Reinforced concrete structures durability

Service Life Assessment of Reinforced Concrete Structures: Tuutti model for service life assessment Variables influencing service life Initiation and propagation periods of steel rebar corrosion Identification of initiation time and propagation time Factors affecting initiation time: carbonation, chlorides Corrosion Mechanisms in Reinforced Concrete Structures: Carbonationinduced corrosion: Rate of carbonation propagation Factors affecting carbonation rate Evaluation of initiation time using carbonation coefficient Chlorideinduced corrosion: Localized corrosion due to chlorides Factors influencing initiation time Transport phenomena of chloride penetration Chloride binding in concrete Concrete Cover and Corrosion Protection: Concrete cover cracking as a limit state Factors affecting corrosion rate: oxygen, water content, humidity Steel rebar protection in an alkaline environment Importance of maintaining passivation condition Durability Design Approaches: Standard approach (EN 206): Identification of exposure conditions and degradation process Prescriptions for w/c ratio, cement content, cover thickness Performancebased approach: Real design based on degradation process models Consideration of environmental factors as loads References and Further Reading: Key references on material degradation, corrosion, and durability European projects like DuraCrete and FIB Model Code for Service Life Design Concrete degradation and reinforced concrete as related topics.