From: Influence of steel plates on the compressive strength and pore structure of concrete
No. | Strength grades | The thickness of steel plates (mm) | Constraint ratio (%) |
---|---|---|---|
C20-R0 | C20 | 0 | 0.0 |
C20-R1 | 4 | 2.0 | |
C20-R2 | 6 | 3.0 | |
C20-R3 | 10 | 5.0 | |
C20-R4 | 12 | 6.0 | |
C20-R5 | 16 | 8.0 | |
C20-R6 | 20 | 10.0 | |
C20-R7 | 25 | 12.5 | |
C20-R8 | 30 | 15.0 | |
C50-R0 | C50 | 0 | 0.0 |
C50-R1 | 4 | 2.0 | |
C50-R2 | 6 | 3.0 | |
C50-R3 | 10 | 5.0 | |
C50-R4 | 12 | 6.0 | |
C50-R5 | 16 | 8.0 | |
C50-R6 | 20 | 10.0 | |
C50-R7 | 25 | 12.5 | |
C50-R8 | 30 | 15.0 |