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| A Direct Simple Shear machine or DSS uses a reinforced membrane and a fixed normal load application to maintain constant volume throughout shearing of the specimen. This creates an undrained state on the specimen. DSS results are often helpful in slope stability problems. The full testing procedure for the direct simple shear is available in the standard ASTM D6528. A Thermal Resistivity Probe measures the soils resistance to heat transport. The soil thermal resistivity is important in determination of cable ratings when burying power cables. This information is commonly used in wind farms. The thermal resistivity probe also reads the thermal conductivity of a soil, which is simply the inverse of the soil's thermal resisitivity. Thermal conductivity properties are often needed in construction of geothermal heatpumps. Testing procedural information is available in the following standards: ASTM D5334. CBR testing has been added to our list of services. We have increased our capacity for running CBRs to 21 specimens. The California Bearing Ratio test is usually run in conjunction with a standard proctor test. The CBR test requires a 4 day soaking period, generally we are able to provide a week for a turn around time. We run our CBR test in general accordance with ASTM:D1883. Fully Automated Stress Path Triaxial Testing. We have 5 fully automated triaxial load frames that not only allow us to run standard triaxial testing (Consolidated Undrained [CU], Consolidated Drained [CD], and Unconsolidated Undrained [UU]), but also provide Stress Path Testing complete with Ko consolidation. Combining our latest load frame with a constant rate of consolidation test chamber provides our clients with a CRS consolidation test. |
| If you are interested in either of these tests please call or email us. We would be happy to meet all of your testing needs. |