Dangers of Prefabricated Cement Houses
The dangers of prefabricated cement houses are mainly reflected in safety hazards, poor sound insulation, water leakage issues, quality risks, health hazards, and other problems.
Safety hazards: Prefabricated cement houses have significant safety deficiencies. Even minor earthquakes can cause the houses to collapse. The quality of prefabricated cement panels on the market varies greatly, with inferior products having a short lifespan and being prone to collapse accidents, resulting in casualties. The edges of the spliced prefabricated panels have gaps, leading to poor overall integrity and a significant safety gap compared to cast-in-place panels.
Poor sound insulation: The thickness of the prefabricated panels is insufficient, allowing sound to penetrate easily. Some houses are almost unable to provide sound insulation. The structure itself is prone to transmitting sound, and the long circular holes in the middle of the prefabricated panels serve as natural sound transmission devices. Noise from neighboring rooms can be amplified after passing through these holes, seriously affecting the quality of life of the occupants.
Water leakage issues: Prefabricated panels are composed of independent panels spliced together, with tiny gaps between them. Rainwater can easily seep through these gaps into the interior, corroding the steel reinforcement and thereby affecting the structural safety and lifespan of the house.
Quality risks: When construction is not standardized, prefabricated cement houses have a 7% probability of experiencing foundation settlement or wall cracks within 5 years, with problems being more likely to occur in low-temperature construction environments. Some cases show that repair costs after 5 years can account for a quarter of the original construction cost, imposing a heavy financial burden on homeowners.
Health hazards: If poor ventilation is caused by design or decoration, indoor humidity can easily accumulate. Long-term exposure to a high-humidity environment may increase the risk of respiratory infections, allergies, and asthma. Inhalation of cement dust generated during construction or renovation can irritate the respiratory tract, and long-term exposure to high concentrations of cement dust can damage lung health. In addition, high indoor humidity can also induce or exacerbate skin problems such as eczema and dermatitis, worsen joint discomfort, and even trigger skin allergic reactions.
Other problems: The water leakage rate at the joints of prefabricated cement houses is nearly twice that of traditional buildings, requiring regular waterproofing treatment. Design limitations currently restrict them to being built no more than two stories high. The exterior facades are prone to color differences, with 15% to 20% color variation possible after 5 years, requiring frequent maintenance.
