ABSTRACT
This study reports on the influence of bleeding on the durability of reinforced concrete, especially horizontally placed steel bars in RC column specimens. This was examined through the use of insitu air permeability tests and electro-chemical tests. The results showed that air permeability coefficients measured in the upper parts of column specimen were relatively higher when the specimens were dried under room conditions, which was dependent on bleeding rate. Although the durability of horizontal steel bars was aggravated by bleeding in a form of segregation, which was confirmed by larger corrosion current density caused by chloride attack through dry and wet cycles, the adverse effect on the durability of horizontal steel bars was less prominent in fly ash mixtures tested in this study.
