EFFECTS OF LOADING HISTORY ON FRACTURE PROPERTIES OF CONCRETE

A static fracture process zone (FPZ) model, which describes the nonlinear relationship between the crack-closure stress and the coexisting crack-opening displacement, was used to predict the effects of sustained and cyclic loading on crack propagation and fracture for concrete in tension. This study found that when plain concrete was subjected to an incremental tensile displacement loading, microcracks continued to grow for more than 1 hr after that increment was first applied. Such a process of slow damage accumulation is the cause of increases in deformation and crack length for concrete in the tensile zone of specimens subject to cyclic or sustained loadings. This conclusion is consistent with the results for previous studies on concrete fracture under compressive loading.

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• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • AKUTAGAWA, S
  • Jeang, F L
  • Hawkins, N M
  • Liaw, B M
  • Du, J
  • Kobayahsi, A S
• Publication Date: 1991-4

Media Info

• Features: Figures; References;
• Pagination: p. 170-180
• Serial:
  • ACI Materials Journal
  • Volume: 88
  • Issue Number: 2
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Concrete; Cracking; Forecasting; Fracture mechanics; Loads; Microcracking; Repeated loads
• Uncontrolled Terms: Concrete cracking; Crack propagation; Fracture; Microcracks
• Old TRIS Terms: Loading history
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00607453
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 30 1991 12:00AM