Interior Walls of Prefabricated Panel Houses

Interior walls of prefabricated panel houses have material and structural characteristics, but they also suffer from issues such as poor thermal insulation, insufficient structural stability, weak load-bearing capacity, and susceptibility to cracking and leakage. Moreover, cement prefabricated panel walls are now prohibited from use, with only some prefabricated concrete wall panels still being applied.

From a material and structural perspective, early cement prefabricated panel walls were primarily made of Portland cement and steel reinforcement bars, pre-formed into panel shapes using molds, with both solid and hollow types available. The design of hollow prefabricated panels could reduce weight and cost, making them relatively common in construction at the time.

However, interior walls of prefabricated panel houses have numerous problems. Poor thermal insulation is one of their significant drawbacks. The thermal insulation performance of prefabricated panel buildings is inadequate. In winter, indoor heat easily dissipates, resulting in lower indoor temperatures and a feeling of coldness for occupants. In summer, outdoor heat readily enters the interior, raising indoor temperatures and leading to a situation of being cold in winter and hot in summer. This problem becomes even more pronounced during extreme weather conditions.

Insufficient structural stability is also a crucial issue. Prefabricated panel houses are assembled from individual prefabricated panels, inherently lacking in robustness and toughness. The hollow design and the less scientific and reasonable quantity and distribution of steel reinforcement bars compared to cast-in-place houses result in low structural strength and poor earthquake resistance. Even slight vibrations can cause loosening at the joints of the floor panels. Over time, problems such as wall cracks gradually increase, and many older prefabricated panel houses have even been classified as "dangerous buildings."

Weak load-bearing capacity is also not negligible. The load-bearing capacity of prefabricated panel floors is limited. During the renovation process, unreasonable modifications such as removing walls or stacking heavy items on the floors can easily lead to safety hazards, threatening the lives and property of occupants.

Susceptibility to cracking and leakage is also a common problem. Gaps between panels can easily lead to cracking and leakage, with frequent occurrences of wall cracks and ceiling water seepage. This issue particularly affects top-floor residents, not only impacting living comfort but also potentially causing further damage to the building's structure.

Due to the aforementioned problems, cement prefabricated panel walls are now prohibited from use in the construction field, with cast-in-place panels generally replacing prefabricated panel walls in current construction. However, as one of the prefabricated building components, prefabricated concrete wall panels are still applied in some projects.