A waterproof structure of a post-cast cover plate of a floor
By using waterproof tape and a flexible sealing structure at the stepped joints of the post-cast strips in the floor slab, the waterproofing problem caused by the gaps in the stepped joints was solved, achieving a better waterproofing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RANKEN RAILWAY CONSTR GROUP
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-19
AI Technical Summary
The existing stepped joint structure at the junction of the post-cast strip of the floor slab and the concrete on both sides creates gaps at the corners of the stepped grooves, affecting the waterproofing effect.
Water-stop tape is connected at the inner corner of the stepped structure of the already poured floor slab, and a flexible sealing structure, including water-swellable rubber strips and polyurethane caulking compound, is filled at the top of the multi-step stepped structure to fill the gaps and prevent moisture penetration.
It improves the waterproofing effect of the post-pouring strip, prevents water from penetrating along the thickness of the floor slab, and enhances the overall waterproofing performance of the floor slab.
Smart Images

Figure CN224379150U_ABST