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TableĀ 3 Experimental data of width of the joint.

From: Experimental Study on Waterproofing Properties of Putty-Based Composite Rubber Strip for Underground Post-Tensioned Precast Concrete Structures

Post-tensioning step Width of the joints (mm) Mean value (mm)
Joint1 Joint 2 Joint 3 Joint 4
Initial value 20.26 19.06 23.58 24.51 21.85
3 14.63 14.11 11.74 13.98 13.62
6 12.73 12.36 9.14 9.68 10.98
9 10.10 8.28 7.13 6.76 8.06