Properties and Internal Curing of Concrete Containing Recycled Autoclaved Aerated Lightweight Concrete as Aggregate

Table 4

Differential percentage of minute compressive strength in layer 1 (L1) between 7 and 28 days of age.

Mixtures	Air curing (AC)						Water curing (WC)
	L1 Ext. (MPa)			L1 Int. (MPa)			L1 Ext. (MPa)			L1 Int. (MPa)
	7 d	28 d	%Δ	7 d	28 d	%Δ	7 d	28 d	%Δ	7 d	28 d	%Δ
NC	0.64	0.84	31.75	0.95	1.30	36.78	0.77	1.21	57.22	1.03	1.54	49.48
LWA20	0.83	1.12	34.00	1.12	1.69	51.10	1.11	1.48	33.33	1.41	2.01	42.08
LWA40	0.93	1.00	7.24	1.30	1.55	19.55	1.26	1.32	4.73	1.57	1.73	10.59
LWA60	0.93	1.13	21.37	1.23	1.62	31.42	1.15	1.43	25.06	1.39	1.80	29.04