Confined Tension and Triaxial Extension Tests on Eglin High-Strength Concrete
Interim rept. Sep 2013-Sep 2014
APPLIED RESEARCH ASSOCIATES INC ALBUQUERQUE NM
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The Air Force Research Laboratory AFRL has a need to conduct basic research to understand and implement the necessary physics for materials of interest that increase the accuracy of Finite Element F.E. material models. All concretes exhibit higher strength in compression than in tension, therefore it is critical to understand the tensile properties of such materials under varying confinements. These physics need to be accurately modeled in constitutive frameworks i.e., models within finite element codes to correctly simulate concrete behavior. This report documents well-controlled quasi-static TriaXial Extension TXE and Confined Tension CT experiments on Eglin high-strength concrete using a new experimental apparatus design by Applied Research Associates, Inc., Randolph, VT. The experiments developed the tensile failure envelope for this particular material for high-pressure loading up to a maximum mean stress and deviatoric stress of 250 MPa and 275 MPa, respectively. It was found that the tensile failure envelope was distinctly different from that of the compression failure envelope.
- Ceramics, Refractories and Glass
- Construction Equipment, Materials and Supplies