Combi wall is a new generation of high-performance building internal partition board, which is made of a variety of building materials, instead of the traditional bricks and tiles. Combi wall has the obvious advantages of environmental protection, energy saving and pollution-free, light weight, earthquake resistance, fire prevention, heat preservation, sound insulation and quick construction. This article will introduce the development history of combi wall.
Preparation method of combi wall
Development history of combi wall
The future prospect of combi wall
Combi wall uses ordinary portland cement, sand, fly ash or other industrial wastes such as water slag and furnace slag as fine aggregate, then adds polystyrene particles and a small amount of inorganic chemical additives, and cooperates with the full-automatic high-efficiency forced light aggregate special mixing system. During the mixing process, air is introduced into the core layer to form honeycomb like stable pores to further reduce the bulk density of the product, which reduces the material formation The utility model can achieve the ideal heat preservation and sound insulation effect. Polyphenylene particles and pores are evenly distributed in the combi wall, which makes the concrete form a circular honeycomb skeleton, thus supporting each other and increasing the compressive capacity. The addition of fly ash not only improves the workability of the concrete slurry, but also the strength of the cement in the later period, so as to enhance the strength of the product after maintenance. The flexural strength increases by 80% and the modulus of rupture increases by more than 50%. The use of fly ash also enjoys a series of preferential policies, such as national energy saving and emission reduction tax preferential policies, tax exemption for several years, etc
Since ancient times, China has a tradition of digging and burning bricks. With the spirit of national energy conservation and emission reduction, in order to achieve the "11th Five Year Plan" goal of the development of new-type combi wall materials, adjust the industrial structure, save land resources and energy, and protect the environment, in line with the strategic goal of sustainable development, China has fully banned the use of solid clay bricks by the end of 2005, which marks China's combi wall reform has entered a new stage. Therefore, a new type of combi wall material came into being. In the early stage of development after the reform, a variety of partition materials emerged, such as aerated brick, hollow board, gypsum board, magnesite board, cement brick and other representative materials. Although each kind of product has its own characteristics, it has its own field space in the market. However, the market demands a new combi wall material which can integrate the performance characteristics of the above materials. In this environment, the combi wall was born.
According to data statistics, using combi wall can save about 30% of the total cost, and the construction efficiency of plate wall is at least three times higher than that of block and brick wall. The proportion of wallboard in the world's advanced countries and regions is 72% in Japan, 69% in Europe and America, 60% in Hong Kong and 46% in the Middle East and Southeast Asia. In China, the usage of combi wall only accounts for about 10%. The huge demand for building materials in China and the wide use of new plates in Europe and America indicate that the development potential of new-type combi wall materials in China is huge.
In the development of combi wall for many years, each manufacturer has different understanding of the future market development trend. There are many kinds of combi wall in the market. The strength of product research and development makes the quality of each type of products of each manufacturer gradually widen the gap. The mainstream technology of combi wall is mature, fire-proof, time-saving and labor-saving, impermeability, sound insulation, strong practical adaptability and other high-quality combi wall, and the lightweight combi wall is the preferred product in the industry. After years of continuous updating of research and test formula with many famous domestic colleges and universities as research subjects, and learning from the combination of technology in other fields at home and abroad, the quality of combi wall has become mature in terms of impermeability, light weight, fire protection, etc., and it also takes into account the superior performance in terms of sound insulation, impact resistance, etc. With the development of many years, the supporting industries and facilities for the combi wall are gradually improving, and the combi wall is gradually expanding from the original high-end market to the middle end market. There is a broader space for development and in-depth development and application of combi wall in the future.
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