Hydropower Station Dam
2018 Sichuan humid basin hydropower station dam renovation adopts polyaspartic waterproof coating, solving long-term damp seepage and concrete aging for hydraulic structures.
Project Overview
Completed in 2018, this targeted rehabilitation project delivered professional waterproof upgrading for a large-scale hydropower dam in Sichuan, China. Located in a typical subtropical basin zone, the facility endures year-round high humidity, continuous rainy weather and frequent wet-dry climate alternation. These unique local conditions bring persistent seepage and concrete aging risks that cannot be solved by conventional hydraulic waterproof materials. To stabilize long-term dam structural safety, our construction team applied high-performance polyaspartic waterproof coating for full-surface anti-seepage renovation.
On-Site Climate & Structural Challenges
Most traditional waterproof solutions are designed for dry or cold regions, showing obvious limitations in Sichuan’s humid basin environment. The dam body is immersed in reservoir water all year round, accompanied by sediment adhesion and long-term damp air erosion. Ordinary coating layers gradually lose adhesion, resulting in micro cracks, blistering, peeling and hidden water seepage. Long-term cumulative defects weaken concrete structures, requiring frequent manual maintenance and affecting the continuous power generation efficiency of the hydropower station.
Custom Polyaspartic Coating Solution for Humid Hydraulic Structures
To solve the regional pain points of dam protection in high-humidity areas, polyaspartic waterproof coating was adopted as the core protective material. It forms a dense, integral seamless film that closely fits the complex concrete surface of the dam, covering micro pores and structural gaps thoroughly. The coating effectively isolates reservoir water, humid air and sediment pollutants, preventing concrete carbonization and internal structural penetration.
Key On-Site Adaptation Advantages
The material exhibits excellent environmental adaptability tailored for Sichuan’s hydropower working conditions. Its high elastic formula can follow tiny concrete deformation caused by seasonal temperature and humidity changes, effectively bridging micro cracks without secondary cracking. Even after years of long-term water immersion and rain erosion, the coating maintains stable surface integrity without aging, chalking or peeling. In addition, its fast-curing performance greatly shortens on-site construction cycles, minimizing shutdown impact on operational hydropower equipment.
Project Operation Results
Since the completion of construction in 2018, the polyaspartic waterproof layer has remained stable and reliable under long-term humid basin climate conditions. It completely eliminates dam seepage hazards, effectively protects hydraulic structural stability, and significantly reduces repeated maintenance costs. This application provides a highly practical waterproof renovation reference for various dams, reservoir slopes and water conservancy facilities in high-humidity inland basin regions.
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