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Reinforced concrete, also called ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility.
The reinforcement in a RC structure, such as a steel bar, has to undergo the same strain or deformation as the surrounding concrete in order to prevent discontinuity, slip or separation of the two materials under load. Maintaining composite action requires transfer of load between the concrete and steel.
BS 4482: Steel wire for the reinforcement of concrete products. Specification (2005) BS 4483: Steel fabric for the reinforcement of concrete. Specification (2005) BS 6744: Stainless steel bars for the reinforcement of and use in concrete. Requirements and test methods. (2001/2009) DIN 488-1: Reinforcing steels - Part 1: Grades, properties ...
The concept of BRBs was developed in Japan by Nippon Steel at the end of the 1980s [2] and was known by its trademark name of Unbonded Brace. It was first installed in the United States in 1999, in the Plant & Environmental Sciences Building in U.C. Davis. [3]
The reinforcement is directed in the x, y and z direction. The reinforcement ratio is defined in a cross-section of a reinforcing bar as the reinforcement area A r {\displaystyle A_{r}} over the total area A {\displaystyle A} , which is the brittle material area plus the reinforcement area.
This is due to the fact that FRCM is placed on a substrate. In fact, it is necessary to take into account multiple failure mechanisms that can occur as a result of the interaction between support and reinforcement. Such mechanisms include: [16] the detachment with cohesive failure of the support from the reinforcement system;
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Concrete is poured around these plastic forms to create internal voids in the slab A voided biaxial slab installation in Turkey. Voided biaxial slabs, sometimes called biaxial slabs or voided slabs, are a type of reinforced concrete slab which incorporates air-filled voids to reduce the volume of concrete required.