This document specifies three test methods for the estimation of the freeze-thaw resistance of concrete with regard to internal structural damage. It can be used either to compare new constituents or new concrete compositions against a constituent or a concrete composition that is known to give adequate performance in the local environment or to assess the test results against some absolute numerical values based on local experiences.Extrapolation of test results to assess different concrete i.e. new constituents or new concrete compositions requires an expert evaluation.NOTE Specification based on these test methods should take into account the behaviour o