Biaxial Tensile Behavior of the Reactive Powder Concrete

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Title: Biaxial Tensile Behavior of the Reactive Powder Concrete

Author(s): 0. Ple, E. Astudillo de la Vega, G. Bernier and 0. Bayard

Publication: Special Publication

Volume: 209

Issue:

Appears on pages(s): 369-388

Keywords: biaxial tensile behavior; digital image correlation; fibres; inclusion; reactive powder concrete

Date: 9/26/2002

Abstract:
Numerical and experimental studies or Keactive rowaer doncrete (RPC), reinforced by short steel fibres, under biaxial tensile loading are reported. A semi-analytical model using the Eshelby’s method of inclusion to describe elastic fields perturbation is employed to predict crack nucleation under biaxial tensile strain. A criterion of crack nucleation is investigated theoretically by considering a locally oriented mass of fibres embedded in an homogeneous matrix. An original biaxial crucifonn specimen is designed and fabricated by a systematic testing program guided by the results of a numerical simulation. A prototype machine names ASTREE (developed by SCHENCWLMT) is used in the biaxial test of cruciform specimens. An adaptive control test method was designed, and digital image correlation is employed to obtain the displacement field and the microstructural stress concentration. These preliminary observations support our theoretical analysis based on Eshelby’s inclusion and aims at a better understanding of the mechanisms involved in the RPC damage process.