First application of the 3D-MHB on dynamic compressive behavior of UHPC
1 DynaMat Laboratory, University of Applied Sciences of Southern Switzerland, 6952 Canobbio, Switzerland
2 Department of Structural, Geotechnical and Building Engineering – Politecnico di Torino, 10129 Torino, Italy
3 Dynalab-Impact Technologies, 21014 Laveno Mombello, Italy
a Corresponding author: firstname.lastname@example.org
Published online: 7 September 2015
In order to study the dynamic behaviour of material in confined conditions a new machine was conceived and called 3D-Modified Hopkinson Bar (3D-MHB). It is a Modified Hopkinson Bar apparatus designed to apply dynamic loading in materials having a tri-axial stress state. It consists of a pulse generator system (with pre-tensioned bar and brittle joint), 1 input bar, and 5 output bars. The first results obtained on Ultra High Performance Concrete in compression with three different mono-axial compression states are presented. The results show how the pre-stress states minimize the boundary condition and a more uniform response is obtained.
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