Carbonation Characteristics of Alkali-Activated Blast-Furnace Slag Mortar

Table 4

Compressive strength of the mortar mixes (unit: MPa).

Mix	Condition	Compressive strength (MPa)
	Age; carbonation period	14 days; 7 days	21 days; 14 days	28 days; 21 days
OPC	Noncarbonation	23.5	28.4	32.1
	Carbonation	29.4	38.3	45.1
G3	Noncarbonation	12.5	13.1	14.9
	Carbonation	7.5	7.2	7.6
G5	Noncarbonation	26.4	28.1	30.4
	Carbonation	22.0	19.5	16.7
G7	Noncarbonation	36.7	39.6	42.5
	Carbonation	33.7	32.0	28.9