How does building formwork deal with moisture problems?

There are macrocapillary and microcapillary systems in the wood tissue of the building formwork. The water in the macrocapillary system is called free water, and the water in the microcapillary system is called sorbed water. In addition, a small amount is combined with wood molecules in a combined state of compound water.

 

The resistance of water movement of high-rise special building formwork, in the drying of veneer, the direction of water movement is mainly transverse conduction perpendicular to the direction of fiber arrangement, so the largest resistance is the resistance of pits, followed by the resistance of cell cavity and cell wall. The greater resistance that affects the evaporation of water, and the critical layer where the surface of the veneer is in contact with the air. When the thin layer in contact with the surface of the high-speed plate, the speed is close to zero, and it is a stagnant air film that separates the air from the surface. This film is called the critical layer. Water evaporation can only enter the air flow through the critical layer through slow diffusion. The heat in the air flow can only slowly pass through the critical layer and conduct to the interior of the veneer. Therefore, the critical layer affects the efficiency of heat exchange and reduces the The speed at which the moisture in the veneer escapes.

 

ZMADTO Plywood Co.Ltd is focus on construction plywood & wood formwork product. Our factory was established in 1993 and covers an area of 240,000 square meters with an average daily output of more 30,000 pcs plywood. Besides, the factory has more than 200 advanced equipment. After years of continuous development, it has become a leading company in the international wood formwork industry and exported to more than 20 countries around the world.