海水干湿循环对混凝土耐久性影响研究  

Study on Effect of Seawater Dry-wet Cycle on Concrete Durability

作　　者：刘佳 Liu Jia(Shenzhen Urban Deepwater Zhaoye Engineering Consulting Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳市深水兆业工程顾问有限公司,广东深圳518000

出　　处：《黑龙江水利科技》2024年第11期1-4,共4页Heilongjiang Hydraulic Science and Technology

摘　　要：海水干湿循环条件下混凝土结构会出现侵蚀破坏,难以满足设计要求,威胁结构运行安全。文章研究混凝土不同材料的配合比以及干湿循环制度对质量的影响,设立评价指标评估其物理特性变化。结果表明,混凝土的水胶比和粉煤灰掺量对其耐久性存在影响,水胶比越低且适量掺加粉煤灰,可以有效提升混凝土对海水干湿循环条件下侵蚀过程的抵抗作用,同时干湿比越大,对混凝土的破坏越严重。研究结果可以为沿海地区工程建设提供借鉴。Under seawater dry-wet cycle conditions,concrete structures will suffer erosion and damage,making it difficult to meet design requirements and threatening the safety of structural operations.The impact of the mix ratio of different materials and the dry-wet cycle system on the quality of concrete are researched in this paper,which setting up evaluation indicators to evaluate changes in its physical properties.The results show that the water-to-cement ratio and fly ash content of concrete have an impact on its durability.The lower the water-to-cement ratio and the appropriate amount of fly ash,can effectively improve the resistance of concrete to the erosion process under seawater dry-wet cycle conditions.The greater the dry-to-wet ratio,the more serious the damage to concrete.The research results can provide reference for engineering construction in coastal areas.

关 键 词：干湿循环 混凝土侵蚀 配合比 

分 类 号：TU528[建筑科学—建筑技术科学]