Numerical and statistical analysis of elastic modulus of concrete as a three-phase heterogeneous composite

Chunsheng Zhou; Kefei Li; Fu Ma

doi:10.1016/j.compstruc.2014.04.007

Numerical and statistical analysis of elastic modulus of concrete as a three-phase heterogeneous composite

Chunsheng Zhou^*
, Kefei Li
, Fu Ma

^*Corresponding author for this work

School of Civil Engineering, Harbin Institute of Technology
Tsinghua University

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

This paper investigates the elastic modulus of concrete as a three-phase heterogeneous composite. Theoretically, the influence of aggregate and interfacial transition zone (ITZ) can be well characterized by the Ramesh model. Through generation of random aggregate structure, numerical samples of concrete are established and analyzed to calculate elastic modulus. It is shown that soft ITZ can greatly cancel the enhancement of aggregate while stiff ITZ cannot help much to strengthen concrete. The size of representative volume element of concrete is suggested in terms of expected error employing numerical-statistical approach. The required sample size with certain realization number is also calculated.

Original language	English
Pages (from-to)	33-42
Number of pages	10
Journal	Computers and Structures
Volume	139
DOIs	https://doi.org/10.1016/j.compstruc.2014.04.007
State	Published - 15 Jul 2014
Externally published	Yes

Keywords

Concrete
Elastic modulus
Finite element analysis (FEA)
Interfacial transition zone (ITZ)
Representative volume element (RVE)

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10.1016/j.compstruc.2014.04.007

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title = "Numerical and statistical analysis of elastic modulus of concrete as a three-phase heterogeneous composite",

abstract = "This paper investigates the elastic modulus of concrete as a three-phase heterogeneous composite. Theoretically, the influence of aggregate and interfacial transition zone (ITZ) can be well characterized by the Ramesh model. Through generation of random aggregate structure, numerical samples of concrete are established and analyzed to calculate elastic modulus. It is shown that soft ITZ can greatly cancel the enhancement of aggregate while stiff ITZ cannot help much to strengthen concrete. The size of representative volume element of concrete is suggested in terms of expected error employing numerical-statistical approach. The required sample size with certain realization number is also calculated.",

keywords = "Concrete, Elastic modulus, Finite element analysis (FEA), Interfacial transition zone (ITZ), Representative volume element (RVE)",

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doi = "10.1016/j.compstruc.2014.04.007",

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T1 - Numerical and statistical analysis of elastic modulus of concrete as a three-phase heterogeneous composite

AU - Zhou, Chunsheng

AU - Li, Kefei

AU - Ma, Fu

PY - 2014/7/15

Y1 - 2014/7/15

N2 - This paper investigates the elastic modulus of concrete as a three-phase heterogeneous composite. Theoretically, the influence of aggregate and interfacial transition zone (ITZ) can be well characterized by the Ramesh model. Through generation of random aggregate structure, numerical samples of concrete are established and analyzed to calculate elastic modulus. It is shown that soft ITZ can greatly cancel the enhancement of aggregate while stiff ITZ cannot help much to strengthen concrete. The size of representative volume element of concrete is suggested in terms of expected error employing numerical-statistical approach. The required sample size with certain realization number is also calculated.

AB - This paper investigates the elastic modulus of concrete as a three-phase heterogeneous composite. Theoretically, the influence of aggregate and interfacial transition zone (ITZ) can be well characterized by the Ramesh model. Through generation of random aggregate structure, numerical samples of concrete are established and analyzed to calculate elastic modulus. It is shown that soft ITZ can greatly cancel the enhancement of aggregate while stiff ITZ cannot help much to strengthen concrete. The size of representative volume element of concrete is suggested in terms of expected error employing numerical-statistical approach. The required sample size with certain realization number is also calculated.

KW - Concrete

KW - Elastic modulus

KW - Finite element analysis (FEA)

KW - Interfacial transition zone (ITZ)

KW - Representative volume element (RVE)

UR - https://www.scopus.com/pages/publications/84900448728

U2 - 10.1016/j.compstruc.2014.04.007

DO - 10.1016/j.compstruc.2014.04.007

M3 - 文章

AN - SCOPUS:84900448728

SN - 0045-7949

VL - 139

SP - 33

EP - 42

JO - Computers and Structures

JF - Computers and Structures

ER -

Numerical and statistical analysis of elastic modulus of concrete as a three-phase heterogeneous composite

Abstract

Keywords

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