The one-dimensional free swell test (ASTM D4546-14) is used to measure the free 1-D swell of cohesive soils using a conventional consolidation cell setup. Tests are performed on a compacted specimen in the consolidation cell and then the seating pressure of 1 kPa is applied. During the swell test, the compacted specimen is fully submerged with distilled water in the consolidation cell with a seating load of 1 kPa until the swelling is completed. Results from the test predict the swell characteristics of the soils.
The 1-D free swell test (ASTM D4546-14) is routinely employed in geotechnical engineering practice to assess quantitatively the swelling potential of undisturbed or remolded clays, and to guide the design of surface structures on these soils.
The free 1-D swell of cohesive soils
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