Constant-Rate-of-Strain and Controlled-Gradient Consolidation Testing

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Courtesy of ASTM International

Controlled-gradient (CG), constant-rate-of-strain (CRS), and conventional incremental-loading (STD) consolidation testing are compared and evaluated. Undisturbed samples of three soils common to Kentucky were used in the testing program. Results of 15 CG, 14 CRS, and 32 STD consolidation tests are evaluated. The feasibility of these new test methods for routine testing is briefly discussed and recommendations are made for refinements in testing procedures.

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