Influence of the ITZ Thickness on the Damage Performance of Recycled Concrete
The interfacial transition zone (ITZ) is a weak region of recycled concrete. To further study the influence of the ITZ on the damage performance of recycled concrete, a formula for calculating the ITZ thickness is derived, and the ITZ thickness is calculated for various recycled concrete mixtures wi...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/6643956 |
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| _version_ | 1832555228269903872 |
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| author | Fuwei Xu Bin Tian Gang Xu |
| author_facet | Fuwei Xu Bin Tian Gang Xu |
| author_sort | Fuwei Xu |
| collection | DOAJ |
| description | The interfacial transition zone (ITZ) is a weak region of recycled concrete. To further study the influence of the ITZ on the damage performance of recycled concrete, a formula for calculating the ITZ thickness is derived, and the ITZ thickness is calculated for various recycled concrete mixtures with a recycled aggregate content of 30%. The concrete model test method and finite element analysis software were used to numerically simulate common concrete and recycled concrete with ITZ thicknesses of 0.05 mm, 1 mm, 2 mm, 3 mm, and 4 mm. The results show that the thickness of the ITZ has an obvious influence on the cracking strength of recycled concrete and that the cracking strength of recycled concrete decreases with increasing ITZ thickness. The cracks in recycled concrete initiate from the ITZ, and the damage degree increases with increasing ITZ thickness. Compared with that of common concrete, the cracking strength of recycled concrete with an ITZ thickness of no more than 2 mm (i.e., the replacement rate of the recycled aggregates is no more than 30%) is not significantly reduced. |
| format | Article |
| id | doaj-art-c6de90aeb6a240269c4e7b24357a37c8 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-c6de90aeb6a240269c4e7b24357a37c82025-02-03T05:49:17ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/66439566643956Influence of the ITZ Thickness on the Damage Performance of Recycled ConcreteFuwei Xu0Bin Tian1Gang Xu2College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, Hubei 443002, ChinaCollege of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, Hubei 443002, ChinaCollege of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, Hubei 443002, ChinaThe interfacial transition zone (ITZ) is a weak region of recycled concrete. To further study the influence of the ITZ on the damage performance of recycled concrete, a formula for calculating the ITZ thickness is derived, and the ITZ thickness is calculated for various recycled concrete mixtures with a recycled aggregate content of 30%. The concrete model test method and finite element analysis software were used to numerically simulate common concrete and recycled concrete with ITZ thicknesses of 0.05 mm, 1 mm, 2 mm, 3 mm, and 4 mm. The results show that the thickness of the ITZ has an obvious influence on the cracking strength of recycled concrete and that the cracking strength of recycled concrete decreases with increasing ITZ thickness. The cracks in recycled concrete initiate from the ITZ, and the damage degree increases with increasing ITZ thickness. Compared with that of common concrete, the cracking strength of recycled concrete with an ITZ thickness of no more than 2 mm (i.e., the replacement rate of the recycled aggregates is no more than 30%) is not significantly reduced.http://dx.doi.org/10.1155/2021/6643956 |
| spellingShingle | Fuwei Xu Bin Tian Gang Xu Influence of the ITZ Thickness on the Damage Performance of Recycled Concrete Advances in Materials Science and Engineering |
| title | Influence of the ITZ Thickness on the Damage Performance of Recycled Concrete |
| title_full | Influence of the ITZ Thickness on the Damage Performance of Recycled Concrete |
| title_fullStr | Influence of the ITZ Thickness on the Damage Performance of Recycled Concrete |
| title_full_unstemmed | Influence of the ITZ Thickness on the Damage Performance of Recycled Concrete |
| title_short | Influence of the ITZ Thickness on the Damage Performance of Recycled Concrete |
| title_sort | influence of the itz thickness on the damage performance of recycled concrete |
| url | http://dx.doi.org/10.1155/2021/6643956 |
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