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

Table 1

Test schemes and groups.

Scheme number	Broken rock particle size	Group number (5 test blocks in each group)					Test purpose
		Water cement ratio
		0.7	0.9	1.1	1.3	2.5
I	—	C07	C09	C11	C13	—	To test the shear strength of grout concretion
II	F	—	—	—	—	OF	To test the shear strength of the original broken rock
	M	—	—	—	—	OM
	R	—	—	—	—	OR
III	F	F07	F09	F11	F13	—	To test the shear strength of fine particle broken rock grouting reinforced concretion
IV	M	M07	M09	M11	M13	—	To test the shear strength of medium particle broken rock grouting reinforced concretion
V	R	R07	R09	R11	R13	—	To test the shear strength of coarse particle broken rock grouting reinforced concretion