Characterization of Bending and Tensile Behavior of Ultra-High Performance Concrete Containing Glass Fibers

摘要

Ultra High Performance Concrete (UHPC) is used to design structural elements with unique combinations of aesthetic, lightness, self-placing and ductility properties. The difficulty to design such a ductile composite is obtaining an optimum compromise between reinforcements, cementitious matrix strengths, rheology and costs. An ultra high performance reinforced concrete containing glass fibers (GF-UHPRC) is described for thin plate geometries. Including complete mechanical characterization, based on four point bending tests, and reverse analyses to extract the post-cracking behavior in tension (e.g. the tensile strength versus strain relationship of the glass fibers). The results of accelerated aging tests in 50°C water showed that its durability and ductility were maintained.