The destruction of concrete and mortar in environments rich in sulphates and carbonates is termed sulphate attack: in terms of topical chemical changes, it is attributed to thaumasite1 added to ettringite. The scope of sulphate ingress (as opposed to durability) into concrete has been recorded based on a decrease of flexural strength, changes in length, and observation. Phase changes studies have confirmed beyond doubt the relevance and role of thaumasite and thaumasite sulphate attack (TSA) to concrete, but the latter must not be overestimated. Thus, the amount of thaumasite in destructed concrete bodies, as well as quantification of the TSA...