State-of-the-Art Review on Seismic-Resisting Structures Incorporating Ultra-High Toughness Cementitious Composites

Abstract

Over the past decade, ultra-high toughness cementitious composites (UHTCCs) have been extensively investigated due to their superior tensile properties and deformation capacity. The incorporation of UHTCC into engineering structures can significantly enhance their seismic performance. This paper presents a state-of-the-art review of the application of UHTCC in seismic-resisting structures, encompassing composite structures formed with reinforced concrete or steel, as well as applications in the strengthening and repairing of newly constructed or existing structures. The review first introduces the application of UHTCC in flexure-dominated members, such as beams and columns, and their contribution to enhancing structural seismic performance. Subsequently, it discusses the effectiveness of UHTCC in shear-dominated members, including coupling beams, short columns, and shear walls. Following the analysis at the member level, the paper further explores the seismic performance of joints formed by connecting different members, including beam–column, slab–column, column–column, and wall–beam joints. Furthermore, the application of UHTCC in global structural systems is analyzed, covering the behavior of frame structures and coupled shear wall structures under both static and dynamic seismic loading. Meanwhile, the use of UHTCC for the strengthening and repairing of masonry wall-related and reinforced concrete structures is also presented. Finally, this paper proposes potential future research directions for UHTCC in seismic-resisting structures, providing a comprehensive reference for the further development of this field.

Keywords

repair / R/UHTCC structures / seismic-resisting structures / strengthening / structural application / ultra-high toughness cementitious composites

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