Failure to respond
High-Temperature and UV Exposure: How to Protect Geomembrane from Premature Aging
Engineering answer
Black HDPE relies on carbon black to absorb ultraviolet rays and to delay aging with antioxidants, but persistent high temperatures will accelerate the consumption of antioxidants. Purchases should be nuclear to carbon black content with a decentralized, standard/high-pressure OIT and raw material system; design should reduce unnecessary exposure; avoid local heat sources and high-stress fractures, and establish regular inspections for long-term outdoor use.
Failure to respond
Common risks and addressing them
- The only way to judge UV is by black.The decline in the use of recycled materials or carbon black could still be premature.
- Forced repairs in high temperaturesThe state of the membrane's heating and swelling affects the stress after patch cooling.
Failure to respond
Procurement and Acceptance Checklists
| The checkpoint | Control requirements | Delivery of evidence |
|---|---|---|
| Stability of the system | Carbon black content, decentralized and OIT-compliant | Batch reports |
| Exposure to work | Highest membrane temperature, exposure time, chemical mean | Design conditions |
| Protective measures | Coverage, load, ventilation and patrol can be implemented | Transportation and maintenance |
Failure to respond
Steps to landing
- Difference between temporary and permanent exposureExplain the construction and operation periods of the area.
- Control of stressKeep heat in the high temperatures to avoid tightening.
- Establishment of a tourist checkpointThe main focus is on checking the seams, cracks, water lines and the solids.