| The Effect of Relative Humidity on Creep Behavior of Cement Paste Microprism | |
| Chen Z(陈召)1,2; Dargahi, Mahdiar2; Sorelli, Luca2 | |
| Corresponding Author | Chen, Zhao([email protected]) ; Sorelli, Luca([email protected]) |
| Source Publication | MATERIALS
 |
| 2025 | |
| Volume | 18Issue:2Pages:17 |
| Abstract | 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. |
| Keyword | cement paste microprism relative humidity creep modeling foundation effect analytical modeling finite element method |
| DOI | 10.3390/ma18020406 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001404370800001 |
| WOS Keyword | C-S-H ; MODEL ; CONCRETE ; WATER ; LOAD |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
| Funding Project | National Sciences and Engineering Research Council of Canada |
| Funding Organization | National Sciences and Engineering Research Council of Canada |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Chen, Zhao ; Sorelli, Luca |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/98232 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Laval Univ, Dept Civil Engn, Quebec City G1V 0A6, PQ, Canada |
| Recommended Citation 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.Rp_Au:Chen, Zhao, Sorelli, Luca |
| 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. |
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