Hunan Yiyang Cement Prefabricated Houses
Hunan Yiyang has established a mature model in the field of cement prefabricated houses (prefabricated buildings), integrating policy guidance, technological innovation, project practice, and environmental supervision, becoming a regional benchmark for green buildings.
1. Policy-Driven and Industrial Scale Development
Yiyang City has incorporated prefabricated buildings into its top ten industrial chains and modern industrial system, implementing a doubling plan. In 2024, the city issued the "Three-Year Action Plan for Enhancing the Development of Prefabricated Buildings in Yiyang City (2024-2026)", aiming to establish eight innovative systems, including policies, management, and building materials, by 2026. Data shows that the proportion of newly started prefabricated building area in the city reached 45.34% in 2024, rising to 55.87% in 2025, with a year-on-year increase in output value of 215%, indicating rapid industrial expansion.
2. Corporate Innovation and Technological Breakthroughs
- Hunan Linya Building Materials Technology Co., Ltd.: By producing autoclaved aerated concrete blocks and prefabricated components, it has obtained the "China Green Building Materials Product Certification Certificate." Its Lingge Huixiong project adopts a fully prefabricated partially clad steel-concrete composite structure, reducing construction time by 30%-50% and construction waste by 80%-90%, achieving dust-free and low-noise construction.
- Hunan Chengyou Green Building Technology Co., Ltd.: Utilizes BIM technology for millimeter-level precision design of components, combined with "one-piece-one-code" full-process control to ensure traceable quality. The assembly of the main structure of a 120-square-meter house takes only 3-5 days, significantly improving efficiency compared to traditional methods.
3. Project Practice and Efficiency Advantages
The Xianfengling Resettlement Area project in Huilongshan Street, Heshan District, demonstrated that a building can be erected from foundation slab lifting to third-floor completion in just 7 days, compared to over 8 months using traditional methods. Prefabricated buildings reduce labor by over 50% through factory production and parallel on-site operations, with high mechanization and minimal weather impact, significantly shortening construction time and reducing costs.
4. Environmental Protection and Sustainability
Prefabricated buildings reduce on-site wet operations, saving 60% water and 20% energy, with recyclable components meeting ultra-low energy consumption standards. For example, the Lingge Huixiong project achieves full-process green construction through integrated design and intelligent building technologies, promoting the building industry's transition to low carbon.
5. Strengthened Supervision and Illegal Rectification
Yiyang City has conducted joint law enforcement against illegal prefabricated component factories, such as addressing a factory in Oujiangcha Town, Heshan District, for illegally occupying forest land, ordering rectification and equipment removal, and supervising the cleanup of construction waste and reforestation to maintain a healthy industrial ecosystem.
