The modular building has the advantages of environmental protection and energy-saving, and can significantly simplify the construction process and improve the structural performance of the building. Therefore, there is much application value in architectural engineering projects.
The advantage of the Modular Building
1. Save material
The modular building usually use to the outer and inner partition walls of the structure. The fixed formwork is processed by the factory and industrialized. Therefore, the outer and inner walls of the prefabricated structure have the characteristics of fixed formwork and mechanized concrete pouring. Compared with the problems of leaking grouts and the difficulty in controlling the amount of concrete that is very easy to occur in traditional construction, the application of this technology can not only increase the accuracy of prefabricated slabs but also reduce the waste of concrete. At the same time, processing in the factory can also save steel bars and reduce waste and material breakage. For example, in the conventional construction process, the amount of concrete per layer is 240m3, and the amount of reinforcing steel is 52.2t. After using the assembly technology, only 100m3 of concrete and 16.8t of steel required for each layer. Therefore, this technology dramatically saves materials and reduces costs. Besides, traditional cast-in-place technology requires a large amount of material to run, and each layer will increase the price. The assembly technology, because of less raw materials, reduces the number of transportation and turnover, which dramatically saves workforce and material resources, improves operating efficiency, and reduces costs.
2. Save water
The structure of the modular building completely processed in the factory, and it can directly transfer on-site. It does not need to process concrete on-site, which reduces the construction of water consumption. The mechanical parts of the assembly technology completed with circulating water curing at the factory. The strength before delivery leaves the factory to meet the design requirements. After the parts reach the site, no maintenance is required. Third, compared with conventional construction, assembly technology requires less labor and machinery, saving a certain amount of domestic water. According to statistics, compared to traditional construction, this technology can save 60% of water.
3. Reduce environmental pollution
The construction of prefabricated buildings reduces the amount of concrete poured on-site, and no on-site masonry and plastering are required. The method of on-site assembly significantly reduces construction waste; according to statistics, this technology generates about 5t less construction waste per 100m2 than conventional construction. The materials used in assembly technology are all environmentally friendly materials and green. Besides, the assembly construction technology reduces the deviation of the flatness of the concrete surface, improves the construction site environment, and reduces the impact on the surrounding environment.
4. Improve construction accuracy
Compared with the conventional concrete pouring technology, prefabricated construction controls the building error within 2mm, the efficiency improves by 3 to 4 times, and the drawing strength of the tile increase by about nine times. Besides, due to the integrated production of the wall, window frame, external wall tiles, and thermal insulation materials, the problems of window frame leakage and poor thermal insulation performance are also solved.
5. Save workforce
The production and assembling can save a lot of labor, reduce labor costs, improve production efficiency, ensure the construction period, and improve project benefits. According to statistics, for a project of the same scale, the conventional construction method requires 240 people to complete each building on each floor in 7 days, and the construction site where assembly technology is applied requires 70 workers on each level to finish in 5 days. A large number of construction workers no longer need to work in the open air, and they have turned into industrial workers in the factory.