Research Article

Influences on Shotcrete Rebound from Walls with Random Roughness

Table 2

Orthogonal tables and range analysis results.

Experiment no.Surface tension (mN/m)Viscosity (mPa.s)Roughness (Ra, µm)Velocity (m/s)Spreading coefficient

16.3530.511.89
26.3971.522.2
36.31352.542.7
48531.543.4
58972.511.55
681350.522
710.5532.522.25
810.5970.543.1
910.51351.511.2