Title: Application of the Incremental Core-Drilling Method to Determine In-Situ Stresses in Concrete

Author(s): Christopher Trautner, Michael McGinnis, and Stephen Pessiki

Publication: Materials Journal

Volume: 108

Issue: 3

Appears on pages(s): 290-299

Keywords: core test; displacement; nondestructive; stress

DOI: 10.14359/51682494

Date: 5/1/2011

Abstract:
The incremental core-drilling method (ICDM) is a nondestructive technique to assess in-situ stresses in concrete. These stresses may be constant or vary through the thickness of the concrete member under investigation. In this method, a core is drilled into a concrete structure in discrete increments. The displacements that occur locally around the perimeter of the core at each increment are measured and related to the in-situ stresses. This paper presents results from experimental tests in which simple concrete beams were subjected to controlled loads and in-situ stresses measured via ICDM were compared to known stress distributions.