Concrete: Its main development dire

Concrete: Its main development direction is high-quality, lightweight, durable, and seismic (explosive) high-performance concrete. The so-called high-performance concrete refers to a variety of high-performance concrete with high durability, high strength, high fluidity, etc., which is an important aspect of the development of concrete materials in recent years. In terms of strength, concrete with a compressive strength greater than c50 belongs to concrete. Improving the strength of concrete is an important aspect of the development of high-rise buildings, high-rise buildings and large-span structures. The use of excellent concrete can reduce the cross-sectional size and weight, obtain great economic benefits, and has good durability. In order to improve the strength of concrete, the main measures taken by our country are: 1 The use of super plasticizers to reduce the water content is the main technical method to obtain high-strength concrete; 2 The use of quality cement, such as 525, 625 and 725 sulfate cement, iron aluminate Cement; 3 use high-quality aggregate; 4 use high-quality mixture, such as high-quality degradable fly ash, silica fume, natural zeolite or ultra-fine aggregate pores, etc.