Comparative Study on the Durability of Pile, Beam and Slab Reinforced Concrete Structure in Marine Environment

Abstract

The durability of coastal reinforcement suffers serious threaten by the aggressive chloride in marine environment. The repairment of structures under service or new construction design has become an important part with increasing the requirement of long service lives of infrastructure, while the applied repairment should be inconsistence with the corrosion condition of different concrete structure in the port. Herein, this paper comparatively discusses the various deterioration level of pile, beam and slab under the same marine environment, and provide the guiding principles for further repairment. The results show that the beam structure exhibits the worst performance among three typical reinforcement structures. The exposed rebars of beam structures are seriously corroded due to the chloride attack and result in low corrosion potential and serious concrete spalling. In contract, the slab structure exhibit better durability with intact appearance, low chloride penetration and high corrosion potential.