Prefabricated Concrete Assembly House
Prefabricated concrete assembly houses are a type of pre-cast housing, produced industrially and assembled on-site, offering advantages such as efficiency, environmental friendliness, and earthquake resistance, widely applied in modern construction.
Technical Characteristics
The core of prefabricated concrete assembly houses lies in industrial production and on-site assembly. Their main components (such as beams, slabs, walls, and columns) are pre-cast in factories. Molds are assembled using bolt connectors, and release agents are sprayed before placing steel reinforcement meshes and binding them into frameworks, with connectors symmetrically placed inside. During concrete pouring, vibrators are used to eliminate air bubbles, and plastic sheds are covered and heated to promote hydration reactions, ensuring component strength. Construction begins with foundation work, digging pits about 1 meter deep, laying moisture-proof PE films at the bottom, and filling with waste concrete materials as a base. After solidification, guide steel plates are installed to position prefabricated concrete piles, and finally, prefabricated components are connected like building blocks.
Advantage Analysis
- Construction Period and Environmental Protection: Industrial production significantly reduces on-site wet work, allowing a two-story reinforced concrete shell house to be completed in about two weeks while reducing dust and noise pollution. Fujian Province has established industrial bases through policy support, achieving a reduction in construction waste of over 70%.
- Earthquake Resistance: The entire house, with its reinforced concrete structure, has a large self-weight and strong stability. For example, prefabricated concrete houses in Sichuan weigh hundreds of tons and can effectively withstand earthquakes.
- Space and Efficiency: Panel assembly buildings can expand usable area; box assembly construction speeds up by 50%-70%; modular buildings have higher integration, shortening the construction cycle.
Application and Development
Prefabricated concrete technology in China began in the 1950s, initially used for factory and residential construction. In the 21st century, it has revived due to production efficiency and environmental advantages. Companies like Vanke Group have developed prefabricated shear wall residential structural systems and applied prefabricated frame technology. Driven by policies, industrial bases have been established in places like Fujian Province, achieving large-scale production. Additionally, Chinese prefabricated houses are in high demand overseas, with Guangzhou Customs reporting exports of movable houses worth 1.4 billion yuan in the first four months of 2026, a year-on-year increase of 38.1%, indicating growing international demand for efficient and environmentally friendly construction forms.
Prefabricated concrete assembly houses, through standardized design, industrial production, and modular assembly, have become an important direction in modern construction, combining economy and sustainability.
