12. Definition of Durability
Durability of concrete is vital for ensuring the longevity and functionality of structures, influenced by various factors such as permeability, water-cement ratio, and curing methods. The chapter highlights mechanisms of concrete deterioration, testing methods for assessing durability, and techniques to enhance durability through proper design and material choices. Emphasis is placed on modern approaches that integrate durability into the overall lifecycle assessment of concrete structures.
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What we have learnt
- Durability is defined as the ability of concrete to resist various deteriorating processes while maintaining its engineering properties.
- Factors such as permeability, water-cement ratio, curing, and the type of cement significantly influence the durability of concrete.
- Modern durability design practices integrate performance metrics and sustainability considerations to enhance the lifespan and resilience of concrete structures.
Key Concepts
- -- Durability
- The ability of concrete to withstand environmental actions, chemical attacks, and physical stresses without significant deterioration over its service life.
- -- WaterCement Ratio
- The ratio of water to cement in a concrete mix, which impacts its strength and permeability; a lower ratio typically results in enhanced durability.
- -- Chemical Deterioration
- Degradation of concrete due to chemical reactions, such as sulfate attack, carbonation, and chloride attack, which can compromise structural integrity.
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