Durability Studies on the Recycled Aggregate Concrete in China over the Past Decade: A Review

Table 2

Physical properties of RA obtained from various sources.

Sources of RA	References	Water absorption (%)	Crushing index (%)	Apparent density (kg/m^3)
Waste concrete	Original concrete strength: C20 [41]	4.8	27.26	—
	Original concrete strength: C30 [41]	4.7	23.77	—
	Original concrete strength: C40 [41]	4.35	22.99	—
	Original concrete strength: C50 [41]	3.25	19.78	—
	[42]	4.75	14.30	—
	[43]	5.63	15.00	2600
	[44]	4.55	32.00	2630
	[45]	5.70	24.80	2690
	[46]	3.26	13.20	2587
Waste brick	[47]	14.13	38.00	2245
	[48]	21.80	29.93	1652
	[49]	13.81	34.47	2461
	[50]	16.30	30.00	1610
Waste ceramics	[51]	1.50	6.70	2398
	[52]	3.84	6.97	2380
	[53]	3.31	6.20	2375
	[54]	2.93	7.30	2380
	[55]	3.31	7.90	2375