Table 1: Measured compressive strength of concrete and axial compressive ratio.

Test unit f1cu,m
/MPa 		f2cu,m
/MPa 		nt N
/kN
2-DW5-L2 41.4 44.2 0.15 1575
2-DW10-LN1 41.4 45.6 0.10 1072
2-DW12-LN2 49.7 41.2 0.25 2692

1. Cubic compressive strength of concrete of the precast slab.
2. Cubic compressive strength of concrete of the cast-in-situ.
Note: nt stands for the test axial compression ratio. The axial force N is calculated by the formula of N=nt(f1cu,mδ1/δ + f2cu,mδ2/δ), where δ1 is the volume of precast concrete, δ2 is the volume of cast-in-situ concrete, and δ is the total volume.