TheSulfate Soundness 8″ Sieve Holderholds up to seven stacked Sample Sieves, depending on sieve height. Stainless steel frames allow optimum fluid circulation. Handles lock upright, but fold for easy loading into drying ovens.

Soundness testing of aggregate requires repeated immersion cycles in sodium sulfate or magnesium sulfate solution, followed by drying. Rehydration of the salts simulates expansion of freezing water. Samples are then washed, dried and sieved to determine percentage of loss from original sample.

Sample Sieves holding aggregate specimens are stacked into Sieve Holders. The Holders are then immersed in Solution Buckets containing sulfate solution. The Refrigerated Circulator and Water Bath Tank need only be used if the temperature of the sulfate solution cannot be maintained at the specified 70F (21C).

MeetsTest Methods:
AASHTO T104
ASTM C 88
CALIFORNIA 214
PTM 510