回弹仪作为火场勘查工具箱装备之一,其工作原理是借助对弹簧的压缩,使弹锤产生冲击功能,将能量传给被测试物体;由于弹性变形的差异,反馈的位移也不相同,从而得出的数值也不同。根据这一原理,利用回弹仪可迅速测试出混凝土表面受火烧损后强度的变化。再与标准的测试数值对比,可以估算出起火的温度和延烧的时间。 Hammer as one of the equipment of the fire exploration toolbox, its working principle is by virtue of the compression of the spring, so that the hammer impact function, the energy passed to the test object; due to the difference of elastic deformation, the feedback displacement is not the same, The resulting values ​​are also different. According to this principle, the use of a rebound meter can quickly test the strength of the concrete surface after fire damage. And then compared with the standard test values, you can estimate the temperature of the fire and the delay time.