Experimental Study of Clay Block Infill Frame Strengthening Using AR Glass Fibers Under In-Plane Loading

Authors

1 Department of Civil Engineering, Shahrood University of Technology, Shahrood, Iran

2 Faculty of Civil Engineering, Shahrood University of Technology

10.22034/ceej.2025.67265.2437

Abstract

In structural engineering, reinforced concrete frame systems filled with masonry walls are designated as "infilled frames". Studies have demonstrated that infills increase structural stiffness while reducing ductility. The interaction between masonry walls and the surrounding concrete frame fundamentally alters the behavioral characteristics of the system. This interaction can either enhance seismic performance or exacerbate damage; additionally, it also significantly modifies the effective stiffness and natural period of the structure. Field investigations following the Kermanshah earthquake (2017) revealed predominant in-plane failure mechanisms, including diagonal cracking, local crushing in force transfer regions, and sliding along mortar joint interfaces. The Iranian Seismic Code (Standard 2800) emphasizes the separation of infills from frames to prevent this interaction.

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Main Subjects

References

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Journal of Civil and Environmental Engineering
Volume 55, Issue 121 - Serial Number 121
Winter 2026
January 2026
Pages 39-51

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