The Research On Prestressed Concrete Beam Grouting Quality Nondestructive Testing Technology

Since reform and opening in China, highway construction rapid development, but thepretressed bellows grouting prestressed reinforcement corrosion problems make even falure andlead to bridge safety problem has been troubling unless the large science and technology andworker, was listed as the highway construction of the ten persistent ailment.This article through to the domestic and foreign research of the current situation of thestatement, reviews the development of nondestructive testing technology. Ultrasonicnondestructive testing method for selecting, of ultrasonic detection principle and properties, anddetermined the first wave in the present stage is the ultrasonic nondestructive testing of the mainobject. Making C40, C50two different strength of the specimens, the two specimens ofultrasonic testing data collection, finally after analysis obtains the same material under differentstrength of the two kinds of evaluation standards. Based on this the nanjing institute of water usescience early once put the probability method, solved the are low in geologic ok defect problem,got the preliminary evaluation criteria, which the corrugated pipe grouting method of probabilitydensity condition. Make three root10m experimental beams, respectively in different position,different hole defects, Settings, probability method of evaluation standard of verification, finallythink is feasible.