Presenter Information

Chad Beardslee


Civil, Architectural and Environmental Engineering

Research Advisor

Luna, Ronaldo

Advisor's Department

Civil, Architectural and Environmental Engineering


In recent years in-situ testing has become a popular means of testing soil due to its ability to provide immediate soil information and at a more reasonable cost than previous testing methods. One such test which has gained a lot of recent notoriety in the United States is the piezocone penetrometer test (PCPT). The PCPT is capable of measuring numerous soil parameters simultaneously and much research is ongoing to develop more correlations using the PCPT. The objective of this study was to look at factors affecting pore pressure dissipation data taken in the field using a PCPT as well as conduct pore-pressure dissipation tests in the lab and field to provide groundwork for future research in determining correlations between the coefficient of consolidation and permeability. In order to evaluate factors affecting pore pressure dissipation tests, data provided by the Missouri Department of Transportation (MoDOT) was reviewed and interpreted according to research already performed in this particular field of Geotechnical Engineering. Data was obtained from a bridge project where part of the site investigation required numerous PCPT be perf om1ed and surveys of pore pressure, cone tip resistance, and sleeve friction were obtained during each test. Dissipation tests were run at a variety of depths during select PCPTs which provided this researcher useful data to analyze. An experimental program was also developed in which cone penetration tests were performed in the lab and field. While using UMR's large diameter consolidometer for silts and tank to work with sands, methods for performing dissipation tests were researched and then steps and factors affecting these test methods were varied in numerous lab dissipation tests.

Presentation Type

Oral Presentation

Document Type


Presentation Date