Numerical modeling of supercritical carbonation process in cement-based materials

Xiaoxiong Zha; Min Yu; Jianqiao Ye; Ganlin Feng

doi:10.1016/j.cemconres.2015.02.017

Numerical modeling of supercritical carbonation process in cement-based materials

Xiaoxiong Zha^*
, Min Yu
, Jianqiao Ye
, Ganlin Feng

^*Corresponding author for this work

Harbin Institute of Technology Shenzhen
Wuhan University
Lancaster University

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

91 Scopus citations

Abstract

In this paper, a mathematical model is developed to simulate the physical-chemical coupling process of supercritical carbonation in cement-based materials. This model takes into account the rate of chemical reaction, mass conservation for gas-liquid two phase flow, diffusion and dispersion of CO₂ in water, energy conservation for porous medium and the solubility of CO₂ in water. Numerical results are obtained and compared with experimental results. The degree of carbonation, temperature, gaseous pressure, moisture content and saturation of water within the material are predicted and presented. The influence of material saturation, temperature and pressure of supercritical CO₂ on carbonation depth is investigated through parametric studies. The comparisons with test results suggest that the coupled model can be used to predict carbonation process of cement-based materials under supercritical conditions.

Original language	English
Pages (from-to)	10-20
Number of pages	11
Journal	Cement and Concrete Research
Volume	72
DOIs	https://doi.org/10.1016/j.cemconres.2015.02.017
State	Published - 1 Jun 2015
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Carbonation (C)
Cement (D)
Concrete (F)
Modeling (E)
Reaction (A)

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10.1016/j.cemconres.2015.02.017

Cite this

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title = "Numerical modeling of supercritical carbonation process in cement-based materials",

abstract = "In this paper, a mathematical model is developed to simulate the physical-chemical coupling process of supercritical carbonation in cement-based materials. This model takes into account the rate of chemical reaction, mass conservation for gas-liquid two phase flow, diffusion and dispersion of CO2 in water, energy conservation for porous medium and the solubility of CO2 in water. Numerical results are obtained and compared with experimental results. The degree of carbonation, temperature, gaseous pressure, moisture content and saturation of water within the material are predicted and presented. The influence of material saturation, temperature and pressure of supercritical CO2 on carbonation depth is investigated through parametric studies. The comparisons with test results suggest that the coupled model can be used to predict carbonation process of cement-based materials under supercritical conditions.",

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author = "Xiaoxiong Zha and Min Yu and Jianqiao Ye and Ganlin Feng",

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doi = "10.1016/j.cemconres.2015.02.017",

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volume = "72",

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journal = "Cement and Concrete Research",

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T1 - Numerical modeling of supercritical carbonation process in cement-based materials

AU - Zha, Xiaoxiong

AU - Yu, Min

AU - Ye, Jianqiao

AU - Feng, Ganlin

PY - 2015/6/1

Y1 - 2015/6/1

N2 - In this paper, a mathematical model is developed to simulate the physical-chemical coupling process of supercritical carbonation in cement-based materials. This model takes into account the rate of chemical reaction, mass conservation for gas-liquid two phase flow, diffusion and dispersion of CO2 in water, energy conservation for porous medium and the solubility of CO2 in water. Numerical results are obtained and compared with experimental results. The degree of carbonation, temperature, gaseous pressure, moisture content and saturation of water within the material are predicted and presented. The influence of material saturation, temperature and pressure of supercritical CO2 on carbonation depth is investigated through parametric studies. The comparisons with test results suggest that the coupled model can be used to predict carbonation process of cement-based materials under supercritical conditions.

AB - In this paper, a mathematical model is developed to simulate the physical-chemical coupling process of supercritical carbonation in cement-based materials. This model takes into account the rate of chemical reaction, mass conservation for gas-liquid two phase flow, diffusion and dispersion of CO2 in water, energy conservation for porous medium and the solubility of CO2 in water. Numerical results are obtained and compared with experimental results. The degree of carbonation, temperature, gaseous pressure, moisture content and saturation of water within the material are predicted and presented. The influence of material saturation, temperature and pressure of supercritical CO2 on carbonation depth is investigated through parametric studies. The comparisons with test results suggest that the coupled model can be used to predict carbonation process of cement-based materials under supercritical conditions.

KW - Carbonation (C)

KW - Cement (D)

KW - Concrete (F)

KW - Modeling (E)

KW - Reaction (A)

UR - https://www.scopus.com/pages/publications/84929377709

U2 - 10.1016/j.cemconres.2015.02.017

DO - 10.1016/j.cemconres.2015.02.017

M3 - 文章

AN - SCOPUS:84929377709

SN - 0008-8846

VL - 72

SP - 10

EP - 20

JO - Cement and Concrete Research

JF - Cement and Concrete Research

ER -

Numerical modeling of supercritical carbonation process in cement-based materials

Abstract

UN SDGs

Keywords

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