Finite element modelling of UHPC under pulsating load using X-ray computed tomography based fiber distributions

Abstract The benefits of including fibers in ultra-high performance concrete (UHPC) are attributed to their good bond with the matrix and, hence, an optimal utilization properties. At same time, though, fiber reinforcement may contribute anisotropy composite material and induce weak areas. influence fibers’ orientation on properties is a matter current scientific discourse it known play vital role structural design. In case studies presented herein, mechanical laboratory tests using pulsating load regimes UHPC strength more than 200 MPa were simulated by use finite element models. orientations measured for each test sample prior failure X-ray computed tomography (CT) scanner, these explicitly implemented into model. paper discusses methodology merging data retrieved CT image processing state-of-the-art FE simulation techniques Moreover, scanning was carried out throughout testing procedure, which further enables comparison models terms damage propagation patterns. results indicate that overall configuration behavior samples can be realistically modelled validated proposed CT-FE coupling, enhance analysis design process elements produced steel reinforced materials.