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Wiktor, V. (author), Sangadji, S. (author), Jonkers, H.M. (author), Schlangen, H.E.J.G. (author)Bacterially induced calcium carbonate precipitation has received considerable attention for its potential application in enforcing or repairing construction material. The mechanism of bacterially mediated calcite precipitation in those studies is primarily based on the enzymatic hydrolysis of urea. Besides calcite precipitation, this reaction...conference paper 2013
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Bernold, L. (author), Castel, A. (author)Abstract only.conference paper 2013
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Hövelmann, C.H. (author), Gold, B. (author), Brás, A. (author), Allgaier, J. (author), Pyckhout-Hintzen, W. (author), Wischnewski, A. (author), Richter, D. (author)Nature uses a combination of dynamic hydrogen bonds and static covalent bonds in e.g. the muscle sarcomer to achieve toughness in otherwise elastic materials. The dynamic bonds can open when a force is applied, thereby providing a stress-relieve mechanism to prevent rupturing of the covalent links. Upon release of external force the hydrogen...conference paper 2013
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Ducasse-Lapeyrusse, J. (author), Gagné, R. (author), Lors, C. (author), Damidot, D. (author)Bio-healing is a promising approach to enhancing natural self-healing and thus completely heal large micro-cracks (> 200 ?m) in cementitious materials. The aim of this research is to better understand bio-healing of cementitious materials in order to accelerate the healing kinetics and maximize sealing efficiency of large micro-cracks. The bio...conference paper 2013
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Litina, C. (author), Al-Tabbaa, A. (author)Aqueous cement suspensions without aggregates have been commonly applied as a remedial technique in structural and geotechnical applications, often comprising part of the permanent infrastructure. These suspensions derive their mechanical characteristics and properties through the same hydration processes and binding chemistry as concrete; thus...conference paper 2013
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Fan, S. (author), Li, M. (author)Concrete cracking is inevitable, and can be the result of one or a combination of factors such as dry shrinkage, thermal contraction, fatigue, and embedded steel corrosion. The presence of cracks leads to further deterioration, service life reduction of concrete infrastructure, and frequent maintenance and repairs. These challenges can be...conference paper 2013
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Olivier, K. (author), Darquennes, A. (author), Benboudjema, F. (author), Gagné, R. (author)In order to limit the release of CO2 produced in cement manufacturing, clinker (the major cement component) is often partially replaced by mineral admixtures like blastfurnace slag. The use of mineral admixtures presents different advantages such as the recycling of industrial waste and the improvement of different material properties ...conference paper 2013
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Lv, L.P. (author), Zhao, Y. (author), Vimalanandan, A. (author), Rohwerder, M. (author), Landfester, K. (author), Crespy, D. (author)Abstract only.conference paper 2013
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Speck, O. (author), Schlechtendahl, M. (author), Schmich, F. (author), Speck, T. (author)After an artificial injury in succulent leaves of Delosperma cooperi and Delosperma ecklonis rapid wound sealing by deformation of the entire leaf takes place within approximately 90 minutes. On the basis of comparative anatomical and biomechanical analyses of the closely related species conclusions can be drawn on necessary boundary conditions...conference paper 2013
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Duan, X. (author), Jia, D. (author), Yang, Z. (author), Zhou, Y. (author), Ouyang, J. (author), Sloof, W.G. (author), Van der Zwaag, S. (author)Abstract only.conference paper 2013
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Rao, J. (author), Jia, D. (author), Duan, X. (author), Yang, Z. (author), Zhou, Y. (author), Ouyang, J. (author), Sloof, W.G. (author), Van der Zwaag, S. (author)Abstract only.conference paper 2013
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Yoshioka, S. (author), Nakao, W. (author)Simple methodorogy to evaluate availability of self-healing agent have been established from the investigation on the relationship between oxidation behavior of self-healing agent and self-healing phenomena. The consistency of the established methodology was discussed by comparison in the lower bound of the available temperature range of mullite...conference paper 2013
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Latsuzbaia, R. (author), Negro, E. (author), Koper, G.J.M. (author)Platinum nanoparticles, which are used as catalysts in Proton Exchange Membrane Fuel Cells (PEMFC), tend to degrade after long-term operation. We discriminate the following mechanisms of the degradation: poisoning, migration and coalescence, dissolution, and electrochemical Ostwald ripening. There are two ways to tackle this problem. The first...conference paper 2013
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Lafont, U. (author), Van Zeijl, H.W. (author), Van der Zwaag, S. (author)While conventional self healing materials focus on the restoration of mechanical properties, newer generations of self healing materials focus on the restoration of other functional (i.e. non-mechanical) properties. Thermal conductivity is an example of an important functional property of a Thermal Interface Material (TIM) for LEDs and...conference paper 2013
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Prajer, M. (author), Wu, X. (author), Garcia Espallargas, S.J. (author), Van der Zwaag, S. (author)Polymers reinforced with high performance fibres are successfully replacing metal alloys in lightweight aircraft structures. A critical factor in structural design is the resistance of a structure to progressive damage which develops during its service time. The brittle nature of matrix cracking is the main source of composite failure initiating...conference paper 2013
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Liu, Z. (author), Besseling, N.A.M. (author), Mendes, E. (author), Picken, S.J. (author)Polyborosiloxanes (PBSs) are viscoelastic, transparent, colourless, self-healable polymer matrices, synthesized by reacting linear polydimethylsiloxanes (PDMSs) with boric acid (BA) above 150°C. BA takes part not only in cleaving the PDMS chains, but also contributes boronic-acid like moieties to the cleaved chain ends, which provide...conference paper 2013
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Coope, T. (author), Bond, I. (author), Trask, R. (author), Wass, D. (author)High performance, damage tolerant fibre reinforced polymer (FRP) composite materials are currently required to demonstrate no propagation of any sub-surface structural micro-cracking when under service load, thereby encouraging overdesign and limiting the inherent lightweight nature of such a material. By incorporating selfhealing...conference paper 2013
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Otsuka, H. (author), Imato, K. (author), Kanehara, T. (author), Irie, A. (author), Ohishi, T. (author), Takahara, A. (author)Covalent bonds with the ability to reach an equilibrium state between combination and dissociation under certain conditions have been studied, and systematic method for controlling the structures of compounds and polymers based on these reversible covalent bonds has been spotlighted as dynamic covalent chemistry. In the present study,...conference paper 2013
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Krelani, V. (author), Ferrara, L. (author)The presence of cracks may significantly affect the life-cycle of structures, as a results of its influence on the designed structural response vs. persistent or even severe accidental load and exposure conditions, when requested. Repairing damaged concrete in existing structures needs important investments to recover the pristine level of...conference paper 2013
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Palmese, G.R. (author), Pratama, P.A. (author), Peterson, A.M. (author), Sharifi, M. (author)Abstract only.conference paper 2013