【摘要】 混凝土结构的抗渗及防潮一直是土木工程领域需要克服的重要技术难题之一。文章研究了电渗脉冲用于混凝土结构抗渗防潮的影响因素,包括电渗脉冲电压、混凝土水灰比、液相中离子浓度,以及脉冲频率等;模拟测试了电渗脉冲作用下混凝土结构的排水与相对湿度变化。研究表明,随着脉冲电压升高与混凝土水灰比增大,电渗脉冲下混凝土渗水量增加;Na2SO4溶液浓度增大时,电渗脉冲作用下混凝土渗水量增加;脉冲频率对混凝土渗水量影响不大;研究亦显示电渗脉冲作用下混凝土排水效果明显,混凝土相对湿度显著降低。更多还原

【Abstract】 Seepage resistance and moisture proof of concrete structure is a hard work in civil engineering.The influence factors of seepage resistance and moisture proof of concrete using Electro-Osmotic Pulse(EOP),such as electric voltage,water to cement ratio of concrete,ion concentration in liquid phase,and pulse frequency,were analyzed.Simulating experiment of EOP used to drain water and reduce relatively humidity of concrete structure is executed.The results show that,volume of water seepage is improved due to application of EOP in concrete with increase of electric voltage,W/C of concrete,and concentration of sodium sulfate.And pulse frequency has little effect on volume of water seepage.The results are also presented that effect of dewatering and humidity reducing are remarkable when EOP is applied in concrete structure.更多还原