PART 7. Before and After: Results and Benefits

7.1 Life Extension Effect

The most fundamental value of trenchless pipe rehabilitation is the reuse of existing pipes without demolition. By forming a lining inside the pipe, it restores the structural performance even of aged pipes.

In the case of the Golden Gate Bridge in San Francisco, USA, recoating for saltwater corrosion prevention extended the recoating cycle. However, specific extension figures are not detailed on the HIGHCOATIC website, so separate verification is required if precise figures are needed.

7.2 Cost and Time Savings

Compared to excavation-based replacement, trenchless methods can eliminate several process steps.

Excavation-based replacement requires sequential steps of excavation, backfilling, and road/pavement restoration, but trenchless methods eliminate the need for these processes entirely. This significantly reduces road closure periods and construction time, and eliminates backfilling and pavement restoration costs.

7.3 Environmental Benefits

Trenchless pipe rehabilitation offers environmental benefits in both the application process and the materials used.

• Minimization of Construction Waste: By reusing existing pipes without demolition, the generation of construction waste, such as demolished pipes and concrete/asphalt debris, is reduced.
• Reduced Carbon Emissions: The absence of excavation, backfilling, and pavement restoration processes helps reduce carbon emissions from the operation of related equipment.
• 0% Volatile Organic Compounds (VOCs): Polyurea is a material with 0% VOCs, minimizing its impact on workers and the surrounding environment during application.
• Drinking Water and Food Facility Certifications: All products hold certifications for use in drinking water and food facilities from relevant authorities in countries such as the USA, Singapore, Canada, and China, allowing for safe application in water supply pipes.