Reliability-Based Analysis of Recycled Aggregate Concrete under Carbonation

Table 2

Coefficients of (22) and (23) for relative density and concrete compressive strength estimation at 28 days in RACs.

	α2	β2	R^2 value	α3	β3	R^2 value
R = 0%	2.7	0.5	0.97	130	−1.90	0.97
R = 20%	2.6	0.5	0.91	115	−1.80	0.98
R = 50%	2.6	0.52	0.94	120	−1.90	0.79
R = 100%	2.55	0.52	0.90	130	−2.10	0.83

R = replacement ratio.