Recycled Aggregate Concrete including Various Contents of Metakaolin: Mechanical Behavior

Table 4

Results of workability and compressive strength of all mixes.

Group	Mix designation	Slump (mm)	Compressive strength (MPa)
			7 days	28 days	90 days
Reference group or G0	N00	125	33.2	44.8	49.7
	R350	100	27.6	39.4	42.6
	R700	85	24.6	35.7	39.3
	R1000	80	21.4	31.4	34.2
G1	R354	90	27.5	41.0	45.5
	R358	85	29.1	42.2	47.6
	R3512	80	31.0	44.9	50.3
	R3516	80	30.4	45.3	52.6
	R3520	70	33.3	46.9	55.3
G2	R704	80	26.7	38.2	42.0
	R708	75	26.9	39.6	44.8
	R7012	70	28.6	42.1	48.4
	R7016	60	29.8	43.2	50.1
	R7020	60	30.3	43.9	50.9
G3	R1004	80	22.3	33.3	37.9
	R1008	75	23.9	35.2	40.4
	R10012	75	25.8	37.4	43.7
	R10016	65	26.5	38.9	45.9
	R10020	60	29.6	40.5	48.5