The sustained and stable high-speed development of China's economy over the years has created the world's largest construction market, and has also brought rare development opportunities to the concrete industry. The annual output of fair-faced concrete has ranked first in the world for many years. Great progress has been made in the basic theoretical research and engineering practical technology of fair-faced concrete. At present, Chinese implementation of Economic and Social Sustainable Development Strategy has put forward the requirements of energy saving, land saving and green environmental protection for the development of the construction industry. The fair-faced concrete industry has higher and higher requirements for structural durability, and environmental friendly high-performance concrete has got increasing attention and development. At the same time, Chinese urban construction is currently in a situation of "one thousand cities and one side"，which means urban construction of different cities is highly similar. Solving this problem depends not only on the innovation and development of architectural design concepts, architectural design shapes and building functions, but also on innovation and breakthrough in building materials. Concrete, as the largest building material in China and even in the world, will play a vital role. Among them, fair-faced concrete has received more and more applications and attention in recent years, and some experts predict that in the next 5 to 10 years, concrete will play a vital role. The usage of fair-faced concrete will increase by 3 to 5 times, becoming an important category of concrete materials.

Definition and Origin of Fair-faced Concrete

Fair-faced concrete refers to the concrete that has been artistically processed by using finishing and modeling techniques. It uses the plasticity of concrete and the features of material composition and its own solemnity, and takes appropriate measures to make the surface have decorative linearity and texture, and to improve its color effect as much as possible when the wall and other components are formed, which is to meet the design requirements of building facade exterior decoration, this is the basic concept of fair-faced concrete. The difference between fair-faced concrete and normal concrete is that it emphasizes the artistry of modeling and the specificity of materials. For the aspect of concrete, the so-called artistry means not only features of standardization and industrialization but also features of individuality and aesthetics. The so-called material specificity means the effects except for distinguishing the regular texture of concrete products, such as stone effect, wood effect, metal effect, etc. Different kinds of fair-faced concretes are showing different kinds of aspects in the architectural environment.

In people's impressions, concrete is a kind of gray, stiff and rough material. For a long time, many people thought that concrete is only suitable for the application of structures or for walls and floors,but when people faced the fact that the wave-shaped ceiling of the Beijing National Grand Theater Concert Hall was made of concrete was accepted by the world and the moment Beijing Olympic Friendship Forest sculpture was unveiled, they began to no longer limit the application of concrete, and gradually connected concrete with art, because people saw that the fair-faced concrete that came out of concrete was completely a kind of decorative material with much imagination , which can turn different kinds of artistic images imagined by architects and sculptors into reality, so that the architectural design effect is no longer limited to the limitation of materials, and made the decorative art developed to a higher level. For example, wall reliefs, artistic murals, facade decoration, three-dimensional sculptures, landscape modeling, etc., the forms that as long as architects and sculptors can imagine, can be recreated by using fair-faced concrete. Besides the color of fair-faced concrete has also change greatly. The color can be selected according to the artist's creation needs.Even the material has changed fundamentally, it has evolved from simple cement, sand, and stone to ones which were added various polymers, steel fiber, mineral fiber, plant fiber, polymer fiber and other materials to increase the strength and toughness, and the molding form has also begun to become three-dimensional from the previous flat decoration. Fair-faced concrete can not only publicize the personal hobbies and characteristics of architects and sculptors, but also reflect the spirit of the ages and meet the requirements of energy conservation, environmental protection and sustainable development.

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