Spoluřešitelé:
Anotace:
The proposed projects deals with testing of the ultra high performance concrete (UHPC) under dynamic loading. This modern cementitous composite material has potential in wide range of applications such as civil engineering (buildings, bridges, tower blocks), parts of the transport infrastructure, or urban furniture. UHPC has excellent mechanical properties such as damage tolerance, fracture toughness and durability, which leads to possible use of this material in special application such as marine structures, underground spaces, nuclear waste containers, protection of critical infrastructure, mobile anti-vehicle barrier and national defence and military facilities. In this special applications is the material subjected to different modes of loading and different loading rates from creep, quasi-static to intermediate and high strain rates. Behaviour of the material in dynamics isn't properly described. Therefore is the proposed project subjected especially in testing of this material under elevated strain rate using a high speed motorized linear stage and Split Hopkinson Pressure/ Tensile Bar (SHPB/SHTB). Digital image correlation will be used to analyse the displacement and strain fields for support of the standard instrumentation of the device. Advanced methods of the instrumentation of these experimental devices include state-of-the-art lab-based in-situ X-ray imaging which allow insight into the deformation behaviour of the material. These results can be used for description of the internal effects and processes.
Pracoviště:
Rok:
2023 - 2024
Program:
Studentská grantová soutěž ČVUT - SGS23/134/OHK2/2T/16