Investigation on the Influence of Concrete Pores on Steel Corrosion Process

Concrete pores on the steel/concrete interface have a great influence on the corrosion process of steel bars. The effects of these pores on the corrosion of steel bars are observed and explored in this paper. The specimens which are in the same size and concrete proportion but have a different curing and exposure history are compared and investigated. This paper mainly observes the process of corrosion products filling into macro pores (10-4-10-2m in diameter) which including compaction pores (10-3-10-2m in diameter) and air voids (10-4-10-3 m in diameter). These pores have different effect on the steel corrosion process, and these influences in both natural environment and artificial environment are discussed in this paper