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Cost Analysis of Prefabricated Elements of the Ordinary and Lightweight Concrete Walls in Residential Construction

机译：住宅建筑中普通轻质混凝土墙预制构件的成本分析

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Global economic growth causes an increase in natural resources exploitation, particularly in construction branch. The growing use of electricity contributes to climate change. Therefore, it is necessary to search the solutions, which will allow for reducing natural resources exploitation. One of the many opportunities to do that is the application of the recycled materials. The authors of the given article have analyzed three variants of construction solutions. One of them was the production of the walls of a building from reinforced concrete prefabricates with styrofoam insulation layer. The second variant for analysis were prefabricated walls from lightweight concrete, made of sintered clay aggregate with a foam core. The third proposed variant was a system of multi-layered walls, which was made of lightweight concrete with granulated expanded glass aggregate (GEGA). The main objective of the research was to assess the use of lightweight GEGA prefabricates, focusing on economic and technological aspects of the solution. The authors have analyzed the entire construction costs; ceilings and stairs were assumed as reinforced concrete elements. In calculations, the weight of the elements was taken into account, as well as transportation and mounting costs. On the basis of this cost analysis, it was concluded that the use of prefabricated element, made of lightweight concrete with GEGA, could be a replacement for the solutions, widely applied until these days. The analysis has also shown that the use of prefabricates with GEGA is sensible from the economic viewpoint, as it allows for saving construction time. Moreover, the solutions, proposed here, allow for saving natural resources and assuming a more environmentally friendly and caring attitude.
机译：全球经济增长导致自然资源开发，特别是建筑部门的开发增加。用电的日益增长助长了气候变化。因此，有必要寻找解决方案，这将减少自然资源的开发。这样做的众多机会之一就是应用再生材料。给定文章的作者分析了构造解决方案的三种变体。其中之一是用带有泡沫聚苯乙烯隔热层的钢筋混凝土预制件生产建筑物的墙壁。用于分析的第二种方法是用轻质混凝土制成的预制墙，这种墙是由烧结的骨料和泡沫芯制成的。提出的第三个变体是多层墙系统，该系统由轻质混凝土和粒状膨胀玻璃骨料（GEGA）制成。研究的主要目的是评估轻型GEGA预制件的使用，重点是解决方案的经济和技术方面。作者分析了全部建设成本。天花板和楼梯被假定为钢筋混凝土元素。在计算中，考虑了元件的重量以及运输和安装成本。根据此成本分析，得出的结论是，使用由GEGA制成的轻质混凝土制成的预制构件可以替代目前为止广泛使用的解决方案。分析还表明，从经济角度考虑，将GEGA与预制件配合使用是明智的，因为这样可以节省施工时间。此外，此处提出的解决方案可以节省自然资源，并采取更加环保和关怀的态度。

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