Drilling and Insitu Tests

Sand Cone Test


The Sand Cone Test is a sand replacement method for determining the field unit weight or the in-situ density of natural or compacted soil. In this test, a hole is excavated in the site where the soil has been compacted and the dry weight of the soil can be obtained by determining the weight of the moist soil and the moisture content. The volume for the hole excavated is calculated by reintroducing the sand into the hole and then the dry unit weight of compaction is calculated by dividing the dry weight of the soil by the volume of the hole. This test method is applicable for soils without appreciable amounts of rock or coarse materials in excess of 1 1/2 in. (38 mm) in diameter. The main application of this test is the cases like embankment and pavement construction; this is basically a quality control test where a certain degree of compaction is required. This test is performed in accordance with the ASTM 1556-07.

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