First, prefabricated building materials can significantly increase labor productivity.

Many well-known, China's construction industry has been a labor-intensive industries. To put it bluntly, it requires many people to "help" to complete it. However, in recent years, the construction industry has shown signs of "labor shortage" and "expensive labor. According to statistics, construction workers2014-Approximately 7 million fewer people in 2019. And the average daily wage of construction workers in many places reaches 300-500 yuan, exceeding that of ordinary white-collar workers.

With the gradual disappearance of the demographic dividend, the demand of construction enterprises to improve labor productivity and reduce labor costs is increasing.

Prefabricated building materials, is the subdivision of "parts" in the factory mechanized processing and manufacturing, finished products and then transported to the construction site for direct installation. This method of replacing manual production with machinery can not only improve the problem of "labor shortage" and "expensive labor", but also greatly improve the construction efficiency. It is understood that the use of prefabricated building materials to build houses can shorten the construction cycle by at least half.

Secondly, prefabricated building materials are gaining more development opportunities with the help of the implementation of building industrialization.

It is reported that in order to promote the development of construction industrialization, last month, the Ministry of Housing and Urban-Rural Development issued the "Guiding Opinions on Promoting the Coordinated Development of Intelligent Construction and Construction Industrialization." The opinion is put forward,2035In 2010, our country should realize the industrialization of construction in an all-round way. Thus, the development of construction industrialization has become the inevitable trend of China's construction industry.

There may be friends wondering, what is the connection between the development of building industrialization and prefabricated building materials?

The basic characteristics of national definition of construction industrialization are shown in four aspects: standardization of architectural design, mechanization of construction, factory production of components and accessories, and scientific organization and management. Among them, the factory production of components is the material basis for the industrialization of construction. Simply put, the building materials that can meet the characteristics of building industrialization are actually based on the three words "prefabricated". Prefabricated building materials are an important part of building industrialization. Therefore, the development of construction industrialization is also the development of prefabricated building materials.

China is the country with the largest amount of new construction in the world, with an area of about 2 billion square meters per year. And in this hot land of building, "short-lived buildings" emerge in endlessly. The Minister of Housing and Construction has said frankly that the average life span of buildings in China is only 30 years. Compared with foreign buildings, it is indeed a bit of "dying young.

"Short life" buildings are very harmful. For ordinary people, it will cause economic damage. Now the property right of commercial housing is 70 years, about 40 years longer than its average life cycle. At present, the warranty period given by the developer is generally 5 years. After the warranty period, there are quality problems in the house, and basically the residents can only pay for it themselves.

What can prefabricated building materials change?

Different from traditional construction methods, prefabricated building materials realize standardized production, mechanized production, and refined production under a unified quality system process, which can significantly reduce human construction errors and improve construction quality. American scholar Basler has carried out several months of statistical determination of the strength of concrete and cast-in-place concrete in precast factories. The results show that the coefficient of variation of cast-in-place concrete structure reaches 17%, while the coefficient of variation of precast concrete structure is only 7%.