应力硫酸盐侵蚀的防护及在海堤工程中的应用  

Prevention and Protection of Concrete from Sulphate Corrosion under Stressing and the Application in Coast-dam Engineering

作　　者：李金玉[1] 彭小平[1] 田军涛[1] 关遇时[1] 曹建国[1] 陈振隆 顾帮才 吴伯勤 刘善清 

机构地区：[1]中国水利水电科学研究院,北京100038 [2]滨海海堤应急防护工程指挥部

出　　处：《混凝土与水泥制品》2000年第6期3-6,共4页China Concrete and Cement Products

基　　金：国家"九五"攻关项目(96-535)的部分科研成果

摘　　要：高浓度和应力状态下砼硫酸盐侵蚀性的研究成果表明 ,当SO42 -浓度最高达80000mg/l时 ,荷载对砼的硫酸盐侵蚀破坏有明显的加剧作用 ,而且随着应力等级的增加 ,破坏作用加剧。本文着重从改善砼本体材料和表面防护两条途径 ,进行提高砼应力状态下抗高浓度硫酸盐侵蚀破坏能力的研究 ,其中表面防护技术已在工程中得到了示范和初步的实施 ,效果良好。The experimental research shows that, when concrete is under high concentration SO42- and is applied compresive stress cooperatively, the damage due to sulfate corrosion is accelerated obviously, and with the increassing of stress level the damage is more serious. In this paper, two methods for improving the ability of corrosion resistance to sulfate ( in high concentration) and stress attack cooperatively have been studied, one is to improve concrete materials and the other is to apply a coating on concrete surface, and the latter had been carried out in a practical engineering.

关 键 词：应力硫酸盐侵蚀 混凝土本体材料 表面防护 应用 

分 类 号：U656.314[交通运输工程—港口、海岸及近海工程]