Heavy Metal Leaching, CO2 Uptake and Mechanical Characteristics of Carbonated Porous Concrete with Alkali-Activated Slag and Bottom Ash

International Journal of Concrete Structures and Materials

Table 9 Measured total void ratios and targeted void ratios of porous concretes.

	Exposure condition (CO₂, %)	NS1	NS2	NS3	SS1	SS2	SS3	PC2
V _target (%)	–	36	31	26	36	31	26	31
V _total (%)	–	40	39	35	46	38	32	37
	5	37	39	29	45	41	33	37
	10	34	33	25	39	36	25	32