无码无套少妇毛多18pxxxx,日韩欧美一区二区福利视频,17c视频在线观看,中文字幕久久久久久妻,日本黄色精品专区网站

The waterproof design of extruded polystyrene board for building exterior walls includes the design of exterior wall waterproof structure, selection of waterproof layer materials, and waterproof design of nodes such as doors and windows. Today, let's take a look at the specific requirements for exterior wall waterproof structure design.

Finished extruded polystyrene boards are commonly used for building facades, and their structural risks mainly manifest in detachment caused by wind pressure and detachment of adhesive layer materials due to rainwater entering the wall. The material surface of ultra-thin stone is natural shale and sandstone, and the back plate is made of polyurethane and fiberglass. It can be used according to the purpose of the coil material and installed on cylinders and curved walls.

So before construction, the extruded board needs to completely eliminate materials that affect the bonding strength, such as uneven surface of the base wall, release agents, hollowing, and weathered materials. In addition, it should be noted that the steel faced magnesium extruded board has good tensile and compressive properties, high strength, and complex product processes. Folding will increase the compressive and tensile strength.

The extruded board has the function of preventing moisture infiltration and has high strength and hardness. The fluffy sheet shaped extruded board is increased in hardness and density of inorganic cotton through the pendulum method, and after a series of processing, the extruded board is finally formed. These sandwich panel products are easy to install, lightweight, and efficient. The filling system also uses a closed bubble molecular structure, which can prevent the condensation of water vapor.

The surface of the extruded board must be coated with a moisture-proof layer to prevent cold. Under extremely low temperature conditions, resin free extruded boards should be used for insulation, and the moisture-proof layer should also be fire-resistant. When the temperature exceeds 200 ℃, the insulation material must have appropriate external protection to prevent possible expansion from changing.