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Rock free swelling rate expansion tester

The rock free swelling tester is suitable for determining the swelling properties of rocks containing easily hygroscopic minerals in their natural state, such as clay rocks. 

This test is the ratio of the radial and axial deformation of the specimen after immersion in water to the diameter and height of the specimen, expressed as a percentage.

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    Main technical parameters

    1. Micrometer range: 0-3mm accuracy 0.001mm

    2. Sink: 160 × 160 × 130mm

    3. Sample specifications: cylindrical body with a diameter of 50-60mm, with a height approximately equal to the diameter; The side length of the cube is 50-60mm, and both ends should be parallel and ground flat

    4. Dimensions: 500 × 500 × 150mm

    5. Weight: 50Kg

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