Integrity testing of concrete deep foundation with focus on thermal methods
Simon Gudina
In the proceedings of: GeoSt. John's 2019: 72nd Canadian Geotechnical ConferenceSession: Pile Foundations
ABSTRACT: Integrity test methods for concrete deep foundations are reviewed. The most common and traditional non-destructive evaluation or quality assurance for concrete foundations have been methods involving Cross-hole Sonic Logging (CSL) or its variant, Single-hole Sonic Logging (SSL), Gamma-gamma Logging (GGL), Sonic Echo (SE), and Impulse Response (IR). The latter two are generally known as Pile Integrity Testing (PIT) method. These conventional tests are generally carried out several days after completion of pile installation. In the last several years, a new quality assurance method for cast in place concrete deep foundations has been developed. It is based on concrete thermal behavior (concrete hydration) to assess the integrity of installed concrete deep foundations. This latest method is known as Thermal Integrity Profiling (TIP) and is covered in ASTM D 7949: Standard Test Methods for Thermal Integrity Profiling of Concrete Deep Foundations. Despite being a very recent development, TIP has been gaining widespread acceptance as a quick quality assurance method for concrete deep foundations. TIP test results can be available as early as 24 hours after concrete placement. Traditional and TIP methods are discussed with respect to their relative advantages and limitations. Current trends and status of TIP method in the USA, specifically with respect to state Departments of Transportation (DOTs) is reviewed. Finally, two case studies involving TIP testing are presented showing the effectiveness of the method in providing quality assurance at a very early stage and hence contributing to a timely completion of pile installation and subsequently to timely project completion.
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Gudina, Simon (2019) Integrity testing of concrete deep foundation with focus on thermal methods in GEO2019. Ottawa, Ontario: Canadian Geotechnical Society.
@article{Gudina_GEO2019_286,
author = Simon Gudina,
title = Integrity testing of concrete deep foundation with focus on thermal methods ,
year = 2019
}
title = Integrity testing of concrete deep foundation with focus on thermal methods ,
year = 2019
}