The glass fiber grid is a semi-rigid product made of alkali-free glass fiber mesh and coated with a base material. It is a new type of excellent geotechnical substrate that enhances the performance of road pavement. The main component of glass fiber is silicate. , Is a material with extremely stable physical and chemical properties. It has high heat resistance and excellent cold resistance (general working temperature is -100 ~ 280 ℃), high strength, high modulus, good chemical stability, and corrosion resistance. , Low expansion coefficient, good dimensional stability, etc. After surface modification and coating treatment, the surface properties of the glass fiber are changed, its composite performance with asphalt is improved, and the wear resistance of the substrate is greatly improved. And shear resistance.
1) High tensile strength and low elongation--Glass fiber grid uses glass fiber as the raw material, and the strength of glass fiber is higher than other fibers and metals. At the same time, its modulus is very high, and it has a very high Resistance to deformation, elongation at break is less than 3%.
2) No long-term creep-As a reinforcing material, glass fiber grids have the ability to resist deformation under long-term loads, that is, creep resistance is extremely important, and glass fibers will not creep, which guarantees that the product can be long-term Keep performance.
3) Thermal stability--The melting temperature of glass fiber is above 1000 ℃, which ensures the thermal stability of the glass fiber grid in the paving operation.
4) Compatibility with Asphalt Mixing-The material coated by the glass fiber grid in the post-processing process is designed for the asphalt mixture, each fiber is fully coated, and has high compatibility with the asphalt This ensures that the glass fiber grid is not isolated from the asphalt mixture in the asphalt layer, but is firmly bonded together.
5) Physical and chemical stability-After special post-treatment agent coating treatment, the glass fiber grid can resist all kinds of physical abrasion, chemical erosion, biological erosion and climate change to ensure its performance is not affected.
6) Aggregate lock-in and restriction-Because the fiberglass grid is a mesh structure, the aggregate in asphalt concrete can pass through it, thus forming a mechanical lock. This restriction hinders the movement of the aggregate and makes the asphalt The mixture can achieve better compaction under load, higher load capacity, better load transfer performance and less deformation.