· The name of the building is "Gui - Flower Ware" is the old museum of Jiangsu Provincial Art Museum (former National Art Exhibition Hall) security check booth, the main body is made of steel structure, the enclosure and the surface layer are formed by the GRC (Glass Fiber Reinforced Concrete) as a whole. With the development of construction technology and innovative materials, more and more non-linear, streamlined design, can be removed from the paper, floor molding. This has been accompanied by the use of a wide range of new materials that are suitable for shaped architectural forms. The main materials that can be used to create shapes are the following: GRC, GRG, GFRP, TCP, UHPC.

1, terminology
(1) GRC (Glass Fiber Reinforced Concrete), Chinese name for glass fiber reinforced concrete. It is a kind of lightweight high-strength inorganic composite materials, because of its plasticity, modeling and other advantages, it is widely used in building exterior wall decoration.

(2) GRG (GlassFiber Reinforced Gypsum) is pre-cast glass fiber reinforced gypsum board, which is a special decorative improved fiber gypsum decorative materials, can be made into a variety of flat panels, curved panels and modeling boards.

(3) GRP, or FRP (Fiber Reinforced Plastics), GFRP (Glass Fiber Reinforced Plastic), is a glass fiber reinforced composite plastic, commonly known as FRP. It is a lightweight, corrosion-resistant, malleable material with excellent mechanical and thermal properties.

(4) TCP (Themed Cement Plaster), the Chinese name of the theme of cement mortar sculpture, referred to as cement direct molding, is the use of cement mortar direct molding process produced by the landscape, the internal support by the steel skeleton plus wooden crosses, the external sculpture of the clay sculpture and become. tcp is a plasticity is very strong in the production of building materials in the construction site can be done in a variety of natural plastinated stone, wood grain, bamboo etc. In the theme park and even the landscape industry has a large proportion, widely used in cultural and tourism projects, such as: Changlong tourism resort, Disney, Universal Studios, etc., the technology is particularly suitable for outdoor with a specific theme culture of hard landscape atmosphere implementation.

(5) UHPC (Ultra-High Performance Concrete) is an ultra-high strength cementitious material with high strength, high toughness and low porosity. Its basic formulation principle is: by improving the fineness and activity of the tissue components, without the use of coarse aggregates, so that the pores and micro-cracks within the material to a minimum, in order to obtain ultra-high strength and high durability. It is the most innovative cementitious engineering material in the past three decades, realizing a big leap in the performance of engineering materials.

2. why choose these materials
Free-form architectural curtain wall with its strong artistic expression can create a personalized artistic space and enhance the visual impact and infectious force of the building. The most common material used to construct shaped buildings is metal panels, whether stainless steel or aluminum panels, which can be produced in factories and then connected by skeletons on site, ultimately forming a complete and continuous façade effect.

In the 1970s, Frank Gehry first used factory-produced metal panels as building envelope materials, opening up a precedent for metal building skins. He once likened it to the fact that if it costs $1 to build a flat unit, it costs $2 for a unidirectional surface and $10 for a hyperbolic surface.

A total of 45,133 metal panels were used in Seoul's Dongdaemun Plaza, designed by Zaha, with hyperbolic panels accounting for 48.2%, monocurved panels for 21.2%, and planar panels for 30.7% of the cost of its curtain wall.

The cost and construction process of the metal panel curtain wall at Dongdaemun, Seoul, are at the leading level in the industry, but not all curved metal panel curtain walls can be made so "silky smooth". If there is a discrepancy between the coordinates of the keel at the site and those of the actual modeling keel, the aluminum panels can be installed in such a way that they can only be matched to the keel by tapping and deforming the aluminum panels, and the following unevenness will occur.

Although the single flat cost of aluminum sheet is lower than that of GRC, in curved surfaces, especially in hyperbolic surfaces, GRC may have a price advantage over aluminum sheet to achieve a very flat skin effect, while the cost of GFRP is even lower than that of GRC. Therefore, the choice of materials such as GFRP and GRC not only realizes different textures on curved surfaces, but also saves the cost of building façade when used on large areas.

Compared to metal panels, GRC and UHPC panels also have the advantage of a single area, a single metal plate area is usually not more than 2 square meters, while GRC single plate can even do 30-40 square meters, a larger area means that the installation process is simpler, shorter installation cycle. At the same time, fewer seams can also bring more continuous façade effect. Therefore, in the curved surface large area use, GRC and other materials have exceeded the metal plate, become more favored by the architects of the external wall surface decoration materials.

3. how to apply
Among the five materials mentioned above, GRC, GRG, GFRP, TCP, UHPC, TCP is special.

TCP (cement direct molding, also known as the theme of cement mortar sculpture) is more special. tcp is a very plastic production of building materials, it is a sculpture made of cement stone process, the internal use of steel skeleton welding, in the site site can be done in a variety of natural plastisol, wood grain, bamboo and so on. In the theme park and even the landscape industry has a large proportion, widely used in most of the world's park projects, such as: Disney, Universal Studios and so on. The technology is especially suitable for the implementation of outdoor hard environment atmosphere with specific theme culture.

GRC and UHPC are commonly used in building facade decoration. Although they can also be used for indoor space decoration, UHPC will have a higher cost compared to GFRP and GRG, while the degree of gloss of GRC is not as high as GRG, and GRC will be much heavier compared to GRG materials. Therefore, the application of GRC and UHPC in interior design is limited. Comparison of the two, UHPC will be more expensive than GRC, and is mostly used in the shape of a large aspect ratio or more hollow places.

GFRP and GRG are commonly used in interior decoration, and FRP's base material, resin, softens at high temperatures, which leads to a decrease in FRP's mechanical properties. The poor fire performance is one of the main reasons to limit the application of FRP in the exterior wall, although GRG is strong, but its essence is still gypsum, the chemical composition is mainly CaSO4-2H2O, slightly soluble in water; although the fire rating of A1, but its water resistance is poor, high water absorption, poor impermeability and anti-freezing, so it is not suitable for outdoor use.