How to Further Improve The Performance of Composite Geomembrane
In the process of repairing old water conservancy buildings, composite geomembrane is usually used as the impervious material of the building.
The splicing quality is the key to determine the success or failure of the anti-seepage performance of the wholesale textured geomembrane. The splicing method is usually constructed by hot-melt welding. The film and the film are generally welded by a dual-drive self-propelled geomembrane welding machine. The overlap width of the weld is 10cm, and there is a 10mm wide cavity between the two welds. Portable sealing machine, T-shaped stitching of polyester thread. Note that before formal welding, test welding should be performed according to the climate characteristics of the construction area to determine the walking speed and welding temperature. During the construction process, the walking speed of the welding machine should be controlled at 0.8 ～ 1.2m / s, and the welding temperature should be 240 ～ 260 ℃. Before welding, it is best to place a long wooden board under the seam of the geomembrane so that the welding machine can walk on a flat base surface to ensure the welding quality.
In addition to the quality of the materials, to further improve the performance of the composite geomembrane, efforts must be made during construction.
Generally, in order to facilitate the construction and ensure the quality of splicing, the composite geomembrane generally uses a wide width to reduce the amount of splicing on-site. Before construction, the appropriate length should be cut in the factory according to the width of the material and the length of the site, and then spliced into blocks that meet the required size and rolled into rolls. A non-composite layer of about 10 cm is reserved on both sides (that is, the cloth and the film are separated, which is referred to as the remaining edge) for the lateral connection of the geomembrane. The damaged area of the geomembrane when the weld is sheared mainly occurs in the weak part of the joint between the weld area and the aquaculture geomembrane factory price, so we should pay sufficient attention to the construction of the weld.