Average Fracture Energy for Crack Propagation in Postfire Concrete
Wedge-splitting tests of postfire concrete specimens were carried out in the present research to obtain the load-displacement curves. Ten temperatures varying from room temperature to 600°C were employed. In order to calculate the accurate fracture energy, the tails of load-displacement curves were...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2013/143208 |
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| _version_ | 1832560427075108864 |
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| author | Kequan Yu Jiangtao Yu Zhoudao Lu |
| author_facet | Kequan Yu Jiangtao Yu Zhoudao Lu |
| author_sort | Kequan Yu |
| collection | DOAJ |
| description | Wedge-splitting tests of postfire concrete specimens were carried out in the present research to obtain the load-displacement curves. Ten temperatures varying from room temperature to 600°C were employed. In order to calculate the accurate fracture energy, the tails of load-displacement curves were best fitted using exponential and power functions. Three fracture energy quantities (fracture energy GF, stable fracture energy GFS, and unstable fracture energy GFU) with their variation tendency and their mutual relationship were determined to predict energy consumption for the complete fracture propagation. Additionally, the stable fracture work WFS was also calculated. All these fracture parameters sustain an increase-decrease tendency which means that the fracture property of postfire concrete shares the same tendency. |
| format | Article |
| id | doaj-art-f7e34bab343440d1bbb26d602689125c |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-f7e34bab343440d1bbb26d602689125c2025-02-03T01:27:44ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422013-01-01201310.1155/2013/143208143208Average Fracture Energy for Crack Propagation in Postfire ConcreteKequan Yu0Jiangtao Yu1Zhoudao Lu2College of Civil Engineering, Tongji University, Shanghai 200092, ChinaCollege of Civil Engineering, Tongji University, Shanghai 200092, ChinaCollege of Civil Engineering, Tongji University, Shanghai 200092, ChinaWedge-splitting tests of postfire concrete specimens were carried out in the present research to obtain the load-displacement curves. Ten temperatures varying from room temperature to 600°C were employed. In order to calculate the accurate fracture energy, the tails of load-displacement curves were best fitted using exponential and power functions. Three fracture energy quantities (fracture energy GF, stable fracture energy GFS, and unstable fracture energy GFU) with their variation tendency and their mutual relationship were determined to predict energy consumption for the complete fracture propagation. Additionally, the stable fracture work WFS was also calculated. All these fracture parameters sustain an increase-decrease tendency which means that the fracture property of postfire concrete shares the same tendency.http://dx.doi.org/10.1155/2013/143208 |
| spellingShingle | Kequan Yu Jiangtao Yu Zhoudao Lu Average Fracture Energy for Crack Propagation in Postfire Concrete Advances in Materials Science and Engineering |
| title | Average Fracture Energy for Crack Propagation in Postfire Concrete |
| title_full | Average Fracture Energy for Crack Propagation in Postfire Concrete |
| title_fullStr | Average Fracture Energy for Crack Propagation in Postfire Concrete |
| title_full_unstemmed | Average Fracture Energy for Crack Propagation in Postfire Concrete |
| title_short | Average Fracture Energy for Crack Propagation in Postfire Concrete |
| title_sort | average fracture energy for crack propagation in postfire concrete |
| url | http://dx.doi.org/10.1155/2013/143208 |
| work_keys_str_mv | AT kequanyu averagefractureenergyforcrackpropagationinpostfireconcrete AT jiangtaoyu averagefractureenergyforcrackpropagationinpostfireconcrete AT zhoudaolu averagefractureenergyforcrackpropagationinpostfireconcrete |