The NEW Set Form NF method is a construction technique that offers excellent safety during construction, as well as preventing volume shrinkage of the foam after filling, making it a "safe," "reliable," and "high-performance" method!
The "NEW Set Form NF Method" is a backfill injection method that fills the voids behind the lining concrete in repair work for existing tunnels using a rigid foam polyurethane called "Set Form."
It was newly registered with the Ministry of Land, Infrastructure, Transport and Tourism's New Technology (NETIS) in December 2024 (KT-240144-A).
**Features of the NEW Set Form NF Method:**
- Over 1,000 achievements with 40 times expanded polyurethane.
- A responsible construction system supported by more than 30 member companies.
- The average increase rate of final injection volume is 132%, making it economical.
- Uses HFO (Hydrofluoroolefin) as a foaming agent, an environmentally friendly non-fluorine product.
- Improved dimensional stability due to HFO remaining stable within the foam.
- Possesses isocyanurate bonds and uses HFO as a foaming agent, achieving high thermal decomposition temperature and low internal temperature to prevent smoke accidents.
- Compact injection equipment eliminates the need for wide access routes or land.
- Can be operated with batteries, making it suitable for narrow construction sites.
*For more details, please download the PDF or feel free to contact us.*