Four series stud push-out specimens were conducted to study static mechanical behavior when stud shear connectors of composite beams were corroded. Firstly

the studs were manually rapidly corroded by electrochemical methods

and then a static load test was performed on them. Test results show that when corrosion occurs at stud rod especially close to combined surface

the ultimate bearing capacity reduces most by 18%

slip under the same load increases

and slip relative to the ultimate load reduces most by 12%. When corrosion occurs at the large end of stud

it has little effect on ultimate bearing capacity of push-out specimens

but deformation performance of stud shear connectors is affected seriously.