Test Method Title
Plastic Fines in Graded Aggregates and Soils by Use of the Sand Equivalent Test
Reference Number
AASHTO T 176
Material
Aggregate
Test Property
Sand Equivalent
Description of Test
A measured volume of soil or fine aggregate and a small quantity of flocculating solution are poured into a graduated plastic cylinder and are agitated to loosen the clay-like coatings from the sand particles in the test specimen. The specimen is then irrigated using additional flocculating solution forcing the clay-like material into suspension above the sand. After a prescribed sedimentation period, the height of flocculated clay is read and the height of sand in the cylinder is determined. The sand equivalent is the ratio of the height of sand to the height of clay times 100.
Number of Test Specimens
2
Test Specimen Size
100 g
Keywords
equivalent, Sand