Test Method Title
Standard Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions
Reference Number
ASTM D3080
Material
Soil
Test Property
Shear Strength, Mohr's strength envelope
Description of Test
This test method consists of placing the test specimen in the direct shear device, applying a predetermined normal stress, providing for wetting or draining of the test specimen, or both, consolidating the specimen under the normal stress, unlocking the frames that hold the test specimen, and displacing one frame horizontally with respect to the other at a constant rate of shearing deformation and measuring the shearing force and horizontal displacements as the specimen is sheared.
Number of Test Specimens
3
Test Specimen Size
2.5 in diameter x 1 in in height (fine- grained) or 12 in x 12 in x 6 in (if coarse-grained)
Keywords
Compacted specimens, consolidated, direct-shear test, drained test conditions, Mohr strength envelope, shear strength, undisturbed