Journal Published Online: 29 May 2020
Volume 44, Issue 3

Selection of Thermal Integrity Data Regression Parameters

CODEN: GTJODJ

Abstract

Thermal integrity profiling (TIP) is a nondestructive method of evaluating the as-built features of cast-in-place concrete foundation elements such as bored piles, drilled shafts, continuous flight auger piles, barrettes, dams, or diaphragm walls. The technology measures the temperature of curing concrete along the length of the element to detect the presence (or absence) of hydrating cement, alignment of the reinforcing steel, and rebar cover thickness. Like many integrity methods used for drilled shafts, direct comparison of local concrete conditions are made relative to the overall normal or average concrete conditions with two exceptions: the top and bottom of the element, which cannot be directly compared with the rest of the shaft temperature without adjusting those measurements to account for end effects. This paper outlines the selection of the end adjustment parameters to ensure the top and bottom shapes are properly defined. The presented data regression process is based on both numerical model findings as well as the statistical findings from 232 TIP-tested shafts on the same project.

Author Information

Mullins, Gray
University of South Florida, Tampa, FL, USA
Johnson, Kevin R.
Earth Tech LLC, Land O’ Lakes, FL, USA
Winters, Danny
Foundations & Geotechnical Engineering LLC, Plant City, FL, USA
Hilferding, Hida
Department of Civil Engineering, University of South Florida, Tampa, FL, USA
Kupselaitis, Kurt
Earth Tech LLC, Land O’ Lakes, FL, USA
Pages: 15
Price: $25.00
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Details
Stock #: GTJ20190084
ISSN: 0149-6115
DOI: 10.1520/GTJ20190084