New materials with specific, tailor-made properties or the establishment of optimum construction regimes are among the many approaches to improving civil structure performance. Ideally, novel materials would...journal article 2018
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Saini, Vimal (author), von Tapavicza, Max (author), Eloo, Christina (author), Braesch, Katrin (author), Wack, Holger (author), Nellesen, Anke (author), Schmidt, Annette M. (author), Garcia, Santiago J. (author)Superabsorbent polymers (SAPs) are well known for their ability to absorb and hold high water amounts accompanied by a high volume expansion. In this work we show the benefits of this underlying property of SAPs to induce underwater crack closure with subsequent barrier restoration in damaged protective coatings. For the proof of concept,...journal article 2018
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Fang, H. (author), Szymanski, N. (author), Versteylen, C.D. (author), Cloetens, P. (author), Kwakernaak, C. (author), Sloof, W.G. (author), Tichelaar, F.D. (author), Balachandran, S. (author), Herbig, M. (author), Brück, E.H. (author), van der Zwaag, S. (author), van Dijk, N.H. (author)When metals are mechanically loaded at elevated temperatures for extended periods of time, creep damage will occur in the form of cavities at grain boundaries. In the present experiments it is demonstrated that in binary iron-tungsten alloys creep damage can be self healed by selective precipitation of a W-rich phase inside these cavities. Using...journal article 2019
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Xu, S. (author), Liu, X. (author), Tabaković, Amir (author), Schlangen, E. (author)Improving the healing capacity of asphalt is proving to be an effective method to prolong the service life of an asphalt pavement. The calcium alginate capsules encapsulating rejuvenator have been developed and proved to provide successful localized crack healing in asphalt mastic. However, it is not known whether this self-healing asphalt...journal article 2019
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Md Yunus, Balqis (author), Schlangen, E. (author), Jonkers, H.M. (author)This paper investigates the effects of alkaliphilic spore-forming bacteria of the genus Bacillus on the compressive strength of the mortar cube and the healing capacity of the bacteria as healing agent on mortar containing crack. The experiments were carried out using cube test, stereomicroscopy and environmental scanning electron microscopy ...journal article 2019
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Wu, Dequan (author), Zhang, D. (author), Ye, Yuwei (author), Ma, Lingwei (author), Minhas, Badar (author), Liu, Bei (author), Terryn, H.A. (author), Mol, J.M.C. (author), Li, Xiaogang (author)Recently, lubricant-infused surfaces (LIS) have emerged as a prominent class of surface technology for antifouling, anti-icing and anticorrosion applications. However, long-term corrosion exposure and mechanical damages may deteriorate the practical performance of LIS during application. In this study, a robust LIS was fabricated by the...journal article 2019
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Haddadi, S. (author), Ramazani, A. (author), Mahdavian, M. (author), Taheri, P. (author), Mol, J.M.C. (author), Gonzalez Garcia, Y. (author)The ability of an active protective organic coating to restore its protection functionality in case of a coating defect is of pivotal importance to ensure durable performance under demanding corrosive conditions. In this paper, a self-healing epoxy system is fabricated by separate encapsulation of epoxy and polyamine in carbon hollow spheres ...journal article 2019
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Nozahic, F. (author), Carabat, A.L. (author), Mao, W. (author), Monceau, D. (author), Estournes, C. (author), Kwakernaak, C. (author), van der Zwaag, S. (author), Sloof, W.G. (author)Recently MoSi<sub>2</sub> sacrificial particles embedded in yttria partially stabilized zirconia (YPSZ)have been proposed as attractive healing agents to realize significant extension of the lifetime of the thermally loaded structures. Upon local fracture of the YPSZ, the embedded healing particles in the path and in the vicinity of the crack...journal article 2019