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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Space-Averaged Constitutive Model for HPFRCCs with Multi-Directional Cracking
Author(s): Kohei Nagai, Benny Suryanto, and Koichi Maekawa
Publication: Materials Journal
Appears on pages(s): 139-149
Keywords: high-performance fiber-reinforced cementitious composite; multi-directional cracking; polyvinyl alcohol engineered cement composite; shear transfer; space-averaged model
Abstract:This paper focuses on the numerical modeling of high-performance fiber-reinforced cementitious composites (HPFRCCs), specifically polyvinyl alcohol engineered cement composites (PVA-ECCs) in the context of a space-averaged, fixed-crack approach. Compression, tension, and shear models are proposed. The compression and tension models include internal unloading and reloading paths. The shear model considers the shear stress transfer contributed by surface friction and fiber bridging in a phenomenological manner. The applicability of the models is verified against recent experiments on precracked PVA-ECC plates subjected to principal stress rotation, demonstrating that the proposed models replicate various responses of the plates. The degradation of initial stiffness and the overall strength of plates with precracks at different angles is represented well. Finally, this paper demonstrates the ability of the models to replicate the average strains spanning bidirectional multiple cracks occurring at the bottom surface of the precracked plates.
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