CONCRETE CRACK WIDTH MEASURING APPARATUS AND A CRACK WIDTH MEASURING METHOD THEREOF, FOR IMPROVING THE MEASURING RELIABILITY ABOUT THE WIDTH OF A CRACK GENERATED IN THE CONCRETE

摘要

PURPOSE: A concrete crack width measuring apparatus and a crack width measuring method thereof are provided to measure the width of a crack generated in the concrete regardless of site conditions in real time.;CONSTITUTION: A concrete crack width measuring apparatus includes a measuring apparatus body(10), a measuring pin, and an elastic member(30). The measuring apparatus body has a hole, a guide slot(110), and scales(120). The scales are formed near a guide hole at regular intervals. The measuring pin is composed of a body unit(200), a joining unit(210), a knob unit(220), and a measuring unit(230). The body unit is inserted in the measuring apparatus body to be movable vertically. The joining unit is formed in the upper part of the body unit in one body. The knob unit is combined to the joining unit outside the measuring apparatus body. The knob unit has a pointer(225). The measuring unit is extended in the lower end of the body unit in one body. The measuring unit is drawn out outside through a passing hole. The elastic member provides returning power to the direction returning the measuring pin into the measuring apparatus body.;COPYRIGHT KIPO 2010