Compression yielding (CY), an innovative structural concept, has recently been introduced to offset the ductility deficiency of concrete structures reinforced with fiber-reinforced polymer (FRP). The CY structural scheme employs a ductile material or a mechanism to replace concrete in the compression zone of a plastic hinge, thus allowing ductile flexural deformation of CY members to be achieved through the compressive, rather than tensile, yielding of a member. Experimental study has demonstrated that the extremely high ductility demand of the CY material can be satisfied by providing perforations inside a slurry infiltrated fiber concrete (SIFCON) block. This paper reports the analytical work that has been conducted to study the perforation effect on the strength and ductility of SIFCON blocks. Furthermore, a methodology has been proposed for the design of the perforated SIFCON block to achieve a given strength and ductility requirement.
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