Geomaterials are a special class of materials used in the field of civil engineering to improve soil properties, increase the stability and bearing capacity of the soil body, as well as to provide seepage control, erosion control, protection and other functions. Common geomaterials include geosynthetics, geomembranes, geogrids, geotextiles and geotubes.

Here mainly introduces a few of the most commonly used geomaterials:

1. Geotextile: Geotextile is mainly made of polyester fiber or polypropylene fiber, which has good impermeability, protection and enhancement ability. Geotextile can be used in soil berms, river embankments, suspension beam slopes and other projects, play a role in increasing the stability of the soil body, preventing sand and soil loss and slowing down soil erosion.

2. Geomembrane: geomembrane is a polymer material with good waterproof, seepage control and aging resistance. Commonly used geomembrane materials include high-density polyethylene (HDPE), polyvinyl chloride (PVC) and acrylate copolymer (EVA). Geomembranes can be used to prevent water infiltration, chemical erosion and loss of soil particles from the soil and protect the stability of the soil.

3. Geogrid: Geogrid is a grid-like structure made of synthetic fibers or metal materials used to enhance the tensile and shear strength of the soil. Geogrid can be used in soil reinforcement, retaining wall, slope protection and other projects to effectively improve the stability and bearing capacity of the soil body.

Geosynthetics: Geosynthetics is a new type of geosynthetics material combined with synthetic fiber material and geomembrane. It improves the stability and durability of the soil body by increasing its tensile strength, shear strength and seepage resistance. Common geosynthetics include ground cells, geogrids, geotextiles and so on.

The application of geomaterials can improve soil conditions, increase the stability and durability of the project, and effectively prevent infiltration, erosion and destruction of the soil body. It has a wide range of application prospects in civil engineering, water conservancy engineering, transportation engineering and other fields.