Fabricated buildings are mainly divided into concrete precast buildings, steel structure precast buildings and wood structure precast buildings.

Effectively respond to the national call to “promote recycling production mode”; Reduce the occupation of land resources by construction waste landfill and the pollution of surface and underground water sources by harmful substances in the waste (construction waste accounts for about 40% of the total waste in the whole society); Turning waste into treasure, recycling of industrial waste: industrial waste is the main material in the composite wall, turning waste into treasure; The light grouting filling material is mainly made of industrial wastes such as fly ash, which effectively responds to the national call of “promoting the resource utilization of industrial wastes”.

From the perspective of the national situation, precast buildings have become an irresistible trend.

Lifting Anchor

The precast buildings with environmental protection indicators can effectively reduce the amount of wet work on the construction site, reduce labor costs, reduce material waste to a certain extent, and reduce construction noise, dust pollution, construction waste and sewage discharge.

The self weight of precast building structure housing with material saving index is 900-1000kg/㎡, while that of traditional brick concrete structure is 1500-1800kg/㎡, which reduces about 40%.

This can reduce the consumption of cement, sand and gravel, and greatly reduce the carbon emissions generated in the process of mineral excavation and transportation.

In recent years, with the increasing environmental pressure, urbanization and the development of the real estate industry, precast buildings have entered a period of rapid development and innovation.

How can it become a feature of green buildings? Look down: compared with the traditional brick concrete structure, the CO2 emission of precast housing can be reduced by 35% or more.

So why is precast building the first green building? Let’s further understand! First, what is precast architecture? Let me tell you in detail: precast buildings are characterized by standardized design, factory production, assembly construction, integrated decoration and information management, integrating various business fields such as R&D design, production and manufacturing, and on-site assembly to achieve energy conservation, environmental protection A new type of sustainable building production mode with the maximum value of the whole cycle.

However, it entered a low tide around the 1990s, and a new round of development began only at the end of the 20th century.

It is warm in winter and cool in summer, which is three times the thermal insulation performance of traditional buildings, and can greatly reduce the operating energy consumption.

The advantages of such buildings are fast construction, less restricted by climate conditions, less environmental pollution, labor saving and improving building quality.

The precast structure residence with water-saving index is mainly constructed by on-site assembly, and the reduction of water use and sewage discharge in the process is equivalent to the total water volume of 10 West Lakes.

Statement:.

Energy saving index The precast structure residential wall has a good thermal insulation function.

In addition, wood formwork and scaffolding are not required during the construction process, which can reduce wood cutting, reduce the self weight of buildings, and save 30% of underground pile foundations.

When the building is demolished, the material recovery rate of the main structure of the structural residence is more than 90%, which is about 60% less than the traditional concrete waste discharge.

Especially since 2016, the state and local governments have repeatedly issued guiding, HP and encouraging policies to promote the development of precast buildings.

The development of Chinese precast architecture originated in the 1950s, and ushered in its first development in the 1970s and 1980s.

At present, from the perspective of the total number of precast buildings, it has reached 290 million square meters in 2018.