DFI Journal - The Journal of the Deep Foundations Institute

Volume 4, Issue 2, January 2010

Papers are only available to members. If you are a member, please click on the "Login" link at the top of the site. You may use your DFI login.

If you are not a member, click here join.

Please click here to complete purchase by clicking on the PDF $25 icon and completing the payment form. The paper will be emailed to you within 48 hours.

Thermal Integrity Profiling of Drilled Shafts

Gray Mullins, Ph.D., P.E.


The construction of drilled shafts as well as other cast in place foundation alternatives relies heavily on good practices from the contractor, engineer, and inspector in order to produce a quality foundation element. As many of the installation methods involve blind concreting processes, it is difficult to be certain of an intact concrete mass of the intended dimensions. A new integrity test has been developed that provides additional insight into the integrity of drilled shaft concrete. By measuring the temperature throughout the shaft via standard access tubes, the measured temperature profile can be compared to the normal signature associated with a shaft of the specified size. This article provides an overview of the new method development, test procedure, analysis, and results.

shaft integrity hydration temperature