Scientists at Perm Polytechnic University propose using a new construction technology in permanent formwork made using additive technologies for the construction of multi-story monolithic houses. A study based on the example of a 25-story residential building was carried out as part of the strategic academic leadership program "Priority 2030".
A lightweight mobile construction 3D printer is used for the work, which is installed on a mobile platform with remote control and moves on its own caterpillar track. Starting from a specific point, layer-by-layer printing of several formwork elements is carried out, which, after hardening, are filled with a concrete mixture using a tower crane. The basis of printing is heavy fine-grained concrete on a cement basis. It includes fine aggregate, mineral additives, steel microfibers, anti-shrinkage chemical additives and setting time regulators.
We compared the duration and cost of erecting a building frame using traditional and proposed technologies. For the calculation, we drew up work schedules and took into account the market value of renting and purchasing a set of formwork and a printer, paying workers' wages, and general material costs. The cost of construction using a 3D printer practically does not differ from traditional technology, even taking into account its purchase. However, its use allows you to speed up the completion of work by 10%.
The university noted that the technology for the construction of a monolithic building frame presented by PNRPU scientists and the designed work schemes with a 3D printer have significant potential for practical application in the construction industry.
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