Residual Strength of a High-Strength Concrete Subjected to Triaxial Prestress

Abstract

This study investigates simplified mechanical loading paths that represent more complex loading paths observed during penetration using a triaxial chamber and a high-strength concrete. The objective was to determine the effects that stress-strain (load) paths have on the materials unconfined compressive (UC) residual strength. The loading paths included hydrostatic compression (HC), uniaxial strain in compression (UX), and uniaxial strain load biaxial strain unload (UXBX). The experiments indicated that the load paths associated with nonvisible microstructural damage were HC and UX which produced minimal impact on the residual UC strength (less than 30 )while the load path associated with visible macro-structural damage was UXBX, which significantly reduced the UC strength (greater than 90 ). The simplified loading paths were also investigated using a material model driver code that was fitted to a widely used Department of Defense material model. Virtual experiment data revealed that the investigated material model overestimated material damage and produced poor results when compared to experimental data.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2023
Accession Number
AD1218098

Entities

People

  • Andreas O. Frank
  • Brett A. Williams
  • George H. Vankirk
  • Michael J. Roth
  • William F. Heard

Organizations

  • Engineer Research and Development Center

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Compressive Strength
  • Concrete
  • Department Of Defense
  • Engineers
  • Experimental Data
  • Materials
  • Materials Laboratories
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Shear Modulus
  • Shear Stresses
  • Test Methods
  • X-Ray Computed Tomography

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.