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@article{36ec406b87c249af95d306d1c9080472,
title = "Elucidating the effect of accelerated carbonation on porosity and mechanical properties of hydrated Portland cement paste using X-ray tomography and advanced micromechanical testing",
abstract = "Carbonation of hydrated cement paste (HCP) causes numerous chemo-mechanical changes in the microstructure, e.g., porosity, strength, elastic modulus, and permeability, which have a significant influence on the durability of concrete structures. Due to its complexity, much is still not understood about the process of carbonation of HCP. The current study aims to reveal the changes in porosity and micromechanical properties caused by carbonation using micro-beam specimens with a cross-section of 500 μm x 500 μm. X-ray computed tomography and micro-beam bending tests were performed on both noncarbonated and carbonated HCP micro-beams for porosity characterization and micromechanical property measurements, respectively. The experimental results show that the carbonation decreases the total porosity and increases micromechanical properties of the HCP micro-beams under the accelerated carbonation. The correlation study revealed that both the flexural strength and elastic modulus increase linearly with decreasing porosity.",
keywords = "Carbonation, Hydrated cement paste, Micromechanical properties, Porosity",
author = "Hongzhi Zhang and Rodriguez, {Claudia Romero} and Hua Dong and Yidong Gan and Erik Schlangen and Branko {\v S}avija",
note = "This article belongs to the Special Issue Small Scale Deformation using Advanced Nanoindentation Techniques, Volume II",
year = "2020",
doi = "10.3390/MI11050471",
language = "English",
volume = "11",
journal = "Micromachines",
issn = "2072-666X",
publisher = "MDPI",
number = "5",

}

RIS

TY - JOUR

T1 - Elucidating the effect of accelerated carbonation on porosity and mechanical properties of hydrated Portland cement paste using X-ray tomography and advanced micromechanical testing

AU - Zhang, Hongzhi

AU - Rodriguez, Claudia Romero

AU - Dong, Hua

AU - Gan, Yidong

AU - Schlangen, Erik

AU - Šavija, Branko

N1 - This article belongs to the Special Issue Small Scale Deformation using Advanced Nanoindentation Techniques, Volume II

PY - 2020

Y1 - 2020

N2 - Carbonation of hydrated cement paste (HCP) causes numerous chemo-mechanical changes in the microstructure, e.g., porosity, strength, elastic modulus, and permeability, which have a significant influence on the durability of concrete structures. Due to its complexity, much is still not understood about the process of carbonation of HCP. The current study aims to reveal the changes in porosity and micromechanical properties caused by carbonation using micro-beam specimens with a cross-section of 500 μm x 500 μm. X-ray computed tomography and micro-beam bending tests were performed on both noncarbonated and carbonated HCP micro-beams for porosity characterization and micromechanical property measurements, respectively. The experimental results show that the carbonation decreases the total porosity and increases micromechanical properties of the HCP micro-beams under the accelerated carbonation. The correlation study revealed that both the flexural strength and elastic modulus increase linearly with decreasing porosity.

AB - Carbonation of hydrated cement paste (HCP) causes numerous chemo-mechanical changes in the microstructure, e.g., porosity, strength, elastic modulus, and permeability, which have a significant influence on the durability of concrete structures. Due to its complexity, much is still not understood about the process of carbonation of HCP. The current study aims to reveal the changes in porosity and micromechanical properties caused by carbonation using micro-beam specimens with a cross-section of 500 μm x 500 μm. X-ray computed tomography and micro-beam bending tests were performed on both noncarbonated and carbonated HCP micro-beams for porosity characterization and micromechanical property measurements, respectively. The experimental results show that the carbonation decreases the total porosity and increases micromechanical properties of the HCP micro-beams under the accelerated carbonation. The correlation study revealed that both the flexural strength and elastic modulus increase linearly with decreasing porosity.

KW - Carbonation

KW - Hydrated cement paste

KW - Micromechanical properties

KW - Porosity

UR - http://www.scopus.com/inward/record.url?scp=85085943989&partnerID=8YFLogxK

U2 - 10.3390/MI11050471

DO - 10.3390/MI11050471

M3 - Article

AN - SCOPUS:85085943989

VL - 11

JO - Micromachines

JF - Micromachines

SN - 2072-666X

IS - 5

M1 - 471

ER -

ID: 73698982