Technology Research On Measurement Standard Of Instrument For Determining Location Of Concrete Reinforced Bar

Instrument for determining location of concrete reinforced bare is an important meter in nondestructive test of concrete structure, which has the characteristic of small volume and simple operation.lt is used in the transportation industry very high rate.Boldface items of comprehensive first rate and bridge and tunnel have been included in the standard level of highway engineering test and detection organization and it is necessary equipment for comprehensive first rate and bridge and tunnel. But for a long time, in the industry has not established departments measurement standard, social common standard of measurement can not meet the needs of the transportation industry, so the traceability pathway have not been effectively solved.This project is based on the measurement standard technology of instrument for determining location of concrete reinforced bare, take the standards of measurement system of the national road and bridge engineering detection device metering station as the basis, the aim is to determine the magnitude traceability method of concrete reinforced protective layer thickness in transportation industry, study the measurement standards device and the measurement device of instrument for determining location of concrete reinforced bare, so as to solve the effectiveness of metrological verification for concrete reinforced location test instrument and provide security for the reliability of reinforced concrete structures durability evaluation.Measurement standard device adopts grating measuring system and a stered microscope imaging system, which adopts a stered microscope imaging and grating measurement to development. Measurement standard device is made by using organic glass as dielectric material and through the finish machining of steel rods to screwing in organic glass hole-made. The stability, repeatability confirmatory test and analysis of uncertainty are carried on measurement standard device and standard developed, which shows the measurement standard device and standard in accordance with concrete reinforced location meter quantity traceability chart and can carry on the quantity traceability to the reinforced position apparatus.