Comparison of Basic Laboratory Test Results with Sophisticated Laboratory and In-Situ Tests Methods on Soils in Southeastern Wisconsin

摘要

This study investigates all of the generated soils data in an attempt to use the more 'routine' laboratory tests to determine geotechnical design parameters (such as phiangle, cohesion, wet unit weight, unconfined compression, consolidation characteristics, etc.) that are typically obtained from more sophisticated laboratory tests or in-situ field tests. The test result data are analyzed to determine ranges of values, variations, trends, comparisons, etc. Since both routine and higher-level testing has been conducted, this comparison was made and correlations were developed that relate parameters for more sophisticated tests to those from simpler and more routine tests. Future design work in this area of the state could be based on more routine tests, while minimizing the need for more elaborate (and expensive) laboratory or in-situ tests. This is likely to lead to more economical subsurface investigations and greater confidence in soil properties The Wisconsin Department of Transportation (WisDOT) has committed to a large improvement program of the freeway system in southeastern Wisconsin. Thus, the results of this study may enable reducing the design costs associated with the future projects in this area.