Test Method Title
Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate
Reference Number
ASTM C88
Material
Aggregate
Test Property
Soundness Durability
Description of Test
The washed, dry aggregate sample is separated into a series of particle size fractions (e.g., 3/8" to 3/4"). Each fraction is submerged in a saturated solution of sodium or magnesium sulfate (depending upon project specifications) for 16-18 hours. The fractions are then dried to constant weight. The process is then repeated for the specified number of cycles (per project specifications). The fractions are then washed, dried and weighed. The percent loss is then reported.
Number of Test Specimens
1
Test Specimen Size
Typically, about 4 kg, but determined from aggregate size and gradation
Keywords
Magnesium, Sodium, Soundness, Sulfate