Composite geomembrane is a kind of geotechnical material composed of synthetic polymer materials such as polyethylene or polyvinyl chloride and non-woven fabrics. It has the characteristics of light weight, high tensile strength, strong corrosion resistance and low permeability, and is widely used in water conservancy, highway, construction and other engineering fields for seepage, isolation and reinforcement.
1. Characteristics of 300g composite geomembrane.
The 300g composite geomembrane is a relatively thick geomembrane with a weight of 300 grams per square meter. Compared with other types of geomembranes, 300g composite geomembranes have the following characteristics:
1.Large thickness: The thickness of 300g composite geomembrane is 03 mm, thicker than the general geomembrane, can better play the role of seepage, isolation, reinforcement and so on.
2.High strength: Due to its thicker material, the tensile strength and compressive capacity of the 300g composite geomembrane are stronger, and it can withstand greater pressure and tensile force.
3.Good durability: The material of 300g composite geomembrane has good corrosion resistance and oxidation resistance, and can maintain its performance and use effect for a long time.
4.Convenient construction: The material of 300g composite geomembrane is lightweight, easy to construct and transport. At the same time, its strong tensile resistance also makes it easier to lay and fix.
Second, the application field of 300g composite geomembrane.
Due to the above characteristics of 300g composite geomembrane, it is widely used in the following fields:
1.Water conservancy engineering: In water conservancy engineering, 300g composite geomembrane is widely used in anti-seepage and isolation of reservoirs, canals, dams and other projects. It can effectively prevent water infiltration and erosion, and improve the safety and stability of the project.
2.Highway construction: In highway construction, 300g composite geomembrane is often used as a material for pavement seepage prevention and subgrade reinforcement. It can prevent the erosion of the road surface by moisture and prolong the service life of the road surface. At the same time, the 300g composite geomembrane can also be used for drainage design on both sides of the highway to improve the safety performance of the road.
3.Construction engineering: In construction engineering, 300g composite geomembrane is widely used in anti-seepage and isolation in basements, roofs, toilets and other places. Its excellent anti-seepage performance can effectively avoid the erosion and damage of water to the building structure.
4.Environmental engineering: In environmental engineering, 300g composite geomembrane can be used for seepage prevention and isolation of landfills, sewage treatment plants and other projects. Its corrosion resistance and oxidation resistance make it able to maintain good use results in various harsh environments.
3. Construction method of 300g composite geomembrane.
The construction method of 300g composite geomembrane mainly includes the following steps:
1.Base surface treatment: Before laying the 300g composite geomembrane, the base surface needs to be cleaned and leveled. Remove debris, dust and stagnant water on the base surface to ensure that the base surface is clean and flat. For some unstable substrates, reinforcement and stabilization are required.
2.Laying and fixing: According to the needs of the project, the 300g composite geomembrane is laid on the base surface, and it is fixed by hot melt and other methods. In the laying process, it is necessary to ensure the smoothness and wrinkle-free of the geomembrane, and at the same time pay attention to prevent sharp objects from puncturing the geomembrane.
3.Connection and welding: According to the needs of the project, the 300g composite geomembrane is connected and welded. The two geomembranes are connected together by hot melt and other methods to ensure the tightness and firmness of the joint. At the same time, it is necessary to ensure that the welding quality meets the relevant standards and engineering requirements.
4.Testing and acceptance: After the construction is completed, the 300g composite geomembrane needs to be tested and accepted. Check the laying quality, welding quality and anti-seepage effect of the geomembrane to ensure that it meets the relevant standards and design requirements. If defects or problems are found, they should be dealt with and repaired in a timely manner.