Ion-responsive self-healing concrete with sensing capability for enhanced sulfate resistance
文献类型：期刊论文
| 作者 | Wang, Xiaoping2; Zhang, Rongling2,3; Xu, Weichen1; Wang, Yanshuai4; Ma, Xinmin5; Feng, Jianjun6 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2025-09-05 |
| 卷号 | 490页码:12 |
| 关键词 | Saline soil Sulfate attack Ion responsiveness Self-sensing and self-healing microcapsules |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2025.142444 |
| 通讯作者 | Zhang, Rongling(mogzrlggg@163.com) |
| 英文摘要 | To address the deterioration of concrete structures caused by severe sulfate corrosion in western regions, which leads to reduced durability and safety, a self-sensing and self-healing anti-corrosion microcapsule with sulfate ion responsiveness was designed using polyacrylamide (PAM) as the core material and ionic liquids (ILs) as the shell material. The optimal stirring temperature and duration for microcapsule preparation were determined based on measurements of particle size distribution, ion-responsive behavior, and encapsulation efficiency. The micro-capsules were incorporated into concrete at dosages of 1 %, 2 %, and 3 % of the cementitious material, and their effects on dynamic elastic modulus, pore structure, and sulfate ion concentration were examined. The mechanism was elucidated, and the sulfate corrosion rate of concrete after 480 days of indoor exposure was evaluated. The results indicate that when the stirring temperature is maintained at 70 degrees C and the stirring duration is 24 h, the microcapsules exhibit a uniform particle size distribution and the highest encapsulation efficiency. However, the temperature has minimal influence on the ion-responsive rate. The incorporation of microcapsules reduced the early-stage dynamic elastic modulus of concrete but significantly improved it at later stages compared to the control group. Based on the variation in relative dynamic elastic modulus, the sulfate corrosion process of concrete was divided into a performance enhancement phase, a degradation phase, and a deterioration phase, with the degradation and deterioration phases significantly delayed by the incorporation of self-sensing and self-healing microcapsules. The addition of microcapsules significantly reduced the proportion of harmful and more harmful pores, decreased the sulfate ion penetration depth, and enhanced the corrosion resistance of concrete. The findings provide a novel solution for enhancing sulfate corrosion resistance in concrete exposed to saline soil environments in western regions. |
| WOS关键词 | MICROCAPSULE ; TEMPERATURE ; DURABILITY ; CORROSION |
| 资助项目 | Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control ; National Key R & D Program of China[2024YFE0115200] ; National Natural Science Foundation of China and China Railway[U2368209] ; Science and Technology Major Special Program of Gansu Province[25ZDWA006] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001529436400001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/202580]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Zhang, Rongling |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266000, Peoples R China 2.Lanzhou Jiaotong Univ, Civil Engn Dept, Lanzhou 730070, Peoples R China 3.Lanzhou Jiaotong Univ, Natl & Prov Joint Engn Lab Rd & Bridge Disaster Pr, Lanzhou 730070, Peoples R China 4.Shenzhen Univ, Sch Civil & Transportat Engn, Shenzhen 518060, Peoples R China 5.China Railway, Urumqi Bur Grp Co Ltd, Urumqi 830011, Peoples R China 6.China Railway 21st Bur Grp Co Ltd, Lanzhou 730070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiaoping,Zhang, Rongling,Xu, Weichen,et al. Ion-responsive self-healing concrete with sensing capability for enhanced sulfate resistance[J]. CONSTRUCTION AND BUILDING MATERIALS,2025,490:12. |
| APA | Wang, Xiaoping,Zhang, Rongling,Xu, Weichen,Wang, Yanshuai,Ma, Xinmin,&Feng, Jianjun.(2025).Ion-responsive self-healing concrete with sensing capability for enhanced sulfate resistance.CONSTRUCTION AND BUILDING MATERIALS,490,12. |
| MLA | Wang, Xiaoping,et al."Ion-responsive self-healing concrete with sensing capability for enhanced sulfate resistance".CONSTRUCTION AND BUILDING MATERIALS 490(2025):12. |
入库方式： OAI收割
来源：海洋研究所
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