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剪压法作为一种新的微破损方法,通过对混凝土结构或构件直角边的角部施加剪切力,使其产生局部剪压破坏,从而推算出结构或构件混凝土强度。剪压法检测作为一种新的混凝土现场检测方法,较回弹法准确度高、较钻芯法方便,检测后的混凝土局部破坏面较小,不影响构件本身的承载能力,具有检测精度高、对结构损伤小、操作简单便捷、检测结果直观等优点。通过不同混凝土龄期展开剪压、抗压强度的试验,按照国内剪压法检测规程的惯例,推导出上海地区的线性回归方程f=A+BN。
As a new method of micro-damage, the shear method, by applying shear force to the corner of the right-angled edge of concrete structure or component to cause local shear failure, can calculate the strength of concrete or structural concrete. As a new on-site testing method of concrete, the shear test is more accurate than the rebound method, which is more convenient than the core drilling method. The local damage surface of the concrete after testing is small and does not affect the load carrying capacity of the component itself. , Small damage to the structure, simple and convenient operation, intuitive test results. According to the practice of shear test and compressive strength test in different concrete ages, the linear regression equation f = A + BN in Shanghai was derived according to the practice of shear test.