The Variability and Evaluation Method of Recycled Concrete Aggregate Properties

Table 1

Properties of RA and NA.

Type of aggregate	Density (g/cm^3)	Water absorption (%)	Crushing value (%)	Abrasion value (%)	Adhesion grade
RA
RA1 (4.75–9.50 mm)	2.730	2.171	13.32	13.60	2
RA2 (4.75–13.2 mm)	2.742	2.233	13.40	13.60	3
RA3 (9.50–19.0 mm)	2.780	1.695	13.58	15.00	4
NA
NA1 (4.75–9.50 mm)	2.751	0.802	18.82	23.55	5
NA2 (4.75–13.2 mm)	2.793	0.798	19.01	23.55	5
NA3 (9.50–19.0 mm)	2.842	0.755	20.68	22.65	5
Commonly acceptable	≥2.600	≤2.000	≤28.00	≤30.00	≥4