Service Life Prediction of Precast Concrete Structures Exposed to Chloride Environment

Table 2

Distributions of the input parameters.

Parameter	Unit	Mean	COV	Distribution	Reference
Accumulation coefficient of surface chloride,	%/a	0.04	0.5	Log-normal	[24, 27]
Maximum accumulation time,	a	15	—	Constant	[24]
Critical chloride content,	%	0.12	0.6	Log-normal	[47]
Diffusion coefficient,	mm^2/s	Variable	0.2	Log-normal	[27]
Cover thickness,	mm	30	0.05	Normal	[27]
Temperature,	°C	20	0.02	Normal	—
Longitudinal reinforcement diameter,	mm	18/20	0.01	Normal	[41]
Stirrup diameter,	mm	10	0.01	Normal	[41]
Column width,	mm	400	0.02	Normal	[41]
Beam height,	mm	400	0.02	Normal	[41]
Beam width,	mm	250	0.02	Normal	[41]
Concrete strength,	MPa	30	0.2	Log-normal	[41]
Steel yield strength,	MPa	335	0.05	Log-normal	[41]
Distance between stirrups,	mm	100	0.1	Normal	—
Frictional coefficient of interface,	—	0.6/1.2	—	Constant	[36]
Axial force,	kN	300	—	Constant	—