The durability study of high performance concrete in sulfate environment | |
Qiao Hongxia2; Yu Hongfa2; Zhou Mingru1; He Zhongmao3 | |
2010 | |
会议日期 | April 23, 2010 - April 25, 2010 |
会议地点 | Yantai, China |
关键词 | Additives Aggregates Concrete aggregates Concrete mixing Concrete mixtures Durability Elastic moduli Hydrated lime Hydrates Hydration Portland cement Sodium sulfate Sulfur compounds Composite additives Dry-wet cycle Durability of concretes Dynamic elastic moduli Portland cement concretes Salt resistance Sulfate resistant cements Sulfate solutions |
卷号 | 2 |
页码 | 885-888 |
英文摘要 | Aiming at determining the durability of concrete in very salty regions, this study examines the performance of various high performance fine aggregate concretes in a sulfate environment, such as high performance concrete inside a composite additive, and Portland cement concrete and sulfate resistant cement concrete, all of which experienced dry-wet cycles in sodium sulfate solutions. By examining the changes of elastic moduli and analyzing the SEM of the concrete, this paper has found that the salt resistance of sulfate resistant cement concrete is no better than that of Portland cement concrete in the extremely aggressive dry-wet cycle environment but high performance concrete containing a composite additive has better resistance in a sulfate environment. Besides, the composite additive can create the environment for a second hydration to reduce the amount of Ca(OH)2 inside the concrete, and build additional C-S-H gel to reform the microstructure of concrete effectively. Finally, the paper offers some advice for mixing concrete in salt regions. |
会议录 | Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures |
会议录出版者 | CI-Premier Pte Ltd |
会议录出版地 | 150 ORCHARD ROAD #07-14, ORCHARD PLAZA, SINGAPORE, 238841, SINGAPORE |
语种 | 英语 |
WOS研究方向 | Engineering |
WOS记录号 | WOS:000290459300129 |
内容类型 | 会议论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/117004] |
专题 | 土木工程学院 |
通讯作者 | Qiao Hongxia |
作者单位 | 1.Lanzhou Univ Technol, Lanzhou, Gansu, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining, Qinghai, Peoples R China 3.Gansu Sci Res Inst Civil Engn, Lanzhou, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Qiao Hongxia,Yu Hongfa,Zhou Mingru,et al. The durability study of high performance concrete in sulfate environment[C]. 见:. Yantai, China. April 23, 2010 - April 25, 2010. |
个性服务 |
查看访问统计 |
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。
修改评论