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Hochdynamische Materialeigenschaften von Ultrahochleistungsbeton (UHPC)

Material Properties of Ultra High Performance Concrete (UHPC) at High Strain Rates
 
: Nöldgen, M.; Millon, O.; Thoma, K.; Fehling, E.

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Beton- und Stahlbetonbau 104 (2009), Nr.11, S.717-727
ISSN: 0005-9900
ISSN: 1437-1006
Deutsch
Zeitschriftenaufsatz
Fraunhofer EMI ()

Abstract
Material Properties of Ultra High Performance Concrete (UHPC) at High Strain Rates The presented paper is a contribution to the material description of Ultra High Performance Concrete (UHPC) under high-speed dynamical loading conditions. Based on a series of Hopkinson-Bar experiments dynamical material parameters such as the Tensile Strength, Young's Modulus and Fracture Energy are derived at high strain rates of 10(2). s(-1). A comparison with the results of these parameters for normal and high strength concrete leads to a qualitative and quantitative evaluation of UHPC at high strain rates. With the extension of the established RHT material model for UHPC by the material's Fracture Energy and Stress-Crack-Opening-Relation the Hopkinson-Bar experiments are simulated appropriately.

: http://publica.fraunhofer.de/dokumente/N-113358.html