Sponge City Hydrophilic Rock Wool Element Stormwater Retention
Designed specifically for sponge city stormwater retention systems, this high-porosity hydrophilic rock wool element maximizes rainwater retention and slow release within limited spaces. It addresses the core challenges of urban flooding, wasted rainwater resources, and the large footprint of traditional facilities.
Installed in bioretention strips or sunken green spaces, it rapidly absorbs runoff during heavy rainfall and slowly replenishes groundwater or returns moisture to the atmosphere, enabling cities to "breathe" like a sponge.
Applications include water buffering, infiltration and drainage of urban rain gardens, bioretention strips, and sunken green spaces.
| Parameter | Typical Value |
|---|---|
| Density | 75–100 kg/m³ |
| Mass Water Absorption | ≥ 900% |
| Porosity | ≥ 92% |
| Compression Strength | ≥ 60kPa |
- High water storage capacity: Water absorption rate exceeding 900%, far surpassing traditional soil and crushed stone, significantly enhancing sponge facility performance, reducing land occupation, and lowering land costs.
- Compression resistance: Maintains structural stability under long-term overburden and loads without collapse after years of use, reducing maintenance and renovation costs.
- Root penetrable: Loose fiber structure resists compaction over long-term use, allowing roots to grow freely, ensuring healthy vegetation, improved aesthetics, and enhanced ecological function.
- Strong decay resistance: Inorganic material that does not rot or support mold growth. Performs reliably in humid environments without odor or degradation, ensuring sanitation and safety while reducing maintenance frequency and labor costs.
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