中文摘要：

新旧的具体合成系统通常在具体修理结构存在。在现在的工作，实验的系列被执行调查由测量 6 小时的库仑充电和氯化物扩散性合成的新旧的水泥的渗透和离子散开性质。在新旧的 composites 的运输性质之中的相互关系，新、旧的水泥也被讨论。结果显示新旧的具体合成系统的渗透和氯化物扩散性仔细互连到相应新具体、旧的水泥。在新具体、旧的水泥之间的界面的转变地区极大地影响新旧的具体系统的运输性质。与为新旧的水泥的相应新水泥和旧具体更低的渗透和扩散性价值相比， composites 能被选择合适的新水泥完成。为给运输性质的修理设计定制的新旧的具体合成系统是可能的。

英文摘要：

New-old concrete composite system usually exists in concrete repairing structure.In the present work,series of experiments were carried out to investigate permeability and ion diffusion properties of new-old concrete composite by measuring 6-hour coulomb charge and chloride diffusivity.The interrelation among transport properties of new-old composites,new,and old concretes was also discussed.Results indicate that the permeability and chloride diffusivity of new-old concrete composite system closely interrelate to the corresponding new concrete and old concrete.The interfacial transition zone between new concrete and old concrete greatly influences the transport property of new-old concrete system.Compared with the corresponding new concrete and old concrete lower permeability and diffusivity values for the new-old concrete composites can be achieved by choosing suitable new concrete.It is possible to design the tailor-made new-old concrete composite system for repair given the transport property.