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

Table 1

Physical properties of RAs (1st class) and NAs.

Source of aggregate	Fineness modulus	Specific gravity	Water absorption (%)
NCA	6.52	2.64	1.24
NFA	2.52	2.55	1.53
RCA	6.65	2.53	2.86
RFA	3.89	2.43	4.95