Grey Prediction Model for Drying Shrinkage of Cement Concrete Made from Recycled Coarse Aggregate Containing Superabsorbent Polymers

Table 2

Physical properties of recycled aggregate.

Grain size (mm)	Apparent relative density (kg/m^3)	Water absorption (%)	Flakiness and elongation (%)	Crushing value (%)	Dust content (%)	Impurity content (%)
4.75–9.5	2660	5.80	4.5	—	0.3	0.2
9.5–19	2636	4.41	4.3	24.5	0.2	0.4
19–31.5	2625	3.20	3.2	—	0.2	0.3