海洋潮汐环境下混凝土碳化行为模拟试验研究  

Simulation test study on concrete cabonization behavior in marine tidal conditions

作　　者：徐文冰[1,2] 邓波[1,2] 王婵[1,2] 房艳伟[1,2] 占文[1,2] 

机构地区：[1]中交武汉港湾工程设计研究院有限公司,湖北武汉430040 [2]长大桥梁建设施工技术交通行业重点实验室,湖北武汉430040

出　　处：《铁道建筑》2014年第1期125-128,共4页Railway Engineering

摘　　要：混凝土的抗碳化性能是混凝土耐久性的重要指标。在海洋潮汐环境下的干湿循环条件直接影响混凝土内部的孔结构,进而影响混凝土的碳化行为。本文模拟海工工程中的海洋潮汐环境,研究不同配合比混凝土在干湿循环条件下的碳化行为,并探究其作用机理。研究结果表明:干湿循环条件加速了混凝土的碳化过程,但粉煤灰和矿粉的掺入可降低干湿循环对混凝土抗碳化性能的影响。Carbonization resistance is one of the most important index in determining the durability of the concrete.In a tide environment,the wetting-drying cycle directly affect the pore structure of the concrete , which further influence the carbonization process .The paper simulated the tide environment with the purpose of studying the carbonization process of concrete with different mix portion in wetting-drying cycle and its mechanism.the results indicate that wetting-drying cycle accelerates the carbonization process,but flyash and mineral powder may undermine the influence of wetting-drying cycle to the carbonization resistance of the concrete.

关 键 词：干湿循环 碳化行为 孔结构 矿物掺合料 

分 类 号：TU528.57[建筑科学—建筑技术科学]