Experimental investigation on mode II fracture performance of old-new concrete
The old-new concrete interface is the weakest part in the composite structure, and there are a large number of microcracks on the interface. In order to study the mode II fracture performance of the bonding surface of old-new concrete, the effect of planting rebar and basalt fiber is investigated. N...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2022-09-01
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| Series: | Archives of Civil Engineering |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/124528/PDF/art28_corr.pdf |
| _version_ | 1811181596060942336 |
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| author | Shuang Liu Zhenwu Shi Tao Jiang Huili Wang |
| author_facet | Shuang Liu Zhenwu Shi Tao Jiang Huili Wang |
| author_sort | Shuang Liu |
| collection | DOAJ |
| description | The old-new concrete interface is the weakest part in the composite structure, and there are a large number of microcracks on the interface. In order to study the mode II fracture performance of the bonding surface of old-new concrete, the effect of planting rebar and basalt fiber is investigated. Nine Z-shaped old-new concrete composite specimens with initial cracks are made. Nine shear fracture load-displacement curves are obtained, and the failure process and interface fracture are discussed. On this basis, the mode II fracture toughness and fracture energy are obtained. The regression equations for fracture toughness and fracture energy are deduced with analysis of variance (ANOVA). The results show that fracture toughness and fracture energy increase with the increase of planting rebar number and basalt fiber content. With the increase of the planting rebar number, mode II fracture toughness and fracture energy increase more significantly. Planting rebar is the major factor for mode II fracture performance. |
| first_indexed | 2024-04-11T09:20:07Z |
| format | Article |
| id | doaj.art-2b6c74787ae74f258ddb2ad41a46dba6 |
| institution | Directory Open Access Journal |
| issn | 1230-2945 2300-3103 |
| language | English |
| last_indexed | 2024-04-11T09:20:07Z |
| publishDate | 2022-09-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Civil Engineering |
| spelling | doaj.art-2b6c74787ae74f258ddb2ad41a46dba62022-12-22T04:32:13ZengPolish Academy of SciencesArchives of Civil Engineering1230-29452300-31032022-09-01vol. 68No 3469480https://doi.org/10.24425/ace.2022.141897Experimental investigation on mode II fracture performance of old-new concreteShuang Liu0Zhenwu Shi1Tao Jiang2Huili Wang3School of Civil Engineering, Northeast Forestry University, 150040 Harbin, ChinaSchool of Civil Engineering, Northeast Forestry University, 150040 Harbin, ChinaNational & Local Joint Engineering Laboratory of Bridge and Tunnel Technology, Dalian University of Technology, 116023 Dalian, ChinaNational & Local Joint Engineering Laboratory of Bridge and Tunnel Technology, Dalian University of Technology, 116023 Dalian, ChinaThe old-new concrete interface is the weakest part in the composite structure, and there are a large number of microcracks on the interface. In order to study the mode II fracture performance of the bonding surface of old-new concrete, the effect of planting rebar and basalt fiber is investigated. Nine Z-shaped old-new concrete composite specimens with initial cracks are made. Nine shear fracture load-displacement curves are obtained, and the failure process and interface fracture are discussed. On this basis, the mode II fracture toughness and fracture energy are obtained. The regression equations for fracture toughness and fracture energy are deduced with analysis of variance (ANOVA). The results show that fracture toughness and fracture energy increase with the increase of planting rebar number and basalt fiber content. With the increase of the planting rebar number, mode II fracture toughness and fracture energy increase more significantly. Planting rebar is the major factor for mode II fracture performance.https://journals.pan.pl/Content/124528/PDF/art28_corr.pdfnew-old concreteplanting rebarbasalt fibermode ii fracturefracture toughnessfracture energy |
| spellingShingle | Shuang Liu Zhenwu Shi Tao Jiang Huili Wang Experimental investigation on mode II fracture performance of old-new concrete Archives of Civil Engineering new-old concrete planting rebar basalt fiber mode ii fracture fracture toughness fracture energy |
| title | Experimental investigation on mode II fracture performance of old-new concrete |
| title_full | Experimental investigation on mode II fracture performance of old-new concrete |
| title_fullStr | Experimental investigation on mode II fracture performance of old-new concrete |
| title_full_unstemmed | Experimental investigation on mode II fracture performance of old-new concrete |
| title_short | Experimental investigation on mode II fracture performance of old-new concrete |
| title_sort | experimental investigation on mode ii fracture performance of old new concrete |
| topic | new-old concrete planting rebar basalt fiber mode ii fracture fracture toughness fracture energy |
| url | https://journals.pan.pl/Content/124528/PDF/art28_corr.pdf |
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