Numerical modelling of interfacial transition zone influence on elastic modulus of concrete-Reference-Cited by-同舟云学术

Numerical modelling of interfacial transition zone influence on elastic modulus of concrete

Published:2020-08 Issue:16 Volume:72 Page:811-819
ISSN:0024-9831
Container-title:Magazine of Concrete Research
language:en
Short-container-title:Magazine of Concrete Research

Author:

Sheng Peiyao¹,Chen Zengtao²,Cui Yi³,Zhang Jizhi⁴,Zhang Huan¹,Ji Zhong⁵

Affiliation:

1. Student, Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials, School of Materials Science and Engineering, Shandong University, Jinan, PR China

2. Professor, Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada

3. Researcher, Department of Mechanical Science & Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan

4. Researcher, Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials, School of Materials Science and Engineering, Shandong University, Jinan, PR China

5. Professor, Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials, School of Materials Science and Engineering, Shandong University, Jinan, PR China (corresponding author: )

Abstract

Concrete is a highly complex and heterogeneous three-phase composite composed of aggregates, matrix and the interfacial transition zone (ITZ) between them. As the weakest structure of concrete, the ITZ is often ignored due to difficulty in its modelling using the finite-element method. In this paper, concrete models with high-volume fractions of aggregates are established, in which the ITZ structure is considered. The numerical results for compressive elastic modulus are in good agreement with those obtained from experiments. The influence of the volume fraction, the size of aggregate and the thickness and compressive elastic modulus of ITZ on the compressive properties of concrete have been investigated. The numerical analyses show that the increase of the aggregate volume fraction, ITZ compressive elastic modulus, or the decrease of the ITZ thickness can all lead to the increase of the concrete compressive elastic modulus, while the aggregate size only has a mild effect on it.

Publisher

Thomas Telford Ltd.

Subject

General Materials Science,Building and Construction,Civil and Structural Engineering

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/jmacr.18.00564

Reference27 articles.

1. Effect of coarse aggregate size and matrix quality on ITZ and failure behavior of concrete under uniaxial compression

2. Assessing the ITZ microcracking via scanning electron microscope and its effect on the failure behavior of concrete

3. Quantitative comparison of real and CEMHYD3D model microstructures using correlation functions

4. Numerical study of ITZ contribution on mechanical behavior and diffusivity of mortars

5. µic: A new platform for modelling the hydration of cements

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