Systematic Performance Evaluation of Shield TBM Cutters for Excavating Multiple Soft Rock

Table 1

Mechanical properties and component ratios of the specimens.

No.	Elastic module, MPa	σc, MPa	σt, MPa	CAI	Component ratios^a	Cure time (weeks)	Moisture content (%)
S1	1880	31.82	1.39	2.4	15%–0–85%	3	3.5
S2	898.6	19.14	2.55	4.0	35%–0–65%	2	8
S3	683.58	10.59	1.29	3.5	20%–25%–55%	1	17

^aIn sand-cobblestone-cement order.