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".
The work uses a lightweight mobile construction 3D printer, 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 concrete mix 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 the 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 is practically no different 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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