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Fracture toughness of cement paste assessed with micro-scratch and acoustic emission
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SYSNO ASEP 0579670 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Fracture toughness of cement paste assessed with micro-scratch and acoustic emission Author(s) Němeček, J. (CZ)
Čtvrtlík, Radim (FZU-D) RID, ORCID
Václavek, Lukáš (FZU-D) ORCID
Němeček, J. (CZ)Number of authors 4 Source Title Proceedings of the conference Local Mechanical Properties. - Warszawa : de Gruyter, 2022 / Hvizdoš P. ; Shepa I. ; Ondrejová K. ; Bureš R. ; Martin T. Pages s. 7-13 Number of pages 7 s. Publication form Online - E Action International Conference on Local Mechanical Properties /15./ Event date 11.05.2022 - 13.05.2022 VEvent location Košice Country SK - Slovakia Event type EUR Language eng - English Country PL - Poland Keywords scratch test ; acoustic emission ; fracture toughness ; cement paste ; microindentation Subject RIV JP - Industrial Processing OECD category Materials engineering Institutional support FZU-D - RVO:68378271 DOI 10.2478/pmp-2022-0002 Annotation Micro-scratch test was used to evaluate the fracture toughness of the main hydration products of ordinary Portland cement paste at the microscale. The evaluation was done with the aid of scanning electron microscopy and acoustic emission (AE) signals. Portlandite was found to be the only phase where AE detected elastic waves due to cracking during microindentation and micro-scratch test. Such behavior simplifies phase separation during the evaluation process of the micro-scratch test. The micro-scale fracture toughness results obtained from the tests were found in close agreement with other available experiments and models in the literature.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://sciendo.com/article/10.2478/pmp-2022-0002
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