Influence of Micro-Pore Connectivity and Micro-Fractures on Calcium Leaching of Cement Pastes—A Coupled Simulation Approach

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Influence of Micro-Pore Connectivity and Micro-Fractures on Calcium Leaching of Cement Pastes—A Coupled Simulation Approach. / Perko, Janez; Ukrainczyk, Neven; Savija, Branko; Phung, Quoc Tri; Koenders, Eddie A.B.

In: Materials, Vol. 13, No. 12, 2697, 13.06.2020, p. 1-21.

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Perko, Janez ; Ukrainczyk, Neven ; Savija, Branko ; Phung, Quoc Tri ; Koenders, Eddie A.B. / Influence of Micro-Pore Connectivity and Micro-Fractures on Calcium Leaching of Cement Pastes—A Coupled Simulation Approach. In: Materials. 2020 ; Vol. 13, No. 12. pp. 1-21.

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@article{fed0bd90665944b79dfab80a4ed58d41,
title = "Influence of Micro-Pore Connectivity and Micro-Fractures on Calcium Leaching of Cement Pastes—A Coupled Simulation Approach",
abstract = "A coupled numerical approach is used to evaluate the influence of pore connectivity and microcracks on leaching kinetics in fully saturated cement paste. The unique advantage of the numerical model is the ability to construct and evaluate a material with controlled properties, which is very difficult under experimental conditions. Our analysis is based on two virtual microstructures, which are different in terms of pore connectivity but the same in terms of porosity and the amount of solid phases. Numerical fracturing was performed on these microstructures. The non-fractured and fractured microstructures were both subjected to chemical leaching. Results show that despite very different material physical properties, for example, pore connectivity and effective diffusivity, the leaching kinetics remain the same as long as the amount of soluble phases, i.e., buffering capacity, is the same. The leaching kinetics also remains the same in the presence of microcracks.",
keywords = "Numerical models, Pore scale, Cement leaching, Pore connectivity, Effective diffusivity",
author = "Janez Perko and Neven Ukrainczyk and Branko Savija and Phung, {Quoc Tri} and Koenders, {Eddie A.B.}",
note = "Score=10",
year = "2020",
month = "6",
day = "13",
doi = "10.3390/ma13122697",
language = "English",
volume = "13",
pages = "1--21",
journal = "Materials",
issn = "1996-1944",
publisher = "MDPI",
number = "12",

}

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TY - JOUR

T1 - Influence of Micro-Pore Connectivity and Micro-Fractures on Calcium Leaching of Cement Pastes—A Coupled Simulation Approach

AU - Perko, Janez

AU - Ukrainczyk, Neven

AU - Savija, Branko

AU - Phung, Quoc Tri

AU - Koenders, Eddie A.B.

N1 - Score=10

PY - 2020/6/13

Y1 - 2020/6/13

N2 - A coupled numerical approach is used to evaluate the influence of pore connectivity and microcracks on leaching kinetics in fully saturated cement paste. The unique advantage of the numerical model is the ability to construct and evaluate a material with controlled properties, which is very difficult under experimental conditions. Our analysis is based on two virtual microstructures, which are different in terms of pore connectivity but the same in terms of porosity and the amount of solid phases. Numerical fracturing was performed on these microstructures. The non-fractured and fractured microstructures were both subjected to chemical leaching. Results show that despite very different material physical properties, for example, pore connectivity and effective diffusivity, the leaching kinetics remain the same as long as the amount of soluble phases, i.e., buffering capacity, is the same. The leaching kinetics also remains the same in the presence of microcracks.

AB - A coupled numerical approach is used to evaluate the influence of pore connectivity and microcracks on leaching kinetics in fully saturated cement paste. The unique advantage of the numerical model is the ability to construct and evaluate a material with controlled properties, which is very difficult under experimental conditions. Our analysis is based on two virtual microstructures, which are different in terms of pore connectivity but the same in terms of porosity and the amount of solid phases. Numerical fracturing was performed on these microstructures. The non-fractured and fractured microstructures were both subjected to chemical leaching. Results show that despite very different material physical properties, for example, pore connectivity and effective diffusivity, the leaching kinetics remain the same as long as the amount of soluble phases, i.e., buffering capacity, is the same. The leaching kinetics also remains the same in the presence of microcracks.

KW - Numerical models

KW - Pore scale

KW - Cement leaching

KW - Pore connectivity

KW - Effective diffusivity

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/40183375

U2 - 10.3390/ma13122697

DO - 10.3390/ma13122697

M3 - Article

VL - 13

SP - 1

EP - 21

JO - Materials

JF - Materials

SN - 1996-1944

IS - 12

M1 - 2697

ER -

ID: 6927346