State-of-the-Art Report on Confined Concrete

Abstract

The strength and ductility of concrete are increased by the lateral pressure developed by transverse reinforcements. The concrete under such a condition is referred to as confined concrete. The augumentation of strength and ductility of concrete brings an enhancement of ultimate moment and rotational capacities of plastic hinges developed in reinforced concrete columns and beams, which results in improvement of energy absorption capacity of reinforced concrete structures. A review of investigations on the confined concrete is described in this paper. The emphasis will be placed on the quantitative evaluation of the strength and deformation capacity of the confined concrete.