Strength Assessment of Broken Rock Postgrouting Reinforcement Based on Initial Broken Rock Quality and Grouting Quality

Table 4

Test results of growth rate of UCS on broken rock grouting concretion.

Broken rock type/water cement ratio of grout	UCS
	Broken rock grouting concretion; /MPa	Cement grout concretion; /MPa	Original Broken rock; /MPa
	F/0.7	8.351	11.477	0.870	0.076	8.599
F/0.9	6.471	7.265	0.870	0.120	6.437
F/1.1	5.644	5.311	0.870	0.164	5.487
F/1.3	5.320	3.585	0.870	0.243	5.114
M/0.7	10.014	11.477	2.059	0.179	3.864
M/0.9	7.940	7.265	2.059	0.283	2.856
M/1.1	6.752	5.311	2.059	0.388	2.279
M/1.3	6.420	3.585	2.059	0.574	2.118
R/0.7	12.059	11.477	3.864	0.337	2.120
R/0.9	9.694	7.265	3.864	0.532	1.509
R/1.1	8.378	5.311	3.864	0.728	1.168
R/1.3	7.981	3.585	3.864	1.078	1.065