Post-Use of Cement Prefabricated Houses
The post-use situation of cement prefabricated houses is generally stable, but there are some issues that require attention and regular maintenance is necessary.
In terms of overall structure and durability, cement prefabricated houses exhibit good structural stability after three years of use, with strong durability and seismic resistance. From the perspective of materials and manufacturing processes, the lifespan of cement can reach 70 years. However, the lifespan of the house is influenced by various factors, and there is no uniform standard answer. Generally, the design standard meets 50 years, and houses can still be inhabited after exceeding the design lifespan upon inspection. This indicates that cement prefabricated houses have a relatively long lifespan under normal use and maintenance conditions.
Potential issues during use: During the rainy or hot seasons, minor problems such as leakage and dampness may occur inside the house. Prefabricated panels are placed directly on the walls in multiple pieces, providing no restraint to the brick walls. Over time, they may shift, causing cracks in the walls and relatively weaker seismic resistance compared to cast-in-place roofs. Additionally, centimeter-thick prefabricated panels have poor sound insulation, and the water leakage rate at the joints is nearly twice that of traditional buildings, requiring regular leak-proofing treatments. Although these issues do not seriously affect the overall structural safety of the house, they reduce living comfort and convenience.
Maintenance requirements: Cement prefabricated houses require regular maintenance and upkeep, including regular inspections and repairs, to ensure their lifespan and safety. If construction is not carried out in accordance with standards, there is a 7% probability of foundation settlement or wall cracks within five years. Construction in low-temperature environments is more prone to problems, and in some cases, maintenance costs after five years can account for a quarter of the original construction cost. Therefore, construction should strictly adhere to standards to ensure quality and reduce later maintenance costs. At the same time, during the use of the house, regular inspections of the structure, leakage, etc., should be conducted to promptly identify and address issues, thereby extending the lifespan of the house.
