Improving the Performance Characteristics of Floor Slabs in Large-Panel Housing Construction

Russian housing construction is characterized by high material consumption , due to the predominant use of heavy concrete in load-bearing structures and, first of all, floor slabs, including in large-panel housing construction. When designing, more massive (material-intensive) foundations are laid, since the loads on the foundations are still high. In order to reduce material consumption in large-panel housing construction, as well as improve energy efficiency, it is advisable to use the available scientific developments in the industry and, first of all, the use of layered floor slabs and coatings. The article presents data on research and testing of three-layer slabs on heavy concrete of class B15, which showed high reserves of strength, stiffness and crack resistance. The complex use of light concrete structures in the construction of large-panel residential buildings, including the use of high-strength light concretes, in combination with heavy concrete, significantly expand the possibilities of large-panel housing construction. Attention should be paid to the direction of reducing material consumption in products of large- panel housing construction. So practice making slabs at the Bryansk plant of large-panel housing construction in a horizontal position (conveyor lines) due to the unstable quality of Portland cement led to the transition to a traditional concrete class B15 in place of calculated B12.5. Numerous tests of floor slabs made the decision relevant to recalculate the reinforcement (concentration and sparsity of reinforcement as factors for reducing the material consumption of reinforced concrete slabs of residential buildings supported along the contour), which made it possible to save up to 10–12 % of reinforcement steel due to the rational placement of reinforcement.

E.F. FILATOV, Head of Building Laboratory (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.V. IVANKOV, Engineer-Builder-Technologist

SZ “Bryansk Stroitel’ny Trest”, OOO (1, bldg.11, Bezhitskaya Street, Bryansk, 214100, Russian Federation)

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