论文部分内容阅读
目前国内用于混凝土强度无损检测的方法,主要有钻芯取样法、回弹法、拔出法、射钉法、超声法、超声回弹综合法等。其中,钻芯取样法对混凝土质量可进行准确、直观的判断,但势必会造成结构物的局部破坏,需要进行修补,因而不宜用于大面积的全面检测[8]。而回弹法、拔出法、射钉法等方法只能测定表层1～3cm深度的强度,反映的是混凝土构件的表层强度,因此这几种方法都有一个共同应用前提,就是要求混凝土表层强度与内部一致。
Currently used for non-destructive concrete strength testing methods, there are core sampling method, the rebound method, pull out the law, nailing method, ultrasonic method, ultrasonic rebound synthesis method. Among them, the core sampling method for concrete quality can be accurate and intuitive judgment, but it is bound to cause local damage to the structure, the need for repair, it is not suitable for large-scale comprehensive testing [8]. The method of rebound, pull-out, nailing and other methods can only measure the depth of the surface 1 ~ 3cm depth, reflecting the surface strength of concrete components, so these methods have a common premise is that the concrete surface Intensity and internal consistency.