cement board 9mm.Cement board and calcium silicate board

cement board 9mm.Cement board and calcium silicate board. Cement is a kind of building slab processed and produced as the main raw material. It is a kind of building product between gypsum board and stone, which can be cut, drilled and carved freely. 

It has become a widely used building material in the construction industry because of its fire prevention, waterproof, anti-corrosion, pest prevention and sound insulation performance superior to gypsum board and wood, and its price is far lower than that of stone.

It is mainly divided into ordinary cement board, fiber cement board and fiber cement pressure board according to the grade;

According to the strength, it is mainly divided into non pressing plate (ordinary board), fiber reinforced cement board and high-density fiber cement pressure board;

According to the fiber used, it is mainly divided into chrysotile asbestos fiber cement board and non asbestos fiber cement board.

1. Ordinary cement board: it is the lowest grade product widely used. The thickness is 6-12mm. The market price is 20-60 yuan/piece. The main ingredients are cement, fly ash and sand. The cheaper the price is, the lower the cement consumption is.

2. Fiber cement board (see below for details): The main difference between the fiber cement board and the ordinary cement board is that various fibers are added as reinforcement materials, which greatly improves the strength, flexibility, bending resistance, impact resistance, etc. of the cement board. The added fibers mainly include mineral fibers such as asbestos, plant fibers such as pulp, synthetic fibers such as vinylon, and man-made fibers such as glass fiber. According to the different fibers added, it is divided into chrysotile asbestos board and non asbestos board.

3. Fiber cement pressure plate: the main difference is that it is pressed by a special press during production, with higher density, higher waterproof, fireproof and sound insulation performance, and stronger bearing, bending and impact resistance. Its performance depends on the size of press pressure in addition to raw materials, formula and process.

The boards used for decoration mainly include gypsum board, density board, calcium silicate board, cement board, stone, various metal boards, etc., which have their own advantages and disadvantages in performance performance price ratio. The advantages of cement board mainly lie in:

The biggest disadvantage of gypsum board is that it is not waterproof. Cement board is also far superior to gypsum board in physical properties such as waterproof, moisture-proof, moisture resistance, bending and impact resistance.

The biggest disadvantage of density board is that it is not fireproof. Cement board is incombustible material, and its sound insulation effect is far better than density board.

The appearance and shape of calcium silicate board are very similar to that of cement board, but calcium silicate board is a chemical product, which is the result of chemical reaction of silica and calcium under high temperature, so all enterprises producing calcium silicate board have autoclaves. Calcium silicate board also has asbestos and non asbestos. The density, bending resistance, impact resistance and sound insulation performance of calcium silicate board are lower than those of cement board, so many businesses in the market use calcium silicate board as fiber cement pressure board to deceive users.

Compared with stone, cement slab has price advantage and continuous supply capacity. For other slabs such as aluminum plastic slab, it has advantages of high corrosion resistance and long service life in addition to price advantage.

The product quality has a great relationship with the manufacturer's equipment, raw materials, formula, process, production level, management system, etc., and the price also varies greatly. Many businesses or manufacturers use ordinary cement board or calcium silicate board as fiber cement pressure board to deceive users. How to choose.

1. Calculated density: the quality of fiber cement pressure board is closely related to the density. In natural state, the weight of 1200x2400mm board is about 5.5-6kg/mm, and the density is about 1.95/cm3; The density of ordinary cement or non pressing plate is about 1.5mg/cm3, and the weight is about 4.5kg/mm; The density of calcium silicate board is about 1.2g/cm3 and 3.5kg/mm.

2. Ask about special specifications: manufacturers without a press can only produce plates with a thickness of 6-12mm. Manufacturers with small presses cannot produce ultra-thin and ultra-thick plates. If the press is too small or there is no press, it is impossible to produce the best fiber cement pressure plate.

3. Select the most powerful manufacturer: when selecting a manufacturer, it depends on its scale, strength, management mode, etc. Avoid small workshops or family managed enterprises.

4. Check the qualification: all formal manufacturers have relevant product qualifications, such as physical performance test report, load test report, sound insulation test report, three standard certification, etc.