Water-Induced Swelling Displacements in Core Drilling Method

This paper discusses the nondestructive technique of core drilling to evaluate stresses in concrete. Core drilling measures the displacements found near a hole drilled in concrete and relates this to stresses present in the structure by using elasticity theory. During core drilling, the introduction of water causes concrete to swell. These swelling displacements directly lead to errors in estimating the stresses. In this paper, the author provides a way to correct these water-induced swelling displacement errors. Using the values presented in the research literature as a basis, the author estimates the depth of water penetration and the swelling strain due to water exposure. The apparent stresses are estimated using finite element modeling. Results, which are applied to an earlier non-related hole-drilling investigation, show that proper accounting for water-induced swelling displacements significantly improves accuracy in prediction.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Authors:
  • McGinnis, Michael J
  • Pessiki, Stephen
• Publication Date: 2007-1

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Illustrations; References; Tables;
• Pagination: pp 13-22
• Serial:
  • ACI Materials Journal
  • Volume: 104
  • Issue Number: 1
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Accuracy; Boreholes; Concrete; Depth; Dislocation (Geology); Elasticity (Mechanics); Errors; Estimation theory; Evaluation and assessment; Finite element method; Literature reviews; Mathematical models; Mathematical prediction; Measurement of specific phenomena; Strain (Mechanics); Stresses; Structures; Swelling; Theory; Water; Water in concrete
• Subject Areas: Bridges and other structures; Data and Information Technology; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01045280
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 22 2007 5:27AM