THE MECHANICAL PROPERTIES OF CORRODED REINFORCING STEEL BARS COLLECTED FROM THE RAILWAY REINFORCED CONCRETE VIADUCTS DETERIORATED BY CARBONATION AND MIXED CHLORIDE

Abstract

Corrosion of reinforcing steel leads to cracking of concrete and subsequent loss on the load-carrying capacity of a reinforced concrete member. This study was conducted to evaluate the relationship between the degree of corrosion of steel bars in concrete on their mechanical properties. The steel bars used for tests were collected from the railway reinforced concrete viaducts deteriorated by carbonation and mixed chloride. The results indicate that the degree of reinforcement corrosion influences their mechanical properties. Futhermore, their mechanical properties of corroded reinforcing bars can be calculated from minimum reinforcing steel diameter measured on site.