The Structural Engineer > Archive > Volume 77 (1999) > Issues > Issue 4 > The Structural Implications of the Thaumasite Form of Sulfate Attack
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The Structural Implications of the Thaumasite Form of Sulfate Attack

Sulfate attack of concrete has long been recognised and is minimised in the UK by following best practice guidance. Since 1990, however, a few cases of a new form of attack - the thaumasite form of sulfate attack (TSA) - have been discovered in buried concrete. Deterioration of the concrete foundations to three domestic properties in the Cotswolds area was reported by the Building Research Establishment (BRE). During 1998, TSA was discovered in the foundations of a number of 30-year old bridges on the M5 in Gloucestershire. The Thaumasite Expert Group