中图分类号：TP391.41         文献标识码：A         文章编号：2096-4706（2019）12-0162-03

Application of Digital Image Correlation Method in Steel Corrosion

GUO Pengfei

（School of Science，Qingdao University of Technology，Qingdao 266033，China）

Abstract：This paper proposes a digital image correlation method （DIC） based measurement method for directly obtaining theexpansion force of steel corrosion in reinforced concrete specimens. The strain gauge was attached to the outer surface of the reinforcedconcrete specimen，and the light test was carried out at the same time. The CCD camera was used to collect the deformation of the concretesurface during the accelerated corrosion of the steel，and the rust expansion force of the steel was calculated and compared with themeasurement results of the strain gauge. The test shows that before the cracking of the reinforced concrete specimen，the expansion forceobtained by the digital image correlation method is in good agreement with the measurement results of the strain gauge. Thus，this methodprovides a new way to measure the expansion force generated by steel corrosion.

Keywords：reinforcement corrosion；rust expansion force；digital image correlation method

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