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

Table 6

Compressive strength after alkali resistance test.

Density (g cm^3)	Compressive strength (MPa)
	a-0%	a-0.2%	a-0.4%
1.55	The first loop break	Breaking the fifth cycle	0.46
1.65	The second loop break	Breaking the fifth cycle	1.02
1.75	The third loop break	0.31	1.06