The Effect of Relative Humidity on Creep Behavior of Cement Paste Microprism
文献类型：期刊论文
| 作者 | Chen Z(陈召)1,2; Dargahi, Mahdiar1; Sorelli, Luca1 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2025 |
| 卷号 | 18期号:2页码:17 |
| 关键词 | cement paste microprism relative humidity creep modeling foundation effect analytical modeling finite element method |
| DOI | 10.3390/ma18020406 |
| 通讯作者 | Chen, Zhao(zhao.chen.2@ulaval.ca) ; Sorelli, Luca(luca.sorelli@gci.ulaval.ca) |
| 英文摘要 | Despite decades of extensive studies, the mechanism of concrete creep remains a subject of debate, mainly due to the complex nature of cement microstructure. This complexity is further amplified by the interplay between water and the cement microstructure. The present study aimed to better understand the creep mechanism through creep tests on microprisms of cement paste at hygral equilibrium. First, microprisms with dimensions of 150 mm x 150 mm x 300 mm were prepared by precision cutting from a cement paste specimen with a water-to-cement ratio of 0.4. Subsequently, uniaxial compression and creep tests were carried out on these microprisms in a chamber with controlled relative humidity (RH). To mitigate the impact of plasticity and damage, the applied peak load was set to generate a stress level that was approximately 40% of the compressive strength. Moreover, an analytical coefficient phi was formulated to account for the foundation effect on microprism creep, agreeing with the numerical analysis employing the finite element method. Our findings showed that the microscale creep compliance varied when the RH level was changed from 90% to 11%. Furthermore, logarithmic and power-law models were both applied to simulate creep curves. Lastly, the modeled creep behaviors were compared with those obtained by microindentation experiments in previous studies. |
| 分类号 | 二类/Q1 |
| WOS关键词 | C-S-H ; MODEL ; CONCRETE ; WATER ; LOAD |
| 资助项目 | National Sciences and Engineering Research Council of Canada |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001404370800001 |
| 资助机构 | National Sciences and Engineering Research Council of Canada |
| 其他责任者 | Chen, Zhao ; Sorelli, Luca |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/98231]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Laval Univ, Dept Civil Engn, Quebec City G1V 0A6, PQ, Canada 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Chen Z,Dargahi, Mahdiar,Sorelli, Luca. The Effect of Relative Humidity on Creep Behavior of Cement Paste Microprism[J]. MATERIALS,2025,18(2):17. |
| APA | 陈召,Dargahi, Mahdiar,&Sorelli, Luca.(2025).The Effect of Relative Humidity on Creep Behavior of Cement Paste Microprism.MATERIALS,18(2),17. |
| MLA | 陈召,et al."The Effect of Relative Humidity on Creep Behavior of Cement Paste Microprism".MATERIALS 18.2(2025):17. |
入库方式： OAI收割
来源：力学研究所
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