Closed-Form Moment-Curvature Expressions for Homogenized Fiber-Reinforced Concrete

The authors present, for cement-based composites with homogeneously distributed reinforcement moment-curvature response, a closed form solution. The derivation has a uniaxial material constitutive response using quadratic and piece-wise linear segments' parametric representation. The authors studied compressive and tensile constitutive relational effects on moment-curvature response and observed that the most important parameters were tensile stiffness from first cracking to ultimate tensile strength to ultimate tensile strain. A beam's flexural load-deformation response under four-point loading conditions is simulated by combining crack localization rules with the moment-curvature relations. Underprediction of flexural results through direct use of uniaxial tension stress-strain response is indicated through model simulations, and is attributed to effective volume differences in material subjected to critical stress. Model simulations can match experimental data when a single scaling factor is applied to material models.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Authors:
  • Soranakom, Chote
  • Mobasher, Barzin
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 351-359
• Serial:
  • ACI Materials Journal
  • Volume: 104
  • Issue Number: 4
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Cement; Composite materials; Compressive strength; Curvature; Engineering moments; Fiber reinforced concrete; Flexure; Homogeneity; Mathematical models; Simulation; Tensile strength; Tension
• Uncontrolled Terms: Closed form solutions; Experimental data; Moment-curvature response; Reinforced
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01055392
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 23 2007 1:00PM