1引言德国混凝土建筑大多根据DIN 1045标准进行设计,该标准保证了建筑物在不需要大规模维修的前提下,也不会影响其50年使用寿命。根据DIN 1045标准,建筑物表面防护系统(虽然混凝土为表面防护系统提供了牢固的支撑,但混凝土本身并没有防护功能)需另行设计,由于本身并没有承载功能,往往很难实现50年使用寿命。因此,表面防护系统通常需要定期 1 Introduction Most concrete buildings in Germany are designed to DIN 1045 standards, which guarantee that buildings will not affect their 50-year service life without requiring major repairs. According to DIN 1045, building surface protection systems (although concrete provides firm support to the surface protection system, but the concrete itself does not have a protective function) have to be designed separately and are often difficult to achieve for 50 years because they do not have a load-carrying function . Therefore, surface protection systems usually require regular