Zhangwan District Cement Prefabricated Houses
Currently, no specific information directly targeting 'Zhangwan District cement prefabricated houses' has been found, but cement prefabricated houses have the following characteristics:
Production and Structure: Cement prefabricated houses are cast in one piece in specialized production bases using high-precision molds for core components such as walls, floors, beams, and columns. Each module integrates multiple structures including steel reinforcement skeletons, insulation layers, waterproof layers, and pre-embedded pipelines. They use C30 - C40 grade concrete with built-in Φ8 - Φ12 steel reinforcement mesh, achieving a compressive strength of 25 - 30MPa, which is 1.5 times that of traditional brick-and-mortar structures, indicating relatively high structural strength.
Connection Method: Modules are connected to form an overall framework through prestressed bolts + welded steel plates, achieving a wind resistance rating of Level 10 and a seismic fortification intensity of 7 degrees (equivalent to the destructive force of the Wenchuan earthquake). However, the design of module joints is crucial. Compared to cast-in-place houses, their seismic performance is slightly inferior. They can meet requirements in non-seismic zones but should not be built too high, as it would be difficult to meet seismic design requirements for building structures.
Construction Speed: Construction efficiency is extremely high. A single 30㎡ module can be prefabricated in the factory in just 7 days. After being transported to the site, three workers, with the assistance of a crane, can complete the installation of a single module in 4 hours. The overall construction of a 100㎡ house takes only 2 days. Some manufacturers claim that constructing a cement 'prefabricated house' of about 200 square meters takes only 4 hours.
Cost: Taking a 120㎡ self-built rural house as an example, the cost of a traditional brick-and-mortar structure is approximately 180,000 - 220,000 yuan (including labor), while the cost of the main module of a cement house is only 120,000 - 150,000 yuan. Including interior and exterior decoration, the total cost can be controlled within 200,000 yuan, representing a 30% reduction in overall cost. If a leasing model is chosen, the annual rent can be as low as 5,000 yuan per room. Some manufacturers charge 300 yuan per square meter for constructing a cement 'prefabricated house' of about 200 square meters, totaling approximately 60,000 yuan.
Performance: They possess multiple excellent properties including earthquake and compression resistance, fire and flame retardance, thermal insulation and energy efficiency, wind and moisture resistance, and corrosion and weathering resistance. The designed service life of the house is over 70 years, making it durable. Maintenance is simple, and it supports overall relocation and secondary disassembly and reuse, significantly saving investment costs through recycling.
Application Scenarios: They can be used to build office buildings, small hotels, staff dormitories, canteens and restaurants, private garages, factory gatehouses, storage warehouses, etc. They are widely applicable to various scenarios such as rural dilapidated house renovation, rural self-built housing, farm supporting housing, temporary office and accommodation housing on construction sites, and temporary supporting housing for engineering projects.
