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It is used to measure volume shrinkage of Undisturbed soil and the compaction clay soil In the process of water loss. It is the index to measure shrinkage rate and shrinkage coefficient of Undisturbed soil and.
The ratio between One-way shrinkage of soil specimen and original height of specimen is Linear Shrinkage rate. The ratio between volume shrinkage mass when Shrinkage of soil reaches stability and the original volume is bulk shrinkage. shrinkage coefficient is Linear Shrinkage rate when the water content of specimen reduces every 1%.
Technical parameters
| cutting ring/ sample area | 61.8×20mm |
| perforated plate | diameter 70mm thickness multihole |
| Measuring plate | 10mm thickness 4mm |
| dial indicator | 0-10mm |
| Earth-moving machine | diameter 61.8mm |
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