THE SUGGESTIONS AS TO THE CALCULATION BEARING CAPACITY OF SANDWICH REINFORCED CONCRETE — FOAMED CONCRETE FLOOR SLABS

Abstract

This article presents the results of an experimental research of sandwich reinforced concrete-foamed concrete floor slabs. These floor slabs combine three different materials — normal concrete, foamed concrete and a steel reinforcement. As experimental models six beams with dimensions L × b × h = 4200 × 500 × 200mm were made. Experimental beams were established on two supports (hinged fixed support and hinged movable support). The experimental study of these beams was executed by two concentrated forces in thirds of beam’s span. Received results allowed to describe a behaviour of sandwich reinforced concrete-foamed concrete floor slabs under loading. Moreover, these researches allowed to present suggestions regarding calculations of bearing capacity of sandwich reinforced concrete-foamed concrete floor slabs. These suggestions will give an opportunity to use sandwich reinforced concrete-foamed concrete floor slabs in civil engineering and house building.

Keywords

• sandwich reinforced concrete - foamed concrete floor slab, non autoclaved foamed concrete, calculation by limiting states, reinforced-concrete, fiber polypropylene