Early age autogenous shrinkage cracking risk of an ultra-high performance concrete (UHPC) wall: Modelling and experimental results

Ultra-High Performance Concrete (UHPC) exhibits high autogenous shrinkage (AS) which significantly increases the risk of early age cracking. To predict risks cracking environmentally friendly CEM III-based UHPC, a numerical model originally developed for crack assessment ordinary concrete, has been further and applied on demonstration wall with cracking, cast non-deforming slab. The design was determined through simulation using different parameters, resulting from specific experiments performed desired concrete mixture. Early parameters were obtained tests Temperature-Stress Testing Machine (TSTM). Finally, this UHPC built, occurring strain deformations recorded in real time fiber optic (SOFO) sensors embedded wall, measurements taken demountable mechanical gauges (DEMEC). Restrained same mixture ring tests. A comparison between results proved that proposed is suitable predicts well appearance. it shown values along height are influenced by degree restraint.