Data supporting: Experimental study and analytical method of reinforced UHPFRC-NC composite beams considering shrinkage

Dataset for paper: Experimental study and analytical method of reinforced UHPFRC-NC composite beams considering shrinkage This dataset originates from an experimental study investigating the effect of shrinkage strain on the structural behavior of composite beams made of a reinforced ultra-high performance fiber-reinforced concrete (UHPFRC) bottom layer with normal strength concrete (NC) on top. Five composite beams were tested under four-point bending, varying the layer heights and reinforcement areas to examine the impact of the UHPFRC/NC ratio and reinforcement ratio on flexural performance.

Distributed fibre optical sensors (DFOS) were installed on the top side of the tensile reinforcement before casting to measure steel rebar deformations due to shrinkage restrained by the reinforcement and differing shrinkage behaviors of the two concrete layers. During loading, data from four load cells, five displacement transducers, and five strain gauges installed at the bottom of each tensile reinforcement were recorded, alongside continuous DFOS measurements.