Compression Characteristics and Constitutive Model of Low-Exotherm Modified Polyurethane Grouting Materials

Table 5

Yield strength calculation results.

Density (g/cm^3)	Relative density	Yield strengths (MPa)
		Theoretical value	Test value	Error (%)
0.09	0.0917	0.51	0.52	1.92
0.24	0.2000	3.51	3.49	0.57
0.35	0.2833	7.32	7.34	0.27