Unconfined Compressive Strength

Unconfined Compressive Strength (UCS) is a quick and simple test to determine the undrained shear strength of cohesive soils. An undisturbed or remolded soil sample is loaded in an unconfined condition at a strain rate of 0.5 to 2% per minute until failure. The UCS test is easy to perform and requires less time for sample preparation than other tests. Karol-Warner offers the following Unconfined Compression test equipment:

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• Load Frames are suited to the strain rate and loading requirements of UCS testing for accurate test results. Load & Displacement Measurement components are purchased separately to configure basic load frames for unconfined compression or a variety of other laboratory soil tests. The strain rate of these accurate and versatile units is accurate to ±1% of setpoint, and the large, adjustable frame openings accommodate many different types of testing fixtures.
• Unconfined Compressive Strength Data Acquisition Software records specimen information and real-time test data, calculates results, then prepares reports following ASTM and AASHTO requirements. Additional components are required for operation.
• Load & Displacement Measurement components measure testing forces and deformation or displacement of the sample. Your choice of analog or digital elements mount easily to load frames or testing fixtures.
• Sample Preparation products ensure correct preparation of samples for loading.
• 3in Platens for Unconfined Compressive Strength are upper and lower platens for testing unconfined compressive strength of cohesive soils.
• Plastic Discs for Unconfined Soils Test are placed on the ends of a soil specimen during testing.