The effect of environment on resisting chloride permeability in marine concrete
(0) Permeability rule of chloride for ordinary Portland cement concrete (OPC) and high performance concrete (HPC) in the marine atmospheric,tidal,and submerged zone and laboratory seawater is investigated by use of field exposure testing in the ocean and laboratory experiment. The method of stratified sampling and chemical analysis is taken. The results show that OPC has higher rate of chloride penetration than that of HPC. The chloride diffusion coefficient is the power function of exposure time and meets the logrithm function relationship between marine environment and the laboratory conditions.On the basis of the test results,the service life of marine concrete is evaluated using modified Ficks second law. It is found that the order of lifetime in different environments is: laboratory>atmospheric zone>submerged zone>tidal zone.HPC should be more suitable for the ocean tidal engineering applications than those of OPC.
Ordinary Portland cement concrete(OPC) High performance concrete(HPC) Marine concrete Chloride Diffusion coefficient Permeability Service life
Qingling Wu Hongfa Yu Jiachun Wang
Department of Civil Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 21O016,Ch Department of Architecture Engineering,Xiamen University of Technology,Xiamen 361024,China
国际会议
Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)
杭州
英文
433-438
2008-10-31（万方平台首次上网日期，不代表论文的发表时间）