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Influence of Moisture Content and Wet Environment on the Fatigue Behaviour of High-Strength Concrete
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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ISSN: | 1996-1944 |
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2022
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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 |
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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 |
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Materials |
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MDPI AG |
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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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11.021648 |