海水侵蚀环境对混凝土早期耐久性的影响及养护措施  

Influence of seawater on the durability of early concrete and maintenance methods

作　　者：陈海燕 李明明 毛江鸿[2] 王珏[3] 李志远[3] 俞凯奇 高原[2] 

机构地区：[1]浙江省二建建设集团有限公司,浙江宁波315002 [2]浙江大学宁波理工学院,浙江宁波315100 [3]浙江大学结构工程研究所,浙江杭州310058

出　　处：《混凝土》2016年第4期43-45,49,共4页Concrete

基　　金：国家自然科学基金(51408544);浙江省自然科学基金(LQ14E080007);国家大学生创新创业训练计划项目(201413022019);宁波市科技创新团队(2011B81005);宁波市科技服务业示范项目(2014F10016)

摘　　要：随着海洋经济的发展,大量工程结构建造在海洋环境中,钢筋混凝土耐久性问题非常突出。在海水侵蚀环境下建造工程结构,需重点关注海水中有害离子对结构耐久性的影响。设计了模拟真实海洋环境的干湿循环试验,研究不同海水侵蚀周期下养护期混凝土的氯离子渗透及扩散规律。结果表明,如果混凝土在养护期内经历海水侵蚀作用,则混凝土耐久性使用寿命显著降低,因此,海水侵蚀环境下建造工程结构时需重点关注养护措施。With the development of marine economy, a large number of structures built in the marine environment, and the durability deterioration of the reinforced concrete has become increasingly outstanding. It needs to focus on the effect of the harmful ions when building structures in the marine environment. It studied on the chloride ion penetration and diffusion law under different curing period through simulating real marine environment by dry - wet cycling test. The results show that the chloride ion increase significantly once it exposed to marine environment during curing period, it will remarkably reduce the durability life of concrete. Thus, it needs to focus on the maintenance measures when building structures in marine environment.

关 键 词：海洋环境 混凝土 耐久性 养护 

分 类 号：TU528.01[建筑科学—建筑技术科学]