This paper presents the results of an experimental study wherein circular spirally-reinforced concrete columns were subjected to accelerated corrosion while sustaining a constant service compressive load. Two types of specimens were used in the experimental program: type CV, where vertical…
This paper presents the results of an experimental study wherein circular spirally-reinforced concrete columns were subjected to accelerated corrosion while sustaining a constant service compressive load. Two types of specimens were used in the experimental program: type CV, where vertical reinforcement was corroded and isolated from non-confining spiral reinforcement, and type CS where spiral reinforcement was corroded and isolated from the vertical reinforcement to study the effect of confinement. The cracking initiation, pattern, and widening of the concrete cover were monitored for ten months, and relations obtained between the crack widening and propagation and the elastic shortening of the column and steel mass loss were established. The cracking pattern was found to be wider and in the form of longitudinal cracks along the verti- cal bars in type CV columns, but more random and distributed over the surface and not as wide in type CS columns.