Performance Degradation of Subsea Shield Tunnel Segment Accounting for Concrete Strength Loss and Steel Bar Corrosion

Table 2

Comparison of triaxial compressive strength and elastic modulus of the three groups of samples.

σ3 (MPa)	σ1,A (MPa)	σ1,B (MPa)	σ1,C (MPa)	σ1,B/σ1,A	σ1,C/σ1,A	σ1,B/σ1,C	EA (GPa)	EB (GPa)	EC (GPa)
2	97.53	59.018	48.139	0.605	0.494	0.816	34.980	20.783	19.678
4	127.101	76.211	68.091	0.600	0.536	0.893	41.487	22.222	21.721
6	129.657	85.695	79.746	0.661	0.615	0.931	37.474	23.607	20.763
8	144.765	97.361	91.457	0.673	0.632	0.939	40.990	23.434	20.758
10	156.588	103.484	97.921	0.661	0.625	0.946	39.709	21.614	20.624
Average value	—	—	—	0.640	0.580	0.905	38.928	22.332	20.709