Optimizing the Mixing Proportion with Neural Networks Based on Genetic Algorithms for Recycled Aggregate Concrete

Table 3

Summary of results (approximate range of each parameter).

Required strength (MPa)	S/a (%)	Air (%)	Slump (cm)	Replacement ratio (%)		Admixtures (g)
				RCA (1st Class)	RFA (1st Class)	AE-water reducing agent	AE agent
33~34	42	4.5±0.5	20±1.5	0~30%	0~50%	196	5~10
	47			0~50%	0~50%	196	5~10
	52			0~50%	0~30%	196	—