ABSTRACT: There is no doubt that, over the past two decades, we have made enormous advances in the
understanding and practice of concrete durability. Spurred by the often experienced early deterioration of reinforced
concrete structures, with high capital investment for repair and rehabilitation, conceptions of design for
durability have gained an increasingly higher level of importance in recent years. Durability design is beginning
to be considered of equal importance as design for safety and serviceability. Nevertheless, durability concerns
remain and early deterioration still attracts much expenditure. This paper is aimed at identifying important
developments made in the field of concrete durability during the past two decades. Based on current design
practice and current knowledge, future research and development needs are discussed, focusing on the influences
of constituent materials, deterioration prevention methods, service life modelling of reinforced concrete
structures, and performance-based test methods.