This International Standard specifes principles and recommends procedures for the verifcation of the durability of concrete structures subject to:- known or foreseeable environmental actions causing material deterioration ultimately leading to failure of performance;- material deterioration without aggressiveness from the external environment of the structure, termed self-ageing.NOTE The inclusion of, for example, chlorides in the concrete mix might cause deterioration over time without the ingress of additional chlorides from the environment.This International Standard is intended for use by national standardization bodies when establishing or validating their requirements for durability of concrete structures. It may also be applied:- for the assessment of remaining service life of existing structures; and- for the design of service life of new structures provided quantifed parameters on levels of reliability and design parameters are given in a national annex to this International Standard.Fatigue failure due to cyclic stress is not within the scope of this International Standard.