Concrete is the most important basic building material in modern construction engineering. It has many advantages and has been widely used in engineering in various fields. Different concretes have different mass densities. According to their quality, they can be divided into heavy concrete, ordinary concrete, and light concrete. The specific characteristics are as follows:

1. Heavy concrete: It has also become radiation concrete, shielding concrete, etc. The main feature is that it can effectively shield the atoms and radiation generated by atomic energy reactors, especially the penetration of a and G rays is low, and it is easy to be absorbed. Heavy concrete Can be completely blocked.

This product has strong stability, good uniformity, thermal conductivity and as little shrinkage as possible, contains sufficient hydrogen, has high structural strength, is impervious to water, airtight, has good heat resistance, has no corrosive effect, and is anti-corrosive. The radiation effect is superior.

2. Ordinary concrete: Ordinary concrete is often used in general buildings, and its basic strength and durability can reach national standards, including what we often call high-performance concrete with high fluidity, high strength and high durability.

The durability and volume stability of this type of concrete are relatively high, and there are many classifications, which can meet the different requirements of engineering construction in different regions, different environments and different requirements. At the same time, the workability, slump, water rate, water reduction rate, air content, strength, impermeability, etc. can be adjusted according to needs.

3. Light concrete: Lighter concrete and ultra-light concrete are made of lighter coarse and fine aggregates, and other substances are added to gradually reduce the density and quality of the concrete. It is lightweight and high-strength, has good thermal insulation performance, and good seismic performance. It occupies an important position in the wall.

This type of concrete has good energy-saving, thermal insulation properties, and is one of the materials that replace clay bricks. It is more and more widely used in engineering. It can not only speed up the progress of the project, but also improve the quality of the project. The application history is short but Excellent effect.

These three types are our common three types of concretes with different mass densities. Concretes with different densities and qualities have their own unique characteristics and application fields. The research and development and utilization of admixtures have played a very important role in promoting the development of concrete. The development of concrete will be even more important in the future. Like environmental protection, green, energy-saving development.