It must be emphasised that concrete structures very rarely fail due to lack of built-in strength. However, this misplaced emphasis on strength alone, and the false thinking that durability of concrete materials and concrete structures is a by-product of compressive strength is fundamentally flawed and unacceptable and not consistent with specified requirements. It is recognised that most concrete requires a minimum level of strength for structural design purposes irrespective of the application. Despite this emphasis on durability of concrete, however, a significant number of stakeholders are still under the misconception that strength alone is the only specified criterion which can ensure quality, durability and final acceptance of concrete. Durability of concrete has been at the forefront of concrete technology and worldwide attention for over three decades due to the premature deterioration of many concrete structures resulting in reduced service life and expensive maintenance and rehabilitation.
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