Precast Concrete Slabs
Precast concrete slabs There are various kinds of cement board, which are divided into ordinary cement board, fiber cement board and fiber cement pressure board. According to the strength, it is divided into non-pressure plate (ordinary board), fiber reinforced concrete slab, high-density fiber...
Precast concrete slabs
There are various kinds of cement board, which are divided into ordinary cement board, fiber cement board and fiber cement pressure board. According to the strength, it is divided into non-pressure plate (ordinary board), fiber reinforced concrete slab, high-density fiber cement pressure plate; The fiber is mainly composed of warm asbestos fiber cement board and non-asbestos fiber cement board.
1. Ordinary cement board.
Ordinary cement is used widely in one of the most cheap products, the specification is given priority to with 1200 * 2400 *, between 6 and 12 mm thickness, the market price is roughly 10 RMB 20 yuan, main ingredients are cement, fly ash, sand, the lower the price the lower the dosage of cement, some manufacturers to reduce costs even without cement.
2. Fiber cement board.
Fiber cement board, also known as fiber reinforced concrete and ordinary concrete added is the main difference between various fiber as reinforced material, make the strength of the concrete, flexible, greatly increased folding resistance, impact resistance, etc. The added fibers are mainly mineral fibers such as asbestos, vegetable fibers such as paper pulp, synthetic fibers such as vinylon, man-made fibers such as glass fiber, etc. According to the addition of fiber, it is divided into warm asbestos sheet and asbestos free board.
3. Fiber cement pressure plate.
Fiber cement pressure plate in the process of production is the main difference between the special press suppression and become, has a higher density, waterproof, fire prevention, sound insulation performance, higher load, bending, impact resistance is stronger, the performance of high and low in addition to raw materials, formula and process, depending on the size of the compressor pressure
The advantages of the cement board mainly lie in:
1. The biggest disadvantage of gypsum board is that it is not waterproof. The concrete slabs are waterproof, moisture-proof and moisture-resistant, and the physical properties of anti-impact resistance are much better than gypsum board.
2. The biggest disadvantage of the density board is that it is not fireproof, and the concrete slabs are non-combustible materials, and the sound insulation effect is much better than the density board.
3, appearance and shape of the calcium silicate board, with cement are similar, but the calcium silicate board is a chemical product, siliceous and calcareous produces the result of a chemical reaction at high temperature, so the production of calcium silicate board companies have autoclaved kettle. Calcium silicate plates also have asbestos and asbestos-free, and three or four dollars a millimeter is made of asbestos. The density of calcium silicate board, folding resistance, impact resistance, sound insulation performance is lower than in cement, so there are many businesses on the market for calcium silicate board as fiber cement pressure plate to deceive users.
4. The cement slabs are mainly the price advantage and continuous supply capacity relative to the stone materials, and have the advantages of high corrosion resistance and long service life for other sheets, such as aluminum and plastic plates.