Mechanical Response of Barricade to Coupled THMC Behavior of Cemented Paste Backfill

International Journal of Concrete Structures and Materials

Table 1 Input parameters, boundary conditions and initial values used for validating the developed model.

	Field case 1	Field case 2
Initial CPB temperature	29 °C	25 °C
Environment temperature	29 °C	25 °C
Density of CPB	2050 kg/m³	1900 kg/m³
Density of concrete	2500 kg/m³	2263 kg/m³
Young’s modulus of concrete	30 GPa	30 GPa
Poisson’s ratio of concrete	0.2	0.2
q_max	2.19 W/kg	2.19 W/kg
β₁	2.6	2.6
β₂	0.667	0.667
β₃	3.0	3.0
α₀	0	0
τ	0.6 h	0.6 h
λ	30	30
X	− 8.173	− 8.173
Y	4.035	4.035
A	1.31	1.31
B	7.54	7.54
f₁-f₅	− 0.2, − 15,000, 7, − 11, 0.7	− 0.2, − 15,000, 7, − 11, 0.7
n	2.2	2.2
Mechanical module for the barricade
Top surface	Fixed	Fixed
Lateral sides (contact with rock)	Roller	Roller
Lateral sides (contact with CPB)	Free	Free
Lateral sides (contact with air)	Free	Free
Bottom side	Fixed	Fixed
Volume force	Gravity	Gravity

The reference studies (De Schutter and Taerwe 1996; Thompson et al. 2009, 2010; Abdul-Hussain and Fall 2011; Ghirian and Fall 2013; Cui and Fall 2016).