Hybrid-fiber reinforced cement composites: modeling issues

Author(s): J. E. Bolander, S.R. Duddukuri, Z. Li
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: 113 - 118
Total Pages: 6
Language: English

Abstract: 
The potential benefits of hybrid-fiber reinforced cement composites (hybrid-FRCC) are evident in previous experimental work. The benefits include improved strength and toughness of the material, which can lead to thinner and lighter structural members, and improved durability performance. In materials composed of both macro- and microfibers, the different fiber types play fundamentally different roles. It is thought that microfibers improve tensile strength by restraining microcrack growth and coalescence; macrofibers improve material toughness by maintaining stress transfer mechanisms over larger crack openings. Conventional experimental techniques provide only a partial understanding of the individual and combined actions of each fiber type. Model-based simulation can be used to complement knowledge gained through experimentation.

This paper discusses some basic issues related to modeling hybrid FRCC. Approaches that explicitly represent the individual fibers in the composite are favored. Key benefits of such an approach are the abilities to directly account for fiber distribution effects and discriminate between the actions of each fiber type during fracture development.

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