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CIB Conferences

Abstract

Reinforced concrete is the most commonly used structural material in construction today. To fabricate reinforced concrete components and structures, formwork made of wood or metal is often used temporarily to shape and secure the fresh concrete, and it is removed once the concrete hardens. The installation and removal of temporary formwork generate a large amount of solid waste at the construction site and consume significant resources in terms of labor costs and construction time. Prefabricated and semi-prefabricated reinforced concrete structures are effective alternatives to minimize construction waste, shorten construction time, and reduce installation costs. This paper introduces a new semi-prefabricated reinforced concrete slab solution: the reinforced concrete – ultra-high performance concrete panel with an expanded polystyrene lightweight concrete core. For this type of composite slab panel, the bottom layer is ultra-high-performance concrete (UHPC) with a steel mesh frame acting as formwork during the construction of the slab, the core is made of expanded polystyrene (EPS) to reduce the self-weight of the structure, and the top layer is conventional concrete constructed in situ. Through finite element analysis of the panel under construction conditions, several panel configurations are proposed as practical solutions for the semi-precast slab panels.

Keywords

semi precast composite slab, RC UHPC panel, finite element analysis

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