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Title: | 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 |
Authors: | Ferrara, Liberato Van Mullem, Tim Cruz Alonso, Maria Antonaci, Paola Borg, Ruben Paul Cuenca, Estefanía Jefferson, Anthony Peled, Alva Ng, Pui-Lam Roig-Flores, Marta Sanchez, Mercedez Serna, Pedro Snoeck, Didier Schroefl, Christof Tulliani, Jean Marc Van Mullem, Tim De Belie, Nele |
Keywords: | Building materials Buildings -- Design and construction Cement -- Additives Civil engineering |
Issue Date: | 2018 |
Publisher: | Elsevier |
Citation: | Ferrara, L., Van Mullem, T., Alonso, M. C., Antonaci, P., Borg, R. P., Cuenca, E., ... & De Belie, N. (2018). 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. Construction and Building Materials, 167, 115-142. |
Abstract: | 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. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/84539 |
Appears in Collections: | Scholarly Works - FacBenCPM |
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1-s2.0-S095006181830165X-main.pdf Restricted Access | 4.71 MB | Adobe PDF | View/Open Request a copy |
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