What is a Cement Board?

Cement board, as its name implies, is a building slab processed and produced by using cement as the main raw material. It is a building product that can be freely cut, drilled and carved between gypsum board and stone. It is superior to gypsum board and wood board. Fire resistance, water resistance, anti-corrosion, insect resistance, sound insulation performance and far below the price of stone have become widely used construction materials in the construction industry. There are prefabricated and cast-in-place cement boards.

Cement board

There are many types of cement boards, which are mainly divided into ordinary cement boards, fiber cement boards, and fiber cement pressure boards according to grades; mainly divided into non-pressure boards (ordinary boards), fiber reinforced cement boards, and high-density fiber cement pressure boards according to strength; according to the fibers used Temperature

1. The standard specifications of the length and width of the cement board are 1200 * 2400mm and 1220 * 2440mm. Manufacturers can basically customize any specifications with a length of 2000-2500mm and a width of 1000-1250mm. Other specifications can be cut on this basis.

2. The thickness of the cement board is 2.5, 3, 3.5, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 40, 60, 90mm, etc.

3. Thicknesses below 4mm are referred to as ultra-thin plates, 4-5mm are referred to as thin plates, 6-12mm are referred to as conventional plates, 15-30mm and above are referred to as thick plates, and 30mm or more are referred to as ultra-thick plates. Small manufacturers without presses can only produce 6-12mm ordinary cement boards; general manufacturers can only produce 4-12mm thin boards, conventional boards, thick boards can not be done, ultra-thick boards can not be done; thickness 2.5-100mm can do There are only a few manufacturers.

1.Interior partition

2. Ceiling ceiling

3. Ground floor

4.Interior wall decoration

5. Floor partition

6. External wall panels

7. External wall hanging board

8. External wall insulation board

9, curtain wall lining board

10.Loft loft board

11.High-speed railway highway sound insulation barrier

12, electrical insulation board

13. Industrial production pads

The product quality of cement board has a great relationship with the manufacturers' equipment, raw materials, formulas, processes, production levels, management systems, etc. There are many manufacturers of cement boards and calcium silicate boards, which are almost all over the country, and their product quality varies The unevenness varies greatly, and the price varies greatly. Many businesses or manufacturers use ordinary cement boards or calcium silicate boards to pretend to be fiber cement pressure boards to deceive users. How to choose the products they really need without being deceived by unscrupulous merchants is a problem that the majority of users care about.

1. Calculated density:

The quality of the fiber cement pressure plate is closely related to the density. The user can judge the quality of the plate, whether it is a fiber cement pressure plate or a calcium silicate plate according to the weight of the plate. A good fiber cement pressure plate has a density of about 1.8g / cm3 for conventional boards, a board weight of 1200 * 2400mm in natural state is about 5.5kg / mm, a density of thick board is about 1.95, and the density of natural board is 1200 * 2400mm. The weight of the board is about 6kg / mm. The density and weight of the second fiber cement pressure plate should be lower, between 1.6-1.7 / cm3, the weight of the thin plate is about 5kg / mm, the weight of the thick plate is about 5.5kg / mm, and the density of ordinary cement or no pressure plate is 1.5mg / cm3 and weight around 4.5kg / mm. The density of calcium silicate board is about 1.2g / cm3 and about 3.5kg / mm.

2. Ask about special specifications:

Manufacturers without presses can only produce plates with a thickness of 6-12mm. Manufacturers with small presses cannot produce ultra-thin and ultra-thick plates. Manufacturers that cannot produce ultra-thin and ultra-thick plates indicate that their presses are too small or even There is no press at all, and naturally the best fiber cement pressure plate cannot be produced.

4. Choose the most powerful manufacturers:

Buying from manufacturers can avoid unscrupulous merchants to charge the goods from other manufacturers; contacting several manufacturers can compare the strength of the manufacturers on the spot to compare and buy the best products. When choosing a manufacturer, it depends on the scale and strength of the manufacturer and the management mode. Avoid small workshops or family-managed businesses.

5. View qualifications:

Formal manufacturers have relevant product qualifications, such as physical performance test reports, load test reports, sound insulation test reports, and three-standard certification. It should be noted that some unscrupulous merchants or manufacturers tamper with other people's test reports or tamper with the data of the test reports to fool users. The avoided method can log on to the testing agency's website or call to verify the authenticity of the test report and the authenticity of the data.

The national standards for fiber cement pressure plates are:

1. Asbestos-free board JC / T412.1-2006

2, chrysotile asbestos board JC / T412.2-2006