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Título: | Experimental characterization of the self-healing capacity of cement based materials and its effects on the material performance: A state of the art report by COST Action SARCOS WG2 |
Autor: | Ferrara, Liberato; Mullem, Tim van; Alonso, M. Cruz CSIC ORCID ; Antonaci, Paola; Borg, Ruben Paul; Cuenca, Estefania; Jefferson, Tony; Ng, Pui-Lam; Peled, Alba; Roig-Flores, M. CSIC ORCID; Sánchez Moreno, Mercedes CSIC ORCID; Schroefl, Christof; Serna, Pedro CSIC ORCID; Snoeck, Didier; Tulliani, Jean-Marc; Belie, Nele de | Palabras clave: | Self-healing Cementitious materials Test-methods Durability Properties Mechanical properties Self-healing products Field evaluation |
Fecha de publicación: | 2018 | Editor: | Elsevier | Citación: | Construction and Building Materials 167: 115-142 (2018) | Resumen: | Heuristically known at least since the first half of XIX century, the self-healing capacity of cement-based materials has been receiving keen attention from the civil engineering community worldwide in the last decade. As a matter of fact, stimulating and/or engineering the aforementioned functionality via tailored addition and technologies, in order to make it more reliable in an engineering perspective, has been regarded as a viable pathway to enhance the durability of reinforced concrete structures and contribute to increase their service life. Research activities have provided enlightening contributions to understanding the mechanisms of crack self-sealing and healing and have led to the blooming of a number of self-healing stimulating and engineering technologies, whose effectiveness has been soundly proved in the laboratory and, in a few cases, also scaled up to field applications, with ongoing performance monitoring. Nonetheless, the large variety of methodologies employed to assess the effectiveness of the developed self-healing technologies makes it necessary to provide a unified, if not standardized, framework for the validation and comparative evaluation of the same self-healing technologies as above. This is also instrumental to pave the way towards a consistent incorporation of self-healing concepts into structural design and life cycles analysis codified approaches, which can only promote the diffusion of feasible and reliable self-healing technologies into the construction market. In this framework the Working Group 2 of the COST Action CA 15202 >Self-healing as preventive repair of concrete structures - SARCOS> has undertaken the ambitious task reported in this paper. As a matter of fact this state of the art provides a comprehensive and critical review of the experimental methods and techniques, which have been employed to characterize and quantify the self-sealing and/or self-healing capacity of cement-based materials, as well as the effectiveness of the different self-sealing and/or self-healing engineering techniques, together with the methods for the analysis of the chemical composition and intrinsic nature of the self-healing products. The review will also address the correlation, which can be established between crack closure and the recovery of physical/mechanical properties, as measured by means of the different reviewed tests. | Versión del editor: | https://doi.org/10.1016/j.conbuildmat.2018.01.143 | URI: | http://hdl.handle.net/10261/211536 | DOI: | 10.1016/j.conbuildmat.2018.01.143 | Identificadores: | doi: 10.1016/j.conbuildmat.2018.01.143 e-issn: 1879-0526 issn: 0950-0618 |
Aparece en las colecciones: | (IETCC) Artículos |
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WG2 STAR paper revised version.pdf | 3,13 MB | Adobe PDF | Visualizar/Abrir |
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