Fiberglass geogrids and nonwoven geotextiles are two geosynthetics widely used in modern civil engineering and water conservancy projects. The combined use of these two materials in road construction, slope protection projects, water conservancy projects and other civil engineering fields can significantly improve project quality, extend the life of the structure, and reduce overall costs. This article will introduce in detail the characteristics, applicable scenarios and correct matching methods of fiberglass geogrid and nonwoven geotextile.
Use scenarios of glass Fiberglas geogrid and nonwoven geotextiles
- Road construction; In road construction, the combination of glass fiber geogrid and non-woven geotextile can enhance the stability of the roadbed, prevent road cracking and extend the life of the road.
Glass fiber geogrid: used to reinforce the roadbed and asphalt layer to reduce deformation caused by load.
Non-woven geotextile: used between the roadbed and the base layer to play the role of isolation, filtration and drainage.
- Slope protection; Slope engineering needs to effectively control soil loss and maintain slope stability.
Glass Fiberglass geogrids: used to enhance the shear strength of the surface soil of the slope to prevent slippage.
Non-woven geotextile: used under the vegetation layer of the slope to prevent soil erosion and promote the growth of plant roots.
- Water conservancy projects; In reservoirs, dams and river management, the combination of the two can improve the anti-scouring ability and extend the service life of the structure.
Glass Fiberglass geogrids: used to reinforce the dam structure and prevent foundation deformation.
Non-woven geotextile: used for filtration and drainage, reducing the impact of water pressure on the structure.
- Infrastructure construction; airport runways, parking lots and other scenes with high requirements for foundation stability, the combination of these two materials is also often used.
Fiberglass geogrids: disperses heavy loads and prevents foundation settlement.
Non-woven geotextile: provides isolation and drainage functions to protect the foundation.
- Correct use of fiberglass geogrid and non-woven geotextile
- Construction preparation
Material selection: Select appropriate specifications of Fiberglas geogrid and nonwoven geotextiles according to project requirements.
Foundation treatment: Clean the construction site to ensure that the foundation is flat and free of debris.
Measurement and layout: Determine the laying position and size according to the design drawings.
- Laying of non-woven geotextile
Laying method:
Unfold the non-woven geotextile according to the design size to avoid wrinkles and overlaps.
Leave a certain overlap width at the edge (usually 10-20cm).
Fixing method: Use U-shaped nails or sandbags to fix to prevent movement during construction.
Note: Avoid sharp objects from scratching the geotextile to maintain its integrity.
- Laying of fiberglass geogrid
Laying method:
Unfold the Fiberglass geogrids to ensure uniform tension.
The grids should be overlapped according to the design requirements (usually 10-15cm).
Fixing method: Use steel nails or other fixing devices to ensure that the grid does not shift.
Note: Avoid vehicles from directly rolling over the unfilled grid during construction.
- Filling and compaction
Filling selection:
In road construction, it is recommended to use high-quality materials such as crushed stone and gravel.
In slopes or water conservancy projects, vegetation soil or concrete can be used.
Filling construction:
Layered filling, the thickness of each layer should meet the design requirements (usually 15-30cm).
After each layer of filling is completed, it is compacted, and the compaction degree should reach more than 90%.
Note:
Avoid direct contact between filler and geogrid or geotextile.
The compaction equipment should be light to avoid damage to the grid and geotextile.
The reasonable combination of Fiberglas geogrid and nonwoven geotextiles is an important means to improve the quality and durability of civil engineering. Through scientific material selection, standardized construction process and strict quality control, the performance advantages of both can be maximized to ensure the long-term stability and economic benefits of the project. Whether it is road construction, slope protection or water conservancy projects, this combination provides efficient and environmentally friendly solutions for modern projects.
