Common abnormal problems of FRP Bridge include the following 5 points: 1. Sticky surface; 2. Many bubbles; 3. Glue flow; 4. Stratification; 5. Poor drying and solidity. The following is a detailed answer from Jinan Bridge manufacturer.
1. The surface is sticky, the environmental humidity is high, and the moisture is too concentrated; Furthermore, it is caused by the polymerization inhibition of oxygen in the air. The solution is: add a part of stone wax to the epoxy resin, spray a layer of epoxy resin glue toluene solution on the surface of the FRP Bridge, or apply a layer of cold dry paint on the surface;
2. There are many bubbles. The reason is that too much resin is used. It is necessary to improve the mixing method to reduce the bubbles in the adhesive. The viscosity of the resin is very high, and the ambient temperature can be increased. The twistless glass cloth, which is very easy for the resin to soak, is used.
3. Glue flow, commonly known as epoxy resin tumor, epoxy resin viscosity is small, appropriate silica powder can be added, or the materials may be uneven, and sufficient mixing is required.
4. Delamination is caused by the glass cloth not dewaxing or returning to moisture, insufficient use of epoxy resin or the glass cloth not tightly clamped, and the thermosetting time is too early, too fast or too high.
5. Poor dry curing is caused by too low temperature, too high environmental humidity, insufficient or unsuccessful use of epoxy curing agent or curing accelerator.
In addition, before the installation of FRP Bridge equipment, the orientation from the beginning to the end shall be determined according to the construction drawing, and the alignment shall be calibrated along the drawing to find the horizontal, straight and curved connection. The lines shall be snapped or drawn on the wall, ceiling, ground, beam, plate, column, etc. along the bridge alignment with powder line bags or lines, and the orientation of supports, hangers and brackets shall be drawn with uniform spacing.
The cause analysis of five common abnormal problems of FRP Bridge has also been explained to you. I hope I can help you. For more precautions, please come to our website http://www.yeeones.com Consult and understand.