Prefabricated Concrete Components for Concrete Houses
Prefabricated concrete components for concrete houses are concrete members pre-fabricated in factories or construction sites and installed at designed positions using lifting equipment. They offer technical advantages such as shortened construction periods and reduced pollution, and are widely applied in fields like construction and municipal engineering.
I. Definition and Production Process
Prefabricated concrete components for concrete houses refer to concrete members pre-cast in factories or construction sites using molds, covering core structural components such as beams, slabs, walls, and columns, such as prefabricated wall panels, floor slabs, and functional unit modules. Their production processes include the bench method, unit assembly line method, and assembly line conveyor method, with customizable dimensions through vertical and horizontal mold processes. During production, fiber reinforcement technology is often used to enhance crack resistance and impact resistance, and steel mesh is employed to increase tensile strength. Vibrators are used to eliminate air bubbles and ensure member density. For example, the construction of prefabricated concrete houses requires member casting to be completed in factories, with plastic sheds covered and heating applied to promote cement hydration reactions and accelerate strength formation.
II. Technical Advantages and Application Scenarios
The core advantages of prefabricated components lie in shortened construction periods (e.g., approximately two weeks for a two-story rough house), reduced on-site wet operations (lowering dust and noise pollution), and support for digital management (simulating construction through BIM technology and recording process information with RFID electronic tags). They are widely used in areas such as building facades, municipal roads and bridges, and prefabricated housing. Typical cases include Vanke Group's prefabricated shear wall housing system and the prestressed prefabricated concrete frame system of the Nanjing Jindi Yufang project, both achieving efficient construction through standardized components.
III. Market and Price Trends
According to market data, the market size of prefabricated concrete structures reached 1.1 trillion yuan in 2025, accounting for 65% of the prefabricated building market, indicating their dominant position. Chinese-made prefabricated houses are selling well overseas due to cost advantages. For example, in the first four months of 2026, the Guangzhou Customs district exported 1.4 billion yuan worth of mobile houses, a year-on-year increase of 38.1%. In terms of prices, significant differences exist among component types: steel-framed concrete lightweight floor slabs cost approximately 480 yuan per piece, and reinforced concrete prefabricated house modular structures cost about 450 yuan per piece, with overall cost-effectiveness continuously improving driven by large-scale production.
IV. Construction Process and Environmental Characteristics
The on-site assembly process for prefabricated components includes foundation laying (laying damp-proof membranes, filling with waste concrete, and installing guide steel plates), component lifting (fixing with bolts or connectors), and joint treatment. This model significantly reduces construction waste, and the components are recyclable, meeting green building standards. For example, the waste concrete filling foundation process for prefabricated concrete houses reduces costs and achieves resource recycling.
