钱塘江河口水体氯离子含量及对混凝土的侵蚀  

Content of chlorion in water body at Qiantang River mouth and its erosion to concrete

作　　者：张俊芝[1] 王建泽[1] 黄海珍 郑辉[1] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310032 [2]浙江省钱塘江管理局,浙江杭州310016

出　　处：《自然灾害学报》2008年第4期33-37,共5页Journal of Natural Disasters

基　　金：国家科技支撑计划项目(2006BAC05B05);浙江省科技计划项目(2007C23058);浙江省水利厅重点科技项目(RI0716)

摘　　要：通过对钱塘江河口感潮环境表层水体中氯离子含量及其海塘上水工混凝土表面氯离子浓度的检测,考察了水体中氯离子含量与离河口距离及护坡混凝土表面氯离子浓度的关系。结果表明,河口感潮环境下水体中的氯离子含量,总体上是距离河口越近则表层水体中的氯离子含量越高,并与混凝土表面氯离子浓度之间具有较好的相关性,而混凝土表面氯离子浓度与其不同深度时的浓度之间近似完全正相关。设法减少水体中的氯离子入侵,是提高钱塘江河口感潮段混凝土结构抗氯离子侵蚀耐久性的关键措施。The concentration of chlorion in water body and on hydraulic concrete surface at Qiantang Rirer mouth were measured to identify the correlation between chlorion＇s concentration of water body and distance of estuary/ chlorion＇s concentration of surface concrete. The result shows that the chlorions concentration in water body increa- ses with decrease of distance from estuary. There was better relationship between chlorion＇s concentration of water body and that on hydraulic concrete surface, and the correlation between chlorion＇s concentration on concrete surface and different depths in concrete is complete positive correlation approximately. Adopting measure to reduce chlofion＇s invasion in estuary water body is the key of increasing the durability of concrete structures at estuary reach of the Qiantang River.

关 键 词：感潮环境 氯离子 水工混凝土 侵蚀 相关性 

分 类 号：TU528.36[建筑科学—建筑技术科学]