Prefabricated Concrete Houses in Chongqing

The following is an overview of prefabricated concrete houses in Chongqing:

I. Market and Policy Environment
The market for prefabricated concrete houses in Chongqing is vibrant. As of July 21, 2024, there are 140 pieces of related product information. At the policy level, the Chongqing Housing and Urban-Rural Development Commission is actively promoting the modernization of the construction industry and facilitating the implementation of technology through the certification of standardized building components. For example, in the "Chongqing Residential Building Component Certification List (No. 13)" released on March 10, 2025, components such as "prefabricated concrete stairs" from Chongqing Huanan Prefabricated Parts Co., Ltd. were included in the promotion scope, requiring construction units to give priority to their selection and strengthen quality control. This policy provides institutional guarantees for the standardized development of prefabricated concrete houses.

II. Production Enterprises and Technical Characteristics
Enterprises in and around Chongqing have developed production capabilities. For instance, Sichuan Fubainian Cement Houses has established a branch factory in Hechuan District, Chongqing, producing assembled cement houses using the one-time pouring process with C35 commercial concrete and large steel molds. The core technologies include:

• Structural Safety: The design features a "full-frame shear wall" with a framework composed of Φ10-φ14 national standard threaded steel bars. Each module weighs over 20 tons, with wall thicknesses ranging from 150-200 mm and floor thicknesses of 120 mm. Tests show that it can withstand an 8-magnitude earthquake (with a designed seismic fortification intensity of 7 degrees), and under a 12-level typhoon, the module connections remain secure, with a fire resistance limit of the concrete exceeding 3 hours.
• Construction Efficiency: Standardized factory production of a single module (30㎡) takes only 7 days. During on-site installation, a 50-ton crane, assisted by 3 workers, can complete the lifting of a single module in 4 hours. The overall installation of a 100㎡ house takes only 1 day, reducing the construction period by 90% compared to traditional methods. The modules come with pre-embedded water and electricity pipelines, ready for connection upon arrival at the site.

III. Cost and Environmental Advantages
Taking a 120㎡ rural self-built house as an example, the main construction cost of an assembled cement house ranges from 120,000 to 150,000 yuan, saving 30% compared to traditional brick-and-mortar structures (which cost 180,000 to 220,000 yuan). The construction period is shortened from 120 days to just 3 days, and construction waste is reduced by 90% (only 1.5 tons compared to 15 tons for traditional methods). This model significantly reduces time, labor, and material costs while aligning with the trend of green building development.

IV. Application Scenarios and Prospects
Prefabricated concrete houses are suitable for rural self-built houses, temporary buildings, and post-disaster reconstruction. Their modular design, rapid installation, and high cost-effectiveness align with Chongqing's goal of promoting the modernization of the construction industry. With policy support and technological advancements, market penetration is expected to increase further in the future.