Modeling carbonation depth of recycled aggregate concrete containing chlorinated salts
文献类型：期刊论文
| 作者 | Qu, Feng1; Xia, Wen1; Sun, Congtao2; Hou, Hailong1; Huang, Bo1; Wang, Gongxun1; Hu, Song1 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2024-06-07 |
| 卷号 | 430页码:9 |
| 关键词 | Chloride-containing recycled concrete Mineral admixture Recycled coarse aggregate Carbonation depth Carbonization depth forecast |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2024.136478 |
| 通讯作者 | Qu, Feng(fqu@hnust.edu.cn) |
| 英文摘要 | The durability of recycled concrete is susceptible to degradation from both chloride salt attack and carbonation when exposed in service environment. The depth of carbonation in recycled concrete subject to chloride salt attack was studied here. This investigation assessed the effects of mineral admixture, replacement rate of recycled coarse aggregate, and quality of recycled coarse aggregate on the carbonation depth. The carbonation depth Recycled concrete was studied through accelerated simulated carbonation in the laboratory for 7d, 14d and 28d. Based on the results, the correlation analysis was conducted to investigate the relationship between depth of carbonation, mineral admixture, recycled coarse aggregate replacement rate, recycled coarse aggregate quality and the presence of chloride ions. The objective of this study was mainly to investigate the effect of internal chloride ions on the depth of carbonation of recycled concrete subjected to chloride salt attack. The study referred to previous academic research on carbonation in recycled concrete that had not been affected by chloride salts, and conducted a comparative analysis to identify the carbonation depth pattern in recycled concrete influenced by chloride salt exposure. The study discovered a negative correlation between the replacement rate of mineral admixture and recycled coarse aggregate and the carbonation resistance of concrete. Moreover, enhancing the quality of recycled coarse aggregate positively impacted the carbonation resistance of concrete. An improved model was developed that considers the effect of internal chloride salts on the carbonation depth of recycled concrete, in reference to the empirical prediction model presently available. The model demonstrated a high level of agreement with experimental outcomes, displaying an error range of between -4.32% and 8.27%. It enables an in-depth comprehension of the carbonation behavior of recycled aggregate concrete in an environment exposed to chloride salt attack. Based on the model, the service life of recycled concrete structures can be more accurately forecasted, which can provide a theoretical direction for enhancing the durability of engineering structure. |
| WOS关键词 | FLY-ASH ; CHLORIDE PENETRATION ; DEMOLITION WASTE ; CONSTRUCTION ; DURABILITY ; BEHAVIOR |
| 资助项目 | Scientific research project of Hunan Provincial Department of Education[18C0324] ; Scientific research project of Hunan Provincial Department of Education[19A0164] ; Scientific research project of Hunan Provincial Department of Education[22B0473] ; Natural Science Foundation of Hunan University of Science and Technology[E54009] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001240413400001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/186059]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Qu, Feng |
| 作者单位 | 1.Hunan Univ Sci & Technol, Sch Civil Engn, Xiangtan 411201, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Feng,Xia, Wen,Sun, Congtao,et al. Modeling carbonation depth of recycled aggregate concrete containing chlorinated salts[J]. CONSTRUCTION AND BUILDING MATERIALS,2024,430:9. |
| APA | Qu, Feng.,Xia, Wen.,Sun, Congtao.,Hou, Hailong.,Huang, Bo.,...&Hu, Song.(2024).Modeling carbonation depth of recycled aggregate concrete containing chlorinated salts.CONSTRUCTION AND BUILDING MATERIALS,430,9. |
| MLA | Qu, Feng,et al."Modeling carbonation depth of recycled aggregate concrete containing chlorinated salts".CONSTRUCTION AND BUILDING MATERIALS 430(2024):9. |
入库方式： OAI收割
来源：海洋研究所
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