Prefabricated Concrete House Construction

Prefabricated concrete house construction is an efficient, precise, and environmentally friendly building method that combines factory prefabrication with on-site hoisting. The specific construction process and characteristics are as follows:

Factory prefabrication stage: Full-process mechanized operations are completed on standardized production lines, covering steel bar tying, mold assembly, concrete pouring, and other steps. The production cycle for a single module is only 7 days, with errors strictly controlled within 2 millimeters to ensure component accuracy. C35 concrete and Φ14 deformed steel bars are used, with a reinforcement ratio of 1.2%. The wall thickness is 200mm, and the compressive strength reaches 30MPa, ensuring structural strength. For example, during the 2024 Shenzhen epidemic prevention efforts, a project built 300 isolation wards in 48 hours through factory prefabrication, reducing the traditional construction period by 90%.

On-site hoisting stage: After the prefabricated components are transported to the construction site, a 50-ton crane, combined with an intelligent positioning system, can complete the installation of the main structure of a single villa in 4 hours. Taking the construction site in Qixian, Henan as an example, a 30-ton concrete module completed the hoisting of the main structure of a 200㎡ three-story villa in 4 hours, and a 100㎡ house can be ready for occupancy in just 5 days from an empty lot, significantly shortening the construction period.

Connection technology: Modules are connected using a double connection method of mortise-and-tenon joints and prestressed bolts (with a tensile strength of 25 tons), ensuring structural stability. In a Wenchuan earthquake simulation test, the overall displacement was only 3cm under a 9-degree intensity shake, verifying its seismic performance.

Performance advantages:

• Efficiency improvement: The construction period for a 300㎡ house is shortened from the traditional 6 months to 1 day, with an efficiency improvement of 180 times; labor costs are reduced by 60% (from 60,000 yuan to 24,000 yuan for a 100㎡ house); and construction waste is reduced by 98% (from 30 tons per building to 0.5 tons per building).
• Environmental protection and energy saving: The walls are embedded with EPS insulation layers (with a thermal conductivity of 0.03W/(m・K)), saving 50% on heating costs in winter; the roof is reserved with photovoltaic panel interfaces, and a 200㎡ house can generate up to 3,000 kWh of electricity per year.
• Disaster resistance: In a real-world test of a typhoon in Yangjiang, Guangdong, it withstood a 12-level typhoon (with a wind speed of 37m/s), with no脱落 (peeling off) of exterior wall tiles and a deformation of the doors and windows of less than 1mm.

Application scenarios and customized services: Suitable for temporary residences, construction site offices, dormitories, rural villas, shops, etc., with a service life of over 70 years and snow load and wind resistance performance reaching special-grade standards. The specifications and sizes can be customized, with a minimum order quantity of 20 square meters and a starting price of 255 yuan per square meter. Payment methods such as Alipay, WeChat, and bank transfers are supported.