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On improving the technique of testing concrete in light of ultrasonic method

SHEN Guo-wei, WU Rui-qian ( Shaoxing University,Shaoxing 312000,China) [HT5”SS]  
The usual method of testing concrete may test and des truct a phototype only once and can not define the position,scope of drawbacks of concrete.It also can not demonstrate the extent of structure damaged by the method.Nondestructive testing can abandon these shortcomings.So it is valued and applied in the engineering practice.This article analyses the ultrasonic method -one of nondestructive testing methods.It analyses the basic natures,spreadin g characters of ultrasonic wave,errors and remedies.Finally,it stresses the imp ortance and measures of improving the technique.
【CateGory Index】: TP274
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