1. Due to the low density and light material, it is necessary to consider the anti-floating measures such as setting up town piers or rainwater runoff guidance in the area where the groundwater level is high.
2. In the construction of the installed FRP grating and repairing the cracks in the pipeline, it is required to be completely dry in the factory and the resin and fiber cloth used in the construction need to be solidified in 7-8 hours, and the site construction and It is generally difficult to meet this requirement for repairs.
3. The existing underground pipeline detection equipment is mainly based on detecting metal pipelines, while the non-metal pipeline detection instruments are expensive. Therefore, the FRP gratings are currently unable to be detected after being buried, and other subsequent construction units are extremely easy to dig and damage the pipeline during construction. .
4, FRP grating anti-UV ability is poor. At present, the surface-mounted FRP grating delays the aging time by making a 0.5 mm thick resin-rich layer and an ultraviolet absorber (in-plant processing) on ​​the surface thereof. As the run time progresses, the resin-rich layer and the UV absorber are destroyed, which affects its service life.
PPGI And PPGL With Different Designs
PPGL Sheet,PPGI Sheet,PPGI Profile Sheet,Galvanized Roofing Sheet
SHAOXING YOTO IMPORT&EXPORT CO., LTD , https://www.sxyoto.com