Autoclaved aerated concrete slab (alc slab) is a new type of light, porous and environmentally friendly building material, which takes cement, lime, silica sand and other main raw materials and adds different amounts of steel mesh pieces after anti-corrosion treatment according to structural requirements. After high temperature and high pressure and steam curing, autoclaved aerated concrete slabs with porous crystals are produced by reaction. The density of autoclaved aerated concrete slabs is smaller than that of ordinary cement materials, and they have good fire resistance, fire prevention, sound insulation, heat insulation and other properties.

二、Characteristics and advantages of autoclaved aerated concrete plate

1. Lightweight: The specific gravity is only 500~650kg/m3, which is only 1/4 of that of concrete and 1/3 of that of clay brick, so it is known as concrete floating on the water. The design value is 650kg/m3.

2, fire resistance: 100mm thick plate can reach 3.82 hours, 125mm thick plate can reach more than 4 hours, which is a first-class fireproof material.

3. Thermal insulation: the thermal conductivity is 0.114, and the thermal insulation effect of the material with a thickness of 125mm can reach that of an ordinary brick wall with a thickness of 370mm. It is a new building material that can achieve building energy saving of more than 65% with a single material.

4. Sound insulation: the sound insulation index of 100mm thick plate (double-sided putty) reaches 40.8dB (transmission loss); The sound insulation index of 120mm thick plate (double-sided putty) reaches 45dB (transmission loss); The sound insulation index of 150mm thick plate (double-sided putty) is 48dB (transmission loss); There are many tiny pores in ALC board, which has double properties of sound insulation and sound absorption.

5. Seismic resistance: it can adapt to large interlayer displacement, allowing interlayer displacement angle of 1/150, and it will reach 1/120 when special contacts are used, and the plate will not fall off when interlayer displacement angle is 1/20 in all contact cases.

6. Environmental protection: no radiation, with an hourly exposure of 12γ μ /h, equivalent to the level on the outdoor grass; ALC is a new type of environmental protection building material, which can also save energy consumption during use, and belongs to the national duty-free building material.

7. Bearing capacity: Double-layer and two-way steel mesh sheets are provided in the plates, which provide external wall panels, partition panels, roof panels, floors, decorative panels, etc.

8. Crack resistance: ALC plate is reinforced by steel bars which have been rusted, and it is cured by high temperature, high pressure and steam. The shrinkage ratio in inorganic materials is small, and special polymer adhesive is used for caulking to effectively prevent cracking.

9. Convenience: The ALC board is manufactured to length after field measurement. It is a factory prefabricated product with high precision, and can be planed, sawed and drilled. Dry operation is adopted, the installation is simple and the process is simple. The structural column, waist beam and plastering of the traditional wall are cancelled, and the putty is directly scraped, which greatly shortens the construction period and improves the efficiency and construction quality.

10. Economy: Using ALC as the wall material can effectively increase the use area of the building, reduce the energy consumption, and reach the national building energy-saving standards. Under the same requirements of sound insulation and fire prevention, the thickness of ALC board is small, and auxiliary components such as structural columns, ring beams and waist beams are not needed, which can reduce the wall load and further reduce the construction cost.

11. Creativity: ALC board can be made into artistic pattern board, which can directly achieve the effects of brick pattern, grid pattern, horizontal pattern, brick imitation and stone imitation after installation.

12. Extensibility: It can be used in concrete structure, steel structure residence, frame structure, office building with frame-shear structure, internal and external walls, floors, roof panels, firewalls, explosion-proof walls, fire protection maintenance of steel structure beams and columns, sound insulation walls, storey-adding renovation of old buildings, etc.

13. Diversity: there are also 50mm thin plates and 30mm ultra-thin plates (which can be used as external wall insulation boards and fire prevention boards).

14. Quickness: The work of mixing, masonry, plastering, steel bar, formwork and concrete in the traditional block technology is eliminated, and all the work can be completed only by the plate installer, thus avoiding the conflict and mutual restriction of work types.

15. Specificity: the width of ALC plate is 600mm, and the length can be 6 meters (150mm thick), while the length of other plates can not reach 6 meters.

三、Application scope of autoclaved aerated concrete plate

1, the old building renovation project. Energy-saving renovation of existing buildings is a planned undertaking of the state, which will be carried out for a long time. In this kind of project, it is a wise choice to adopt lightweight external wall panels. Compared with other exterior wall materials, lightweight thermal insulation wallboard has the advantages of simple and quick installation, short construction period, low cost, less interference to the normal work and life of residents, and waterproof and anti-aging, so it is more and more popular in this kind of engineering.

2, office buildings, hospitals, school classrooms, office buildings, shopping malls, supermarkets, hotels and guest rooms of public buildings and residential, apartment and other civil building filler walls (including bathrooms, kitchens, household walls, partition walls and external walls, etc.). The common characteristics of this kind of buildings are many compartments, simple and unified internal structure, and often need to adjust the internal structure according to customer needs, so it is more suitable to use light partition board.

3. Interior decoration. At present, the main material used as room partition is light steel keel gypsum board. Compared with light wallboard, this material has low strength, poor sound insulation effect, poor durability and no obvious advantage in price. Therefore, many users now turn to light wallboard as room partition.

4. Because of its light weight, this material is the main wall building material for the steel structure building (factory building/public building/residence, etc.) which has developed very well abroad.

Aerated concrete plate is a porous slab made of siliceous material and calcareous material as main raw materials, aluminum powder as gas-generating material, and steel mesh treated with anticorrosion, which is mixed with water, cast and molded, pre-cured, cut and autoclaved. From the initial raw material processing to the finished product discharging, the solution of positive aerated concrete plate production line will well meet the processing needs of various customers.

Aerated concrete plate production line is improved on the basis of aerated concrete block production technology. Compared with other lightweight boards, aerated concrete board has obvious advantages in board performance, product stability, raw material source and production scale. Aerated board can be divided into partition board, external wall board, roof board (floor), fire-proof board, etc. It is widely used in industrial and civil buildings such as concrete structure and steel structure.

Henan Zhengyi Machinery has many years of production and design experience in the field of aerated concrete building materials. Choosing Zhengyi Machinery, you will not only get high-quality equipment, but also have a project plan tailored for you by experts. Equipment installation, debugging, technical training, including every little detail of your production and maintenance, Zhengyi Machinery is always at your service.