[Retracted] Composite Nano-Calcium-Based Material for Reinforcement and Protection of Earthen Ruins in Humid Environment

Table 2

Compressive strength at different ages.

Density (g·cm^3)	a-solid content (%)	Compressive strength (MPa)
		3 d	7 d	14 d	28 d	90 d
1.55	0	0.26	0.37	0.46	0.57	0.64
	0.2	0.33	0.46	0.62	0.69	0.71
	0.4	0.43	0.52	0.69	0.70	0.80
1.65	0	0.53	0.53	0.67	0.70	0.72
	0.2	0.79	0.79	1.09	1.11	1.16
	0.4	0.92	0.98	1.13	1.26	1.30
1.75	0	0.93	0.93	1.35	1.84	1.88
	0.2	1.03	1.13	1.71	1.88	2.00
	0.4	1.27	1.27	2.05	2.20	2.22