Prefabricated Cement Slabs for Rural Houses
Prefabricated cement slabs for rural houses were once widely used due to their low cost and simple construction, but they have issues such as safety hazards, poor sound insulation, water leakage, and poor thermal insulation. Cast-in-place concrete roofs have gradually become a safer alternative.
Prefabricated cement slabs are constructed through factory prefabrication and on-site assembly. They require less steel reinforcement and labor costs, and significantly shorten the construction period. They were once widely used for roofs, floor partitions, or load-bearing slabs in rural houses. However, their structural flaws are significant: The assembly gaps result in poor integrity and low seismic performance, making them prone to collapse due to loose connections during earthquakes; The quality of the products varies greatly, and inferior slabs may suddenly break during use due to steel reinforcement corrosion or insufficient concrete strength, causing safety accidents.
Sound insulation and waterproofing performance are also concerning. Prefabricated cement slabs are usually only 10-12 centimeters thick and have long circular holes inside to reduce weight. This structure leads to strong sound penetration and even amplifies noise due to hole resonance, affecting living comfort. The assembly gaps are the main source of water leakage. During the rainy season, rainwater easily seeps in through the gaps, corroding the internal steel reinforcement and shortening the structural lifespan. Even if waterproof coatings are applied, due to the thermal expansion and contraction of the slabs, they may still crack and leak after long-term use.
Insufficient thermal insulation is another major drawback. The hollow structure of prefabricated cement slabs has poor heat insulation capacity. In summer, the indoor temperature is significantly higher than the outdoor temperature, and in winter, heat dissipates quickly. Additional thermal insulation layers (such as foam boards or tiles) are required to improve the situation, increasing long-term use costs. In addition, waterproofing is difficult, and even professional construction cannot guarantee complete water tightness, further increasing maintenance costs.
With the advancement of construction technology, cast-in-place concrete roofs have gradually become the mainstream alternative. By casting concrete on-site to form a seamless structure, their seismic resistance, integrity, and durability are significantly improved. Moreover, the thickness can be adjusted according to needs to optimize sound insulation and thermal insulation performance. Although the cost of cast-in-place construction is slightly higher and the construction period is longer, in the long run, its safety and comfort advantages better meet the construction needs of rural houses.
