论文部分内容阅读
罗马尼亚对混凝土非破损检验的研究大约开始于1956年。1957年发表过用超声波脉冲法及谐震法研究混凝土硬化的报告。1961～1962年初次制定了混凝土非破损检验的超声波脉冲法和表面硬度法的标准。该标准是罗马尼亚以及其他国家的研究成果,它包括脉冲速度或回弹读数与混凝土抗压强度之间的对应值。该标准并采纳了1958～1961年间在工地应用非破损检验所集累的成果。此后,非破损检验的应用范围就扩大了,现在已有三个研究院,三个部属的中心实验室,六个以上的其他实验室和四个大型
The Romanian study on the non-destructive inspection of concrete began in about 1956. In 1957, a report on the hardening of concrete with the ultrasonic pulse method and the resonance method was published. From 1961 to 1962, the standards for ultrasonic pulse method and surface hardness method for non-destructive testing of concrete were established for the first time. This standard is a result of research in Romania and other countries. It includes the corresponding values between pulse speed or rebound readings and concrete compressive strength. The standard also incorporates the results of the application of non-destructive testing at the site between 1958 and 1961. Since then, the scope of application of non-destructive inspections has been expanded. There are now three institutes, three subordinate central laboratories, more than six other laboratories, and four large ones.