Over the past hundred years, modern architecture has developed in China. In the past 50 years, the construction industry of New China has been developing rapidly. The application of stone materials in architecture has been gradually increasing in quantity and application.
1. Noble and elegant: stone has the characteristics of noble and elegant, bright and crystal, hard and permanent, and different stone has different beauty. All kinds of public, high – grade buildings are all decorated with stone to improve the “grade”.
2. Unique and diverse: Stone is a unique building material. It has irreplaceable material properties. Its own texture is any other synthetic materials, composite materials can not be compared. When natural stone is mined, it is generally a large piece of waste material. Designers can design the size and shape of stone according to their own design requirements. At the same time, the diversification and unique processing possibilities of stone are unique among building materials.
3. Comfortable and energy saving: Stone material has good thermal conductivity and high heat storage capacity, which is conducive to energy saving because it is warm in winter and cool in summer. It has good thermal conductivity and high heat storage capacity, and as the building material of the outer wall of houses, it can be isolated from sunlight in summer.
Impact toughness: The impact toughness of stone depends on mineral composition and structure. Hardness: the strength of rockforming minerals is high, and the structure is compact, so the rock hardness is high. The hardness of the rock is expressed by mohs hardness (relative hardness) or Shaw hardness (absolute hardness) : the wear resistance of the rock is usually good because of its high strength and compact structure. The wear resistance of stone material is expressed by the wear rate (g/cm2) : 100 times grinding under A certain pressure, the wear rate M = (Mo-ml)/A, where Mo is the pre-grinding mass (g), ml is the post-grinding mass (g), A is the sample area under wear (cm2).
The stone materials used for foundation, bridge and tunnel in engineering often require three indexes: compressive strength, frost resistance and water resistance.