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Three dimensional plasticity model for high performance fiber reinforced cement composites

Author(s): K. Sirijaroonchai, S. El-Tawil
Paper category: Workshop
Book title: Fifth International RILEM Workshop on High Performance Fiber Reinforced Cement Composites (HPFRCC5)
Editor(s): H.W. Reinhardt, A.E. Naaman
ISBN: 978-2-35158-046-2
Pages: 231 - 240
Total Pages: 10
Language: English

Many researchers have proposed in the past micro-mechanical models to describe the behavior of high performance fiber reinforced cementitious composites (HPFRCC). The goal of the majority of these models is to reproduce macro-scale constitutive properties, such as stress versus strain relationships, as a function of the properties of the fiber, matrix and the interaction between fibers and matrix. Although such models can accurately represent behavior under a variety of conditions, they are computationally expensive and cannot be conveniently used to simulate the overall response of structures constructed with HPFRCC. A 3-D model that can directly represent HPFRCC behavior at the macro-scale level is proposed in this paper. The model is rooted in fundamental plasticity theory and, since it requires modest computational resources, can be used in large-scale computational structural simulations. Although the proposed model is versatile enough to represent HPFRCC with any type of fiber, it is calibrated for two types of commercially available fibers, namely hooked and Spectra fibers, with volume fractions ranging from 1% to 2%. The model produces results that match experimental results well. The model formulation and validation exercises are presented.

Online publication: 2014
Publication Type: full_text
Public price (Euros): 0.00

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