Reliability-Based Analysis of Recycled Aggregate Concrete under Carbonation

Table 3

Input parameters.

Principal variable	Secondary variable	Unit	Distribution	Values
Concrete properties—for all the models
w/c ratio	—	—	—	From 0.50 to 0.65
R	—	%	—	From 0 to 100%
fc	—	MPa	—	Evaluated with (23)
fib Bulletin 34 [18]
	—	(mm^2/y)/(kg/m^3)	Normal	μ (evaluated with (20));
k	—	mm/day^0.5	—	Evaluated with (19), coefficients in Table 1
kt	—	—	Normal	μ = 1.25; σ = 0.35
εt	—	—	Normal	μ = 315.5; σ = 48
kc	tc	days	—	3
	bc	—	Normal	μ = −0.567; σ = 0.024
ke	RHreal	%	Weibull	a = 80; b = 5
	RHref	%	—	65
		—	—	2.5
	fe	—	—	5.0
Cs	—	kg/m^3	Normal	μ = 0.00082; σ = 0.0001
W (t)	t0	years	—	0.0767
	psR	—	—	0.1
	bw	—	Normal	μ = 0.446; σ = 0.163
	ToW	—	—	0.246
a	—	mm	Normal	μ = 30; σ = 10
Papadakis et al. model [24]
(NAs)	—	kg/m^3	—	2700
(RAs)	—	kg/m^3	—	2300
	—	kg/m^3	—	3100
	—	kg/m^3	—	1000
% coarse aggregates	—	—	—	50
	—	kg/m^3	—	Evaluated with (22)
c	—	kg/m^3	—	From 260 to 340
	—	kg/m^3	—	170
a	—	kg/m^3	—	− c −
	—	ppmv	—	500
RH	—	%	—	80