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Constant-Rate-Of-Strain And Controlled-Gradient Consolidation Testing, C. Thomas Gorman, Tommy C. Hopkins, Robert C. Deen, Vincent P. Drnevich
Constant-Rate-Of-Strain And Controlled-Gradient Consolidation Testing, C. Thomas Gorman, Tommy C. Hopkins, Robert C. Deen, Vincent P. Drnevich
Kentucky Transportation Center Research Report
Controlled-gradient (CG), constant-rate-of-strain (CRS), and conventional incremental-loading (STD) consolidation testing are compared and evaluated. Undisturbed samples of tbree soils common to Kentucky were used in the testing program. Results of 15 CG, 14 CRS, and 32 STD consolidation tests are evaluated. Feasibility of the new test methods for routine testing is briefly discussed and recommendations are made for refinements in testing procedures.
Computerized Analysis Of Stress-Strain Consolidation Data, E. Gregory Mcnulty
Computerized Analysis Of Stress-Strain Consolidation Data, E. Gregory Mcnulty
Kentucky Transportation Center Research Report
A computerized, mathematical algorithm is described and presented for analyzing the semilogarithmic stress-strain (time-independent) properties of standard, controlled-gradient, and controlled-rate-of-strain consolidation tests. This algorithm is an automation of manual graphical procedures currently used in engineering practice to obtain stress-strain information necessary for use in time-independent settlement analysis. The Casagrande and Schmertmann constructions are analytically represented to determine the preconsolidation stress and the in situ, compressibility coefficients of compression and expansion. Values for each of these parameters range between a probable and minimum value. The point of maximum curvature is determined for the Casagrande construction by use of the mathematical definition …