Chloride Ingress Resistant Concrete: High Performance Concrete Containing Supplementary Composites

1 Associate Professor of Structural Engineering College of Engineering, King Saud University Email: [email protected] Abstract – In Reinforced concrete structures chloride ion penetration is considered to be a major cause of corrosion of reinforcing bars. Conventional concretes fail to prevent the intrusion of moisture and aggressive ions adequately. The use supplementary cementing composite materials have been reported to increase the resistance of concrete to deterioration by aggressive chemicals such as chlorides. In this investigation various combinations of pulverised fuel ash and silica fume were incorporated as partial cement replacements for composite systems. To establish the resistance of these concrete types to chloride ion penetration ASTM C1202 chloride permeability test was used. Prediction models were developed, based on the experimentally obtained results, which enabled the establishment of isoresponse contours showing the interaction between the various parameters investigated.