ABSTRACT
A suction and stress controlled calibration chamber has been developed and is used to conduct a series of cone penetration tests in unsaturated soils. The challenges associated with the use of the new equipment are discussed in detail including the preparation of samples with repeatable properties, and application of uniform suction throughout samples. Results of select cone penetration tests and the post test analyses of the results imply the success of the testing system. Interpretation of the test data is presented highlighting the effect of suction on penetration resistance.
