Reports from national road authorities have indicated a significant interaction between the damage mechanisms of ASR and the frost resistance and freeze-thaw durability of concrete.
This IGF project aimed to systematically investigate the impact of deleterious ASR on concrete's frost and freeze-thaw resistance, and assess its practical relevance. The aim was to define the criteria and threshold values at which a significant reduction in frost or freeze-thaw durability could be expected.
The Stiffness Damage Test is an internationally applied method that is new to Germany. It enables the precise quantification of concrete damage. Tests on laboratory concrete samples and cores taken from damaged motorways revealed that the ratio of compressive strength to modulus of elasticity in damaged concrete increasingly deviates from the specified relationship in DIN EN 1992-1-1 [1] as the level of damage increases.