In a project,technical measures were taken to ensure the construction quality of basement waterproof,such as self-waterproof structure,and fly-over structure of foundation slab,flexible waterproof with soft protection layer for the external wall,and expansive water-stop strip for the horizontal construction joints of the basement external wall instead of steel water-stop strip and etc.
According to the analysis of leakage fault for shield tunnel and the practical construction state,engineers use EPDM elastic water-stop strip to solve waterproof of duct lining successfully,based on the comparison of common waterproofing materials for duct lining and waterproofing design.
The second waterproofing layer was the waterproofing of construction joint and deformation joint. Construction joint selected BW-96I-type water-expansion waterproofing strip and WJ limit-surfaced adhesive as waterproofing materials. Deformation joint chose E3-type rubber waterproofing strap and ST water-expansion rubber waterproofing strip as waterproofing materials.
Joint waterproofing is vital for tunnel waterproofing . The construction joint selected waterexpansion waterproofing strip and WJ limitsurfaced adhesive as waterproofing materials. Deformation joint chose rubber waterproofing strap and waterexpansion rubber waterproofing strip as waterproofing materials.