Experimental Analysis of Crack Development of an UHPC Wall Element Under Shear Loading

Abstract

UHPC (Ultra High-Performance Concrete) is an innovative material that enables design of lightweight and structurally optimized, long-lasting structures. In this paper, an experimental analysis of precast webs of a “butterfly web” box-girder bridge on scaled-down specimens is presented. Pretensioned beam specimens were analysed in 2 variants–with continuous web and with lightened web. Based on the experimental results both variants are compared and numerical and material models suitable for UHPC modelling in software SCIA Engineer are presented. In SCIA Engineer the modified Mazarz material damage model is implemented which is applicable for material with residual strength typical for FRC and UHPFRC.