Why does solid wood floor produce tile deformation?
Wood is an anisotropic material. The fibers of the wood are longitudinally arranged. Under the microscope, the wood is porous. There are many ducts arranged in the longitudinal direction. The longitudinal deformation of the wood is the smallest, the water conduction speed is the fastest; the width of the wood is greatly deformed. (radial chordwise direction), moisture conduction is very slow. The air in the south of China is humid, the relative humidity of the air is up to 85%, and the equilibrium moisture content of the floor is about 16%. Even in the northeast and north China, the rainy season from June to September, the equilibrium moisture content of the floor is 13-15. %, the new building has a moisture content of more than 18%. If the floor moisture content is lower than the equilibrium moisture content of the local or use environment, the floor should absorb moisture. Because of the more paint on the floor surface, it is difficult for water to enter from the floor surface. Although the board was painted, it did not form a continuous film due to the small amount of paint and could not prevent moisture from entering. Therefore, the back of the floor absorbs moisture easily, causing the backing of the floor to expand and become longer, resulting in tile-like deformation, and the plate surface will be cracked in severe cases. From this point of view, the tile-like deformation of the solid wood floor is mainly caused by the moisture of the floor. The Jilin Academy of Forestry has conducted a special experimental study on the deformation of the floor tile. We put a common solid wood floor and another piece of the same floor backing plate with a layer of tape for moisture-proof treatment, and put it into the environmental experiment box. Gradually increase the environmental humidity and observe the deformation of the floor. The ordinary solid wood floor increases with the increase of humidity, and the deformation of the tile gradually increases. The floor with a layer of adhesive tape on the back panel did not produce a tile-like deformation, but the width increased. Then gradually reduce the environmental humidity, the ordinary solid wood floor decreases with the decrease of the humidity, and the deformation of the tile gradually decreases. The width of the floor with a layer of adhesive tape on the backboard is also reduced. The experimental results show that the main reason for the deformation of the solid wood floor is that the floor is damp and the moisture is not properly treated during the paving, and it has nothing to do with the quality of the floor.
Solid wood floor tile deformation can be solved by the correct paving method. There are three parts of moisture that can cause the solid wood floor to deform: 1. moisture in the air; 2. moisture in the keel; 3. moisture in the ground. Whether the paving process of the floor can effectively hinder the three parts of moisture from contacting the back of the floor is the key.
The frequently occurring error pavements are as follows:
1. The pavement floor is free of moisture-proof membranes (the three parts are not protected);
2. The moisture-proof membrane joint is not sticky or sticky, and it is breathable and does not reach the purpose of moisture-proof;
3. Spreading the moisture barrier under the keel only prevents the effect of surface moisture;
4. The moisture-proof film is placed on the keel, the moisture-proof film is wavy on the keel, and there is a gap between the floor back plate and the moisture-proof film, and the three parts of moisture can still break in, causing the floor to deform;
5. The reserved gap between the floor strips is unscientific. Many paving instructions only write a reserved gap. In fact, the size of the reserved gap of the floor should be based on the actual moisture content of the floor. The shrinkage factor of the tree species. Width, regional equilibrium moisture content and other factors reasonably reserved gaps.
If you want to block the moisture from contacting the back of the floor, the moisture-proof film must be in close contact with the floor back. A substrate should be placed on the keel to hold the moisture-proof film to ensure that the moisture-proof film is in close contact with the floor back.
The recommended paving method is as follows:
1. The floor should be dry and flat and clean, and the flatness should be less than 2mm/1000mm.
2. A layer of moisture-proof film is placed on the floor, and the joint of the moisture-proof film is adhered with 65mm wide plastic tape to ensure airtightness (the north can be used).
3. The spacing between the keels should be less than or equal to 350mm. The keel is required to be flat and the keel is firm and not loose. The keel is made of anti-corrosion (width > 35mm) with conifer or high quality plywood.
4. Lay a floor on the keel. The floor should be made of environmentally friendly blockboard or environmentally friendly multi-layer plywood.
5. The bottom plate should be sawed to be no more than 600x600mm, and a gap of 5-10mm should be left between the bottom plate and the bottom plate. The bottom plate and the keel are firmly connected by a screw.
6. Lay a moisture-proof film on the bottom plate, and the joint of the moisture-proof film is adhered with 65mm wide plastic tape to ensure airtightness.
7. The floor is covered above the floor, and the gap between the floor strips should be scientifically and reasonably reserved according to the expansion coefficient of the floor tree species, the width of the floor, the actual moisture content of the floor and the equilibrium moisture content of each area.
8. The edge of the width of the floor should be left with an expansion gap of 10-15mm.
9. The floor and the bottom plate are connected by a screw, and the nail gun can also be used for the connection.
10. When the length exceeds 8 meters, the door should be disconnected.
Insulation/freezer bags are also called passive refrigerator, is a package with high thermal insulation, thermostatic effect (with the role of warm winter and cool summer), more protection of cold, heat preservation, fresh, made of high-quality materials, convenient to carry, suitable for driving trips, holiday outings, family picnics, the inner layer of the product is pearl cotton clad aluminum foil reflective thermal insulation layer, provide good thermal insulation effect, from now on you can carry on the car, outdoor iced drinks, cold drinks, do not have to endure hot drinks!The appearance of the ice bag is fashionable and beautiful, the style is novel, the bag is easy to clean, can be folded, easy to store. This product also has the function of heat preservation, and is also suitable for winter heat preservation. It is a necessary product for life, travel and leisure.
Thermal Bag,Aluminum Foil Insulation Bags,Insulation Zipper Bags,Drawstring Insulation Bags
Wenzhou Shandao Electronic Commerce Co., Ltd. , https://www.reusablebaglife.com