An analysis of chemical-mechanical damage in reinforced concrete beam

Hamidun Mohd Noh, Yoshimi Sonoda, Hiroki Tamai, Isao Kuwahara

Research output: Contribution to journalArticle

Abstract

Nowadays, a major issue in the field of construction is the deterioration of reinforced concrete structures due to chemical and mechanical attacks. This deterioration directly impacts construction safety and serviceability, as well as the cost of maintenance. For the purpose of maintaining safety and serviceability, it is necessary to evaluate the durability of existing structures accurately, in order to predict the structure's deterioration and its future strength. In this study, an experiment was conducted in which the electrolytic process was carried out for several levels of corrosion. Next, a static loading test was adopted to assess the structural performance and obtain the ultimate strength of the beam. In addition, continuum damage mechanics were utilized in the analysis of damage caused by chemical and mechanical effects. Within the framework of this method, chemical damage caused by the corrosion of steel bars was considered. Then the coupling effects of chemical and mechanical damage were calculated by introducing two independent scalar damage variables into the constitutive equation. To calculate the chemical damage evolution, we carried out a diffusion process of chloride ions that impact the corrosion of steel bars in concrete, and an evaluation was conducted on an affected cross-sectional area of a steel bar. The proposed method was found to validate the experiment's results and could predict the ultimate strength under various exposure conditions. Moreover, the proposed orthotropic conditions may be carried out as an alternative to isotropic analysis in order to identify the worst-case scenario of the structure.

Original languageEnglish
Pages (from-to)156-164
Number of pages9
JournalInternational Journal of Integrated Engineering
Volume10
Issue number4
Publication statusPublished - Jan 1 2018

Fingerprint

Reinforced concrete
Steel
Deterioration
Corrosion
Continuum damage mechanics
Constitutive equations
Concrete construction
Chlorides
Durability
Experiments
Concretes
Ions
Costs

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Materials Science (miscellaneous)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

An analysis of chemical-mechanical damage in reinforced concrete beam. / Noh, Hamidun Mohd; Sonoda, Yoshimi; Tamai, Hiroki; Kuwahara, Isao.

In: International Journal of Integrated Engineering, Vol. 10, No. 4, 01.01.2018, p. 156-164.

Research output: Contribution to journalArticle

@article{07815092967d43618ff4c82b1e348c5f,
title = "An analysis of chemical-mechanical damage in reinforced concrete beam",
abstract = "Nowadays, a major issue in the field of construction is the deterioration of reinforced concrete structures due to chemical and mechanical attacks. This deterioration directly impacts construction safety and serviceability, as well as the cost of maintenance. For the purpose of maintaining safety and serviceability, it is necessary to evaluate the durability of existing structures accurately, in order to predict the structure's deterioration and its future strength. In this study, an experiment was conducted in which the electrolytic process was carried out for several levels of corrosion. Next, a static loading test was adopted to assess the structural performance and obtain the ultimate strength of the beam. In addition, continuum damage mechanics were utilized in the analysis of damage caused by chemical and mechanical effects. Within the framework of this method, chemical damage caused by the corrosion of steel bars was considered. Then the coupling effects of chemical and mechanical damage were calculated by introducing two independent scalar damage variables into the constitutive equation. To calculate the chemical damage evolution, we carried out a diffusion process of chloride ions that impact the corrosion of steel bars in concrete, and an evaluation was conducted on an affected cross-sectional area of a steel bar. The proposed method was found to validate the experiment's results and could predict the ultimate strength under various exposure conditions. Moreover, the proposed orthotropic conditions may be carried out as an alternative to isotropic analysis in order to identify the worst-case scenario of the structure.",
author = "Noh, {Hamidun Mohd} and Yoshimi Sonoda and Hiroki Tamai and Isao Kuwahara",
year = "2018",
month = "1",
day = "1",
language = "English",
volume = "10",
pages = "156--164",
journal = "International Journal of Integrated Engineering",
issn = "2229-838X",
publisher = "Penerbit UTHM",
number = "4",

}

TY - JOUR

T1 - An analysis of chemical-mechanical damage in reinforced concrete beam

AU - Noh, Hamidun Mohd

AU - Sonoda, Yoshimi

AU - Tamai, Hiroki

AU - Kuwahara, Isao

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Nowadays, a major issue in the field of construction is the deterioration of reinforced concrete structures due to chemical and mechanical attacks. This deterioration directly impacts construction safety and serviceability, as well as the cost of maintenance. For the purpose of maintaining safety and serviceability, it is necessary to evaluate the durability of existing structures accurately, in order to predict the structure's deterioration and its future strength. In this study, an experiment was conducted in which the electrolytic process was carried out for several levels of corrosion. Next, a static loading test was adopted to assess the structural performance and obtain the ultimate strength of the beam. In addition, continuum damage mechanics were utilized in the analysis of damage caused by chemical and mechanical effects. Within the framework of this method, chemical damage caused by the corrosion of steel bars was considered. Then the coupling effects of chemical and mechanical damage were calculated by introducing two independent scalar damage variables into the constitutive equation. To calculate the chemical damage evolution, we carried out a diffusion process of chloride ions that impact the corrosion of steel bars in concrete, and an evaluation was conducted on an affected cross-sectional area of a steel bar. The proposed method was found to validate the experiment's results and could predict the ultimate strength under various exposure conditions. Moreover, the proposed orthotropic conditions may be carried out as an alternative to isotropic analysis in order to identify the worst-case scenario of the structure.

AB - Nowadays, a major issue in the field of construction is the deterioration of reinforced concrete structures due to chemical and mechanical attacks. This deterioration directly impacts construction safety and serviceability, as well as the cost of maintenance. For the purpose of maintaining safety and serviceability, it is necessary to evaluate the durability of existing structures accurately, in order to predict the structure's deterioration and its future strength. In this study, an experiment was conducted in which the electrolytic process was carried out for several levels of corrosion. Next, a static loading test was adopted to assess the structural performance and obtain the ultimate strength of the beam. In addition, continuum damage mechanics were utilized in the analysis of damage caused by chemical and mechanical effects. Within the framework of this method, chemical damage caused by the corrosion of steel bars was considered. Then the coupling effects of chemical and mechanical damage were calculated by introducing two independent scalar damage variables into the constitutive equation. To calculate the chemical damage evolution, we carried out a diffusion process of chloride ions that impact the corrosion of steel bars in concrete, and an evaluation was conducted on an affected cross-sectional area of a steel bar. The proposed method was found to validate the experiment's results and could predict the ultimate strength under various exposure conditions. Moreover, the proposed orthotropic conditions may be carried out as an alternative to isotropic analysis in order to identify the worst-case scenario of the structure.

UR - http://www.scopus.com/inward/record.url?scp=85057199328&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85057199328&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85057199328

VL - 10

SP - 156

EP - 164

JO - International Journal of Integrated Engineering

JF - International Journal of Integrated Engineering

SN - 2229-838X

IS - 4

ER -