GGU-TRIAXIAL: "New" menu item

All data entered is deleted and the following dialog box is displayed, which also appears when the program is started.

If the "All diagrams on one sheet" check box is activated an empty A3 format page with all available diagrams is displayed on the screen when the dialog box is closed. Otherwise an A4 format output sheet is displayed. If the check box is deactivated the various diagrams are visualised consecutively on several A4 sheets.

You can choose from four types of test:

• Consolidated, drained test (D test)
  After saturation and consolidation are complete, and keeping the drains open and the saturation pressure constant, the sample is sheared slowly enough to allow volume change in the sample without the development of pore water pressure, which can influence the test results.

• Consolidated, undrained test (CU test)
  Once consolidation and saturation are complete, uptake and ejection of pore water during shearing is prevented by closing the pore water system. The resulting pore water pressure is measured. Changes in load and deformations are performed so slowly that the pore water pressure can be uniformly distributed within the sample.

• Consolidated, drained test with constant volume (CCV test)
  The CCV test is a shear test on consolidated and drained samples, in which volume changes are prevented by controlling at least one total principal stress at constant pore water pressure (saturation pressure).

• Unconsolidated, undrained test (UU test)
  The UU test is a shear test on undrained cohesive samples, the water content of which is the same as the water content of the soil. The samples are subjected to various cell pressures with the drainage closed and are then sheared, also with the drainage closed.

Once the test type has been decided the dialog box is closed by clicking the appropriate test button.