Theoretical and Experimental Research of Ultra-High-Performance Concrete Tensile Behaviour Based on Micro-Analysis
The cracking resistance and durability of the ultra-high-performance concrete (UHPC) structure are directly affected by its tensile behaviour. A micro-analysis method was established to study the tensile behaviour of the UHPC before the appearance of visible cracks. The cooperative characteristic of...
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| Format: | Article |
| Language: | English |
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Riga Technical University Press
2023-06-01
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| Series: | The Baltic Journal of Road and Bridge Engineering |
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| Online Access: | https://bjrbe-journals.rtu.lv/article/view/7717 |
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| _version_ | 1846092214212493312 |
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| author | Liu Xinyi Zhang Rongling Duan Yun |
| author_facet | Liu Xinyi Zhang Rongling Duan Yun |
| author_sort | Liu Xinyi |
| collection | DOAJ |
| description | The cracking resistance and durability of the ultra-high-performance concrete (UHPC) structure are directly affected by its tensile behaviour. A micro-analysis method was established to study the tensile behaviour of the UHPC before the appearance of visible cracks. The cooperative characteristic of the steel fibre and the cement matrix was taken as a research focus of the micro-analysis method. The random distribution of steel fibre was considered as normal distribution. Based on the micro-analysis method, the tensile behaviour of UHPC was divided into the elastic stage and micro-damage development stage. Other data sourced elsewhere were used to verify the feasibility of the micro-analysis method and the necessary data were tested using pure bending specimens to verify the theoretical model. The results show that the working mechanism of inner steel fibre can be described by the micro-analysis method. The bending test results of the UHPC at the elastic and the micro-damage development stage match the theoretical model. The tensile behaviour of the UHPC is dominated by the inner steel fibre and the contribution of the cement matrix can be ignored. A bilinear model is proposed to describe the tensile constitutive of UHPC before the appearance of visible cracks, and the limitations of each stage are 8.85 MPa and 12.36 MPa. |
| format | Article |
| id | doaj-art-b6fe25de6ccb4b5e8c582211bbac1952 |
| institution | Kabale University |
| issn | 1822-427X 1822-4288 |
| language | English |
| publishDate | 2023-06-01 |
| publisher | Riga Technical University Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj-art-b6fe25de6ccb4b5e8c582211bbac19522025-01-02T21:24:26ZengRiga Technical University PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882023-06-01182789810.7250/bjrbe.2023-18.5993354Theoretical and Experimental Research of Ultra-High-Performance Concrete Tensile Behaviour Based on Micro-AnalysisLiu Xinyi0Zhang Rongling1Duan Yun2National and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control, Lanzhou Jiaotong University, Lanzhou 730070, PR ChinaNational and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control, Lanzhou Jiaotong University, Lanzhou 730070, PR ChinaNational and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control, Lanzhou Jiaotong University, Lanzhou 730070, PR ChinaThe cracking resistance and durability of the ultra-high-performance concrete (UHPC) structure are directly affected by its tensile behaviour. A micro-analysis method was established to study the tensile behaviour of the UHPC before the appearance of visible cracks. The cooperative characteristic of the steel fibre and the cement matrix was taken as a research focus of the micro-analysis method. The random distribution of steel fibre was considered as normal distribution. Based on the micro-analysis method, the tensile behaviour of UHPC was divided into the elastic stage and micro-damage development stage. Other data sourced elsewhere were used to verify the feasibility of the micro-analysis method and the necessary data were tested using pure bending specimens to verify the theoretical model. The results show that the working mechanism of inner steel fibre can be described by the micro-analysis method. The bending test results of the UHPC at the elastic and the micro-damage development stage match the theoretical model. The tensile behaviour of the UHPC is dominated by the inner steel fibre and the contribution of the cement matrix can be ignored. A bilinear model is proposed to describe the tensile constitutive of UHPC before the appearance of visible cracks, and the limitations of each stage are 8.85 MPa and 12.36 MPa.https://bjrbe-journals.rtu.lv/article/view/7717bilinear modelmicro-analysis methodnon-uniform distributionsteel fibresteel fibre reinforced uhpcultra-high-performance concrete |
| spellingShingle | Liu Xinyi Zhang Rongling Duan Yun Theoretical and Experimental Research of Ultra-High-Performance Concrete Tensile Behaviour Based on Micro-Analysis The Baltic Journal of Road and Bridge Engineering bilinear model micro-analysis method non-uniform distribution steel fibre steel fibre reinforced uhpc ultra-high-performance concrete |
| title | Theoretical and Experimental Research of Ultra-High-Performance Concrete Tensile Behaviour Based on Micro-Analysis |
| title_full | Theoretical and Experimental Research of Ultra-High-Performance Concrete Tensile Behaviour Based on Micro-Analysis |
| title_fullStr | Theoretical and Experimental Research of Ultra-High-Performance Concrete Tensile Behaviour Based on Micro-Analysis |
| title_full_unstemmed | Theoretical and Experimental Research of Ultra-High-Performance Concrete Tensile Behaviour Based on Micro-Analysis |
| title_short | Theoretical and Experimental Research of Ultra-High-Performance Concrete Tensile Behaviour Based on Micro-Analysis |
| title_sort | theoretical and experimental research of ultra high performance concrete tensile behaviour based on micro analysis |
| topic | bilinear model micro-analysis method non-uniform distribution steel fibre steel fibre reinforced uhpc ultra-high-performance concrete |
| url | https://bjrbe-journals.rtu.lv/article/view/7717 |
| work_keys_str_mv | AT liuxinyi theoreticalandexperimentalresearchofultrahighperformanceconcretetensilebehaviourbasedonmicroanalysis AT zhangrongling theoreticalandexperimentalresearchofultrahighperformanceconcretetensilebehaviourbasedonmicroanalysis AT duanyun theoreticalandexperimentalresearchofultrahighperformanceconcretetensilebehaviourbasedonmicroanalysis |