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Erschienen in:
Introduction to Engineered Cementitious Composites (ECC) Kapitel lesen Erstes Kapitel lesen

2019 | OriginalPaper | Buchkapitel

2. Micromechanics and Engineered Cementitious Composites (ECC) Design Basis

verfasst von : Victor C. Li

Erschienen in: Engineered Cementitious Composites (ECC)

Verlag: Springer Berlin Heidelberg

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Abstract

One of the unique features behind the high ductility of Engineered Cementitious Composites (ECC) is a design basis that is distinctly different from that of high strength concrete. For high strength concrete or members of this family of concrete materials, high compressive strength is reached by particle tight packing. The design basis of ECC, however, is based on synergizing the mechanical interactions between fiber, matrix, and interfaces of the composite so that multiple cracking in tension is attained. This design basis is embodied in a body of knowledge known as the micromechanics of ECC.
Micromechanics of ECC serves as a powerful foundation for design of ECC for various performance needs for different target applications. In this sense, micromechanics is an effective tool for efficient design of ECC with optimized mechanical, physical, and functional properties, avoiding costly trial and error approach that seems to pervade the study of fiber reinforced concrete.
This chapter describes the details of micromechanics of ECC, relating properties from the macro- to meso- to microscales. In so doing, the relevant phenomena, material features, and mechanisms at specific length scales are incorporated into the micromechanical model. Most of the parameters in the resulting micromechanical model can be physically measured and therefore support the selection and if needed the tailoring of the ingredients that make up the ECC.
As a physics-based rational model of material behavior, micromechanics often suggests insights into material design that may appear contradictory to conventional wisdoms. These include, for example, the deliberate weakening of fiber/matrix bond and the introduction of artificial flaws into the matrix. Extensive amount of experiments at different length scales have verified the appropriateness of these concepts. Such knowledge is included in this book chapter.

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Vorheriges Kapitel Introduction to Engineered Cementitious Composites (ECC)
Nächstes Kapitel Processing of Engineered Cementitious Composites (ECC)
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Metadaten
Titel
Micromechanics and Engineered Cementitious Composites (ECC) Design Basis
verfasst von
Victor C. Li
Copyright-Jahr
2019
Verlag
Springer Berlin Heidelberg
Buch
Engineered Cementitious Composites (ECC)

Print ISBN: 978-3-662-58437-8

Electronic ISBN: 978-3-662-58438-5

Copyright-Jahr: 2019

DOI
https://doi.org/10.1007/978-3-662-58438-5_2

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