Climate Change Data Portal
| DOI | 10.1061/JMCEE7.MTENG-16783 |
| Investigating Concrete Performance: Compressive Strength and Pore-Structure Evolution in Simulated Permafrost Conditions of the Qinghai-Tibet Plateau Zone | |
| 发表日期 | 2024 |
| ISSN | 0899-1561 |
| EISSN | 1943-5533 |
| 起始页码 | 36 |
| 结束页码 | 5 |
| 卷号 | 36期号:5 |
| 英文摘要 | As construction continues, a large number of concrete engineering facilities will be put into use in permafrost areas, which poses a challenge to the long-term service of concrete materials. To investigate the evolution of strength and pore structure of concrete under the cold permafrost environment, concrete compressive strength tests and mercury intrusion tests were performed at four molding temperatures (5 degrees C, 10 degrees C, 15 degrees C, and 20 degrees C) under continuous -5 degrees C curing and standard curing conditions. Under negative-temperature curing, the strength of concrete at an early age reached about 80% that of standard curing; however, its strength at a later age was comparable to that at 28 days under standard curing. Under negative-temperature curing, the most probable pore size and porosity at 28 days of age were larger than those under standard curing. Increasing the molding temperature was beneficial for the promotion of the internal hydration reaction of concrete, refining its microscopic pore structure, and promoting its strength development. The strength of concrete with different porosities and average pore diameters could be predicted better using the Atzeni model or the bivariate Hasselmann model. Based on maturity theory, an equivalent age model of concrete under a permafrost temperature environment was established. The prediction deviation of the model was controlled within +/- 5%, so the model can be used to predict the time-dependent strength of concrete in permafrost zones. |
| 英文关键词 | Permafrost; Negative-temperature effect; Compressive strength; Microscopic pore structure; Equivalent-age model |
| 语种 | 英语 |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| WOS类目 | Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary |
| WOS记录号 | WOS:001185778600009 |
| 来源期刊 | JOURNAL OF MATERIALS IN CIVIL ENGINEERING
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/299039 |
| 作者单位 | Lanzhou Jiaotong University; Central South University |
| 推荐引用方式 GB/T 7714 | . Investigating Concrete Performance: Compressive Strength and Pore-Structure Evolution in Simulated Permafrost Conditions of the Qinghai-Tibet Plateau Zone[J],2024,36(5). |
| APA | (2024).Investigating Concrete Performance: Compressive Strength and Pore-Structure Evolution in Simulated Permafrost Conditions of the Qinghai-Tibet Plateau Zone.JOURNAL OF MATERIALS IN CIVIL ENGINEERING,36(5). |
| MLA | "Investigating Concrete Performance: Compressive Strength and Pore-Structure Evolution in Simulated Permafrost Conditions of the Qinghai-Tibet Plateau Zone".JOURNAL OF MATERIALS IN CIVIL ENGINEERING 36.5(2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
