Hydration of Reactive MgO as Partial Cement Replacement and Its Influence on the Macroperformance of Cementitious Mortars

Table 4

Carbonation depth and sorptivity of specimens with increasing MgO content.

Mix	Carbonation depth (mm)				Sorptivity (×10^−3 g/mm^2)
	28 days		91 days		3 hours		6 hours		24 hours		72 hours
	Avg.	Std.	Avg.	Std.	Avg.	Std.	Avg.	Std.	Avg.	Std.	Avg.	Std.
CM	1.32	1.44	1.76	1.47	4.21	0.09	5.49	0.17	9.69	0.61	12.12	0.50
MA10	1.22	1.31	3.00	1.53	3.52	0.18	4.70	0.18	9.19	0.29	13.89	0.35
MA15	1.39	1.21	4.38	0.88	3.86	0.29	5.19	0.34	10.21	0.09	15.18	0.16
MA20	2.39	1.93	5.83	1.20	4.35	0.08	5.68	0.12	9.93	0.25	14.31	0.52
MG10	1.21	1.14	2.04	1.07	3.33	0.14	4.46	0.17	8.36	0.12	12.42	0.20
MG15	1.56	1.52	4.13	1.38	3.66	0.05	4.90	0.05	8.55	0.06	12.65	0.22
MG20	2.74	1.82	—	—	4.74	0.09	6.36	0.13	11.27	0.26	16.77	0.36

Note: CM: control mortar; MA: mortars with MgO A; MG: mortars with MgO G.