Chloride removal of calcium aluminate cements: Reaction and physicochemical characteristics

G. M. Kim; S. M. Park; S. W. Park

doi:10.1016/j.cscm.2023.e01975

Chloride removal of calcium aluminate cements: Reaction and physicochemical characteristics

G. M. Kim, S. M. Park, S. W. Park

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

7 Scopus citations

Abstract

The chloride removal characteristics of calcium aluminate cements in chlorinated solution were investigated in the present study. Furthermore, the reaction and the physicochemical characteristics of chloride-bearing calcium aluminate cement powders in the solutions were systematically investigated via leaching of reactive components from cement powders, X-ray diffraction, and BET tests. The independent variable is the content of Al₂O₃ in the cement powders. The test results showed that the chloride removal rate of calcium aluminate cements increased as the content of Al₂O₃ increased. The reaction route for the removal of chlorides was via the transformation of C₂AH₈ into hydrocalumite phases, which lead to an increase in the specific surface areas and mesopores volume in calcium aluminate cements. The obtained results provide information on the reaction and physicochemical characteristics to utilize calcium aluminate cements for chloride removal in a cementitious matrix.

Original language	English
Article number	e01975
Journal	Case Studies in Construction Materials
Volume	18
DOIs	https://doi.org/10.1016/j.cscm.2023.e01975
State	Published - Jul 2023
Externally published	Yes

Keywords

Calcium aluminate cement
Chloride removal
Hydrocalumite
Layered double hydroxide
Physicochemical characteristics

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10.1016/j.cscm.2023.e01975

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title = "Chloride removal of calcium aluminate cements: Reaction and physicochemical characteristics",

abstract = "The chloride removal characteristics of calcium aluminate cements in chlorinated solution were investigated in the present study. Furthermore, the reaction and the physicochemical characteristics of chloride-bearing calcium aluminate cement powders in the solutions were systematically investigated via leaching of reactive components from cement powders, X-ray diffraction, and BET tests. The independent variable is the content of Al2O3 in the cement powders. The test results showed that the chloride removal rate of calcium aluminate cements increased as the content of Al2O3 increased. The reaction route for the removal of chlorides was via the transformation of C2AH8 into hydrocalumite phases, which lead to an increase in the specific surface areas and mesopores volume in calcium aluminate cements. The obtained results provide information on the reaction and physicochemical characteristics to utilize calcium aluminate cements for chloride removal in a cementitious matrix.",

keywords = "Calcium aluminate cement, Chloride removal, Hydrocalumite, Layered double hydroxide, Physicochemical characteristics",

author = "Kim, \{G. M.\} and Park, \{S. M.\} and Park, \{S. W.\}",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

month = jul,

doi = "10.1016/j.cscm.2023.e01975",

language = "English",

volume = "18",

journal = "Case Studies in Construction Materials",

issn = "2214-5095",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Chloride removal of calcium aluminate cements

T2 - Reaction and physicochemical characteristics

AU - Kim, G. M.

AU - Park, S. M.

AU - Park, S. W.

PY - 2023/7

Y1 - 2023/7

N2 - The chloride removal characteristics of calcium aluminate cements in chlorinated solution were investigated in the present study. Furthermore, the reaction and the physicochemical characteristics of chloride-bearing calcium aluminate cement powders in the solutions were systematically investigated via leaching of reactive components from cement powders, X-ray diffraction, and BET tests. The independent variable is the content of Al2O3 in the cement powders. The test results showed that the chloride removal rate of calcium aluminate cements increased as the content of Al2O3 increased. The reaction route for the removal of chlorides was via the transformation of C2AH8 into hydrocalumite phases, which lead to an increase in the specific surface areas and mesopores volume in calcium aluminate cements. The obtained results provide information on the reaction and physicochemical characteristics to utilize calcium aluminate cements for chloride removal in a cementitious matrix.

AB - The chloride removal characteristics of calcium aluminate cements in chlorinated solution were investigated in the present study. Furthermore, the reaction and the physicochemical characteristics of chloride-bearing calcium aluminate cement powders in the solutions were systematically investigated via leaching of reactive components from cement powders, X-ray diffraction, and BET tests. The independent variable is the content of Al2O3 in the cement powders. The test results showed that the chloride removal rate of calcium aluminate cements increased as the content of Al2O3 increased. The reaction route for the removal of chlorides was via the transformation of C2AH8 into hydrocalumite phases, which lead to an increase in the specific surface areas and mesopores volume in calcium aluminate cements. The obtained results provide information on the reaction and physicochemical characteristics to utilize calcium aluminate cements for chloride removal in a cementitious matrix.

KW - Calcium aluminate cement

KW - Chloride removal

KW - Hydrocalumite

KW - Layered double hydroxide

KW - Physicochemical characteristics

UR - https://www.scopus.com/pages/publications/85149438576

U2 - 10.1016/j.cscm.2023.e01975

DO - 10.1016/j.cscm.2023.e01975

M3 - Article

AN - SCOPUS:85149438576

SN - 2214-5095

VL - 18

JO - Case Studies in Construction Materials

JF - Case Studies in Construction Materials

M1 - e01975

ER -

Chloride removal of calcium aluminate cements: Reaction and physicochemical characteristics

Abstract

Keywords

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