Pingliang Prefabricated Concrete House

Pingliang prefabricated concrete houses, centered around prefabricated building technology, achieve efficient construction and low-carbon development through modular production, the application of new materials, and eco-friendly processes.

Technical Characteristics and Material Innovation

The technological breakthroughs in Pingliang's prefabricated concrete houses are primarily reflected in material research and production processes. Lightweight aggregate concrete is formed by calcining shale ceramsite or clay ceramsite at high temperatures to create a honeycomb-like porous structure. With a density lower than that of traditional concrete and a thermal conductivity reduced to 0.4-0.7 watts per meter-kelvin, it significantly reduces building heat loss. When applied to floor slabs and partition walls, it can reduce floor slab thickness by 10%, lower foundation loads, and simultaneously decrease cement usage by 15%-20%, saving 0.8 tons of carbon dioxide emissions per cubic meter. Foamed concrete, on the other hand, is created by mixing prefabricated foam with a cement-based slurry, resulting in a porous structure with a porosity of 40%-80% and a dry density of 300-1200 kilograms per cubic meter. It combines self-leveling properties with thermal insulation, making it suitable for integrated roof slope construction, integrating drainage, insulation, and lightweight filling functions, and simplifying composite processes.

Production Mode and Construction Efficiency

Local enterprises, represented by Gansu Tenglai New Material Co., Ltd., adopt a modular production approach, utilizing 3D printing technology to standardize the manufacturing of housing components. After being prefabricated in the factory, these components can be directly transported to the site for hoisting and assembly, shortening the construction period by more than 50% compared to traditional methods. For example, their third-generation cement prefabricated house product achieves a rapid delivery model of "hoisting and immediate occupancy," with a sales radius covering 500 kilometers. Additionally, modular production reduces the need for on-site vibration, and the self-leveling properties of foamed concrete further decrease mechanical dependence, resulting in an overall reduction in construction carbon emissions of approximately 40% compared to traditional methods.

Environmental Advantages and Low-Carbon Practices

The Pingliang prefabricated housing system reduces its carbon footprint through material innovation and process optimization. While lightweight aggregate concrete reduces cement usage, foamed concrete incorporates industrial waste such as fly ash as admixtures, further reducing resource consumption. During the construction phase, modular production and dry construction methods minimize dust and wastewater emissions, complying with green building standards. For instance, the application of foamed concrete roof slope layers avoids material waste and process repetition in traditional composite construction, promoting low-carbon development throughout the building's lifecycle.

Application Scenarios and Functional Expansion

Prefabricated concrete house technology has covered a wide range of scenarios, from non-load-bearing partition walls to entire house structures. Lightweight aggregate concrete is suitable for floor slabs and partition walls, enhancing space utilization; foamed concrete is widely used in roofs, floors, and other areas requiring thermal insulation and lightweight filling. Modular houses produced by 3D printing factories meet rapid delivery demands through pre-designed decoration plans, making them suitable for emergency housing, tourist homestays, and other scenarios, driving the integration of building industrialization and intelligence.