Properties and Applications of a New Chemical Grouting Material

Table 12

Compressive strength of trial lot before and after grouting.

Order number	Sections	Invert (MPa)	Packed layer (MPa)		Track bed (MPa)
			Before grouting	After grouting	Before grouting	After grouting
1	K251 + 025	25.8	18.8	26.0	41.7	43.0
2	K251 + 060	24.8	18.7	25.8	43.7	44.5
3	K251 + 190	24.6	19.0	26.5	44.5	44.8
4	K251 + 217	—	8.8	26.2	—	42.3
5	K251 + 227	25.3	13.9	25.4	18.9	42.8
6	K251 + 260	26.2	18.8	25.9	43.3	43.9
Design strength		25	25		40