Applications Of Instant Non-destructive Test Instrument In Expressway Quality Control

Firstly introducing several old and new methods at present. Deflectmeter methods:static rebound deflection, steady rebond deflection and dynamic deflection. Benkelman beam is a usual method of inefficient,heavy intensity,not good enough reliability in our country. Roughmeter include 3 meter straightedge,continuous roughmeter,bump accumulator in a vehicle. Thickness test is introduced, such as drilling core,digging hole and radar detector. Resisting friction character test have severl methods. Secondly this paper introduces principle configuration,working principle and test process of the the newest test methods of deflectmeter,roughmeter,thichness and resisting friction character. Dynatest 8000 FWD is a instant Non-destructive test method in the world at present.By comparative analysis,bb test and fwd test have good coherency.As a result,fwd may replace old common test method. Accordind to analysis, dynatest 5051 rsp as a advanced instrument is reasonable. Radar detector as a non-destructive instant method must be spreaded hard. Relative standard is modified at the right moment. Safegate coefficient of friction idspection machine measure accuracy data. The result of test is reduplicate and is high efficiency and economy. At last the paper summarize all the content.