POTENTIAL MEASURING MARK SHEET AND METHOD FOR MEASURING POTENTIAL OF REINFORCING BAR THEREWITH

摘要

PURPOSE: To provide a means which unnecessitates marking and enables quick and accurate measurement. ;CONSTITUTION: A mark sheet 1 wherein a grid pattern such as grid points or squares of specified dimension showing the measuring positions of natural potential is printed or written on a woven or unwoven cloth in a water-insoluble oil-based ink, etc., is adhered to the surface of a reinforced concrete as an object to be measured for natural potential, and a reference electrode 6 which is cylindrical or of rotary type for measuring natural potential is brought into contact with the surface of the sheet 1. Then, one end of a lead wire of the electrode 6 is connected with the minus terminal of a potentiometer, while one end of a lead wire connecting to the reinforcing bar is connected with the plus terminal thereof, realizing such a measuring state for natural potential. Thus only scanning on the mark enables quick and accurate measurement without applying marking in advance.;COPYRIGHT: (C)1997,JPO