Non-destructive testing techniques to evaluate the healing efficiency of self-healing concrete at lab-scale

Elke Gruyaert, J. Feiteira , N de Belie, F. Malm, M. Nahm, C. U. Grosse, E. Tziviloglou, E. Schlangen, E. Tsangouri

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

4 Citations (Scopus)

Abstract

Within the European FP7 project HEALCON, Non-Destructive Testing (NDT) and monitoring techniques are developed and combined to characterize the effects of self-healing mechanisms in small and full-size specimens. In the first stage, healing mechanisms were evaluated at lab-scale. Specimens containing encapsulated polymer precursors were cracked and reloaded after the healing period. During loading, healing and reloading, NDT techniques (acoustic emission analysis, vibration analysis and ultrasonic measurement) were applied to help understanding the cracking behavior, capsule breakage and healing efficiency. Moreover, the effect of the flexibility of the polymeric healing agent on the crack re-opening during reloading was investigated on cracked and healed mortar specimens, using acoustic emission and digital image correlation techniques. The results show the applicability of NDT methods to evaluate the self-healing efficiency for small specimens. Comparing the NDT techniques, some of them (e.g. ultrasound) seem to be good candidates for in situ monitoring of the healing efficiency.

Original languageEnglish
Title of host publicationEmerging Technologies in Non-Destructive Testing VI - Proceedings of the 6th International Conference on Emerging Technologies in Nondestructive Testing, ETNDT 2016
EditorsS. Vanlanduit, T.P. Philippidis , A. Anastasopoulos, D.G. Aggelis, D. Van Hemelrijck
PublisherCRC Press / Balkema - Taylor & Francis Group
Pages227-233
Number of pages7
ISBN (Print)9781138028845
Publication statusPublished - 2016
Event6th International Conference on Emerging Technologies in Nondestructive Testing - Brussels, Belgium
Duration: 27 May 201529 May 2015
Conference number: 6

Conference

Conference6th International Conference on Emerging Technologies in Nondestructive Testing
Abbreviated title ETNDT 2016
CountryBelgium
CityBrussels
Period27/05/1529/05/15

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