A microcrack-based anisotropic damage model for concrete under mechanical loading and calcium leaching
文献类型：期刊论文
| 作者 | Hou, Huiming2; Gong, Chengxi2; Hu, Dawei1; Wang, Wei3 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2024-08-09 |
| 卷号 | 438页码:15 |
| 关键词 | Anisotropic destruction Chemo-mechanical coupling Microcracks in concrete Numerical analysis |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2024.137272 |
| 英文摘要 | In underground construction, concrete is always subjected to triaxial stress and calcium ion leaching, which results in anisotropic damage to concrete and reduce the durability of the structure. To capture the anisotropic damage properties of concrete subjected to mechanical-chemical coupling effects and predict the durability of underground concrete structure accurately, a microcrack-based anisotropic damage model is proposed. The mechanical damage, reflecting the density and direction of the microcracks caused by mechanical loading, is defined by a second-order tensor. The degree of chemical damage is defined by the amount of solid calcium phase lost in the concrete. Considering oriented microcrack and the influence of chemical damage on fracture toughness, the anisotropic mechanical damage evolution law of microcrack was established by linear fracture mechanics. A phenomenological chemical model governed by a diffusion law considering the variation of diffusion coefficient with stress induced microcracks is defined to describe the calcium dissolution process. The simulation results are in good agreement with the experimental results. Compared with the traditional elastoplastic damage model, the maximum creep error is only 0.114 parts per thousand. |
| 资助项目 | National Natural Science Foundation of China[52108366] ; Scientific Research Foundation of Shantou University[NTF21046] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001264037500001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41872]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Gong, Chengxi |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Shantou Univ, Dept Civil & Environm Engn, Shantou 515063, Peoples R China 3.Guangdong Res Inst Water Resources & Hydropower, Guangzhou 510610, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hou, Huiming,Gong, Chengxi,Hu, Dawei,et al. A microcrack-based anisotropic damage model for concrete under mechanical loading and calcium leaching[J]. CONSTRUCTION AND BUILDING MATERIALS,2024,438:15. |
| APA | Hou, Huiming,Gong, Chengxi,Hu, Dawei,&Wang, Wei.(2024).A microcrack-based anisotropic damage model for concrete under mechanical loading and calcium leaching.CONSTRUCTION AND BUILDING MATERIALS,438,15. |
| MLA | Hou, Huiming,et al."A microcrack-based anisotropic damage model for concrete under mechanical loading and calcium leaching".CONSTRUCTION AND BUILDING MATERIALS 438(2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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