Abstract
The thaumasite form of sulphate attack (TSA) concerns cements and concretes containing limestone and is attributed to the formation of thaumasite. This work deals with the confirmation of thaumasite formation in cement mortars. Three types of cement were examined: Portland cement and Portland limestone cement containing 15 and 30% mass/mass limestone. The specimens were cured at 5°C, for 12 months, in a 1.8% MgSO4 solution. The formation of thaumasite was checked and confirmed by XRD, TG and SEM. It was concluded that mortars containing limestone suffer from TSA at low temperature. The combination of XRD, TG and SEM leads to the positive identification of thaumasite and resolves the well known problem of thaumasite and ettringite confusion.
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Skaropoulou, A., Kakali, G. & Tsivilis, S. A study on thaumasite form of sulfate attack (TSA) using XRD, TG and SEM. J Therm Anal Calorim 84, 135–139 (2006). https://doi.org/10.1007/s10973-005-7198-2
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DOI: https://doi.org/10.1007/s10973-005-7198-2