Test and Study on Impact of Corrosion on Bond Force between Steel and Concrete
The corrosion of steel will have a bad impact on the safety of reinforced concrete structure. In severe cases, it may even be disastrous. In order to understand the impact of steel corrosion on the structure, tests are carried out to study corrosion and expansion rules of steel bars as well as the impact rules of corrosion on bond force between steel and concrete. The results show that wet and salty environment will result in steel corrosion; relatively minor corrosion will not cause expansion cracks of protection layers; when steel rust to a certain extent, it will cause cracks along the protection layer; when there exists minor corrosion in steel and the protection layer does not have expansion cracks, the bond force is still large and rapidly decreases as the corrosion rate increases.
Yusaku Fuji and Koichi Maru
X. F. He et al., "Test and Study on Impact of Corrosion on Bond Force between Steel and Concrete", Applied Mechanics and Materials, Vol. 36, pp. 176-181, 2010