Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm

Table 6

Variables and constants in regression analysis.

	𝐼	𝐴	𝐵	𝐶	𝐷	𝐸
Equation (1)	1018.56	16.08	−1.42	2.75	0.60	−9.75
Equation (2)	15,427.82	49.562	−29.60	5.48	−4.42	9.79
	𝑎: −0.005825; 𝑏: 0.7542

w/c: w/c ratio (%); C: cement content (kg/m³); S/a: sand percentage (sand/total aggregate) (%); Agg: coarse aggregate content (kg/m³); R.H: relative humidity (%); 𝐼: Intersection (constant).