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Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete

Mohamed Abubakar Ali Orcid Logo, Christoph Tomann Orcid Logo, Fadi Aldakheel Aldakheel, Markus Mahlbacher Orcid Logo, Nima Noii Orcid Logo, Nadja Oneschkow Orcid Logo, Karl-Heinz Drake, Ludger Lohaus Orcid Logo, Peter Wriggers Orcid Logo, Michael Haist Orcid Logo

Materials, Volume: 15, Issue: 3, Start page: 1025

Swansea University Author: Fadi Aldakheel Aldakheel

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DOI (Published version): 10.3390/ma15031025

Abstract

The influence of a wet environment on the fatigue behaviour of high-strength concrete has become more important in recent years with the expansion of offshore wind energy systems. According to the few investigations documented in the literature, the fatigue resistance of specimens submerged in water...

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Published in: Materials
ISSN: 1996-1944
Published: MDPI AG 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa59278
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However, it is still not clear how the wet environment and the moisture content in concrete influence its fatigue behaviour and which damage mechanisms are involved in the deterioration process. Here the results of a joint project are reported, in which the impact of moisture content in concrete on fatigue deterioration are investigated experimentally and numerically. Aside from the number of cycles to failure, the development of stiffness and acoustic emission (AE) hits are analysed as damage inductors and discussed along with results of microstructural investigations to provide insights into the degradation mechanisms. Subsequently, an efficient numeric modelling approach to water-induced fatigue damage is presented. The results of the fatigue tests show an accelerated degradation behaviour with increasing moisture content of the concrete. 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spelling 2022-05-27T10:58:49.8256426 v2 59278 2022-01-31 Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete bb7431e24b5e9e843b3718eb09b49d2e Fadi Aldakheel Aldakheel Fadi Aldakheel Aldakheel true false 2022-01-31 The influence of a wet environment on the fatigue behaviour of high-strength concrete has become more important in recent years with the expansion of offshore wind energy systems. According to the few investigations documented in the literature, the fatigue resistance of specimens submerged in water is significantly lower compared to that of specimens in dry conditions. However, it is still not clear how the wet environment and the moisture content in concrete influence its fatigue behaviour and which damage mechanisms are involved in the deterioration process. Here the results of a joint project are reported, in which the impact of moisture content in concrete on fatigue deterioration are investigated experimentally and numerically. Aside from the number of cycles to failure, the development of stiffness and acoustic emission (AE) hits are analysed as damage inductors and discussed along with results of microstructural investigations to provide insights into the degradation mechanisms. Subsequently, an efficient numeric modelling approach to water-induced fatigue damage is presented. The results of the fatigue tests show an accelerated degradation behaviour with increasing moisture content of the concrete. Further, it was found that the AE hits of specimens submerged in water occur exclusively close to the minimum stress level in contrast to specimens subjected to dry conditions, which means that additional damage mechanisms are acting with increasing moisture content in the concrete. Journal Article Materials 15 3 1025 MDPI AG 1996-1944 high-strength concrete, moisture content, fatigue deterioration, water-induced degradation mechanisms, acoustic emissions analysis, phase-field approach, porous media theory, microscopic material model 28 1 2022 2022-01-28 10.3390/ma15031025 COLLEGE NANME COLLEGE CODE Swansea University This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—Project numbers (353757395) (HA 7917/7-2 | LO 751/22-2 | WR 19/58-2) within the Priority Programme 2020 ‘Cyclic Deterioration of High-Performance Concrete in an ExperimentalVirtual Lab'. 2022-05-27T10:58:49.8256426 2022-01-31T15:26:22.5545888 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Mohamed Abubakar Ali 0000-0003-2490-2722 1 Christoph Tomann 0000-0002-9649-9517 2 Fadi Aldakheel Aldakheel 3 Markus Mahlbacher 0000-0002-4844-3543 4 Nima Noii 0000-0002-8358-7745 5 Nadja Oneschkow 0000-0002-4037-3464 6 Karl-Heinz Drake 7 Ludger Lohaus 0000-0001-9031-4537 8 Peter Wriggers 0000-0002-2676-1145 9 Michael Haist 0000-0002-3827-3915 10 59278__22255__14caa20acb3649f99460a3457dbd73c1.pdf materials-15-01025.pdf 2022-01-31T15:26:22.5542232 Output 3656217 application/pdf Version of Record true This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited true eng https://creativecommons.org/licenses/by/4.0/
title Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete
spellingShingle Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete
Fadi Aldakheel Aldakheel
title_short Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete
title_full Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete
title_fullStr Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete
title_full_unstemmed Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete
title_sort Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete
author_id_str_mv bb7431e24b5e9e843b3718eb09b49d2e
author_id_fullname_str_mv bb7431e24b5e9e843b3718eb09b49d2e_***_Fadi Aldakheel Aldakheel
author Fadi Aldakheel Aldakheel
author2 Mohamed Abubakar Ali
Christoph Tomann
Fadi Aldakheel Aldakheel
Markus Mahlbacher
Nima Noii
Nadja Oneschkow
Karl-Heinz Drake
Ludger Lohaus
Peter Wriggers
Michael Haist
format Journal article
container_title Materials
container_volume 15
container_issue 3
container_start_page 1025
publishDate 2022
institution Swansea University
issn 1996-1944
doi_str_mv 10.3390/ma15031025
publisher MDPI AG
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description The influence of a wet environment on the fatigue behaviour of high-strength concrete has become more important in recent years with the expansion of offshore wind energy systems. According to the few investigations documented in the literature, the fatigue resistance of specimens submerged in water is significantly lower compared to that of specimens in dry conditions. However, it is still not clear how the wet environment and the moisture content in concrete influence its fatigue behaviour and which damage mechanisms are involved in the deterioration process. Here the results of a joint project are reported, in which the impact of moisture content in concrete on fatigue deterioration are investigated experimentally and numerically. Aside from the number of cycles to failure, the development of stiffness and acoustic emission (AE) hits are analysed as damage inductors and discussed along with results of microstructural investigations to provide insights into the degradation mechanisms. Subsequently, an efficient numeric modelling approach to water-induced fatigue damage is presented. The results of the fatigue tests show an accelerated degradation behaviour with increasing moisture content of the concrete. Further, it was found that the AE hits of specimens submerged in water occur exclusively close to the minimum stress level in contrast to specimens subjected to dry conditions, which means that additional damage mechanisms are acting with increasing moisture content in the concrete.
published_date 2022-01-28T04:16:27Z
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score 11.035874

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