Impact of calcium ions leaching caused by biogenic acid attack on durability of cement composites

Pollack Periodica

Volume/Issue:: Volume 10: Issue 3
DOI:: https://doi.org/10.1556/606.2015.10.3.13

Authors: Martina Kovalčíková, Adriana Eštoková, and Alena Luptáková

] Kovalčíková M. , Eštoková A. Leaching of calcium and silicon from cement composites in the aggressive environment , Pollack Periodica , Vol. 9 , No. 2 , 2014 , pp. 123 – 130 . [13

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Leaching of calcium and silicon from cement composites in the aggressive environment

Pollack Periodica

Volume/Issue:: Volume 9: Issue 2
DOI:: https://doi.org/10.1556/pollack.9.2014.2.12

Authors: Martina Kovalčíková and Adriana Eštoková

Eštoková A, Kovalcíková M., Sicáková A. Leaching of calcium and silicon from cement composites in sulphate environment, CEST 2013: Proceedings of the 13th International Conference on Environmental Science and Technology , 5–7 September 2013, Athens, Greece

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Solvent extraction of calcium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of dibenzo-30-crown-10

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 287: Issue 2
DOI:: https://doi.org/10.1007/s10967-010-0695-1

Authors: E. Makrlík, P. Vaňura, and P. Selucký

Abstract

Extraction of microamounts of calcium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H⁺B⁻) in the presence of dibenzo-30-crown-10 (DB30C10, L) has been investigated. The equilibrium data have been explained assuming that the species HL⁺, CaL²⁺, CaL₂ ²⁺, CaHL³⁺ and CaHL₂ ³⁺ are extracted into the organic phase. The values of extraction and stability constants of the cationic complexes in nitrobenzene saturated with water have been determined.

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Solvent extraction of calcium and strontium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of polypropylene glycol PPG 425

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 287: Issue 1
DOI:: https://doi.org/10.1007/s10967-010-0660-z

Authors: E. Makrlík, P. Vaňura, and P. Selucký

Abstract

Extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H⁺B⁻) in the presence of polypropylene glycol PPG 425 (L) has been investigated. The equilibrium data have been explained assuming that the species HL⁺, CaL²⁺ and SrL²⁺ (L = PPG 425) are extracted into the organic phase. The values of extraction and stability constants of the cationic complex species in nitrobenzene saturated with water have been determined. It was found that in water-saturated nitrobenzene, the stability constant of the complex SrL²⁺, where L is PPG 425, is somewhat higher than that of the species CaL²⁺ with the same ligand L.

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Extraction of calcium and strontium into phenyltrifluoromethyl sulfone by using hydrogen dicarbollylcobaltate in the presence of polyethylene glycol PEG 400

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 284: Issue 1
DOI:: https://doi.org/10.1007/s10967-010-0473-0

Authors: E. Makrlík, P. Vaňura, and P. Selucký

Abstract

Extraction of microamounts of calcium and strontium by a phenyltrifluoromethyl sulfone (FS 13) solution of hydrogen dicarbollylcobaltate (H⁺B⁻) in the presence of polyethylene glycol PEG 400 (L) has been investigated. The equilibrium data have been explained assuming that the species HL⁺, CaL²⁺ and SrL²⁺ (L = PEG 400) are extracted into the organic phase. The values of extraction and stability constants of the cationic complex species in FS 13 saturated with water have been determined. It was found that in water-saturated FS 13, the stability constant of the complex SrL²⁺, where L is PEG 400, is somewhat higher than that of the species CaL²⁺ with the same ligand L.

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Extraction of calcium and strontium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of 1,2-(diphenylphosphino)ethylene dioxide

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 285: Issue 2
DOI:: https://doi.org/10.1007/s10967-010-0542-4

Authors: E. Makrlík, P. Vaňura, and P. Selucký

Abstract

Extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H⁺B⁻) in the presence of 1,2-(diphenylphosphino)ethylene dioxide (DPPEDO, L) has been investigated. The equilibrium data have been explained assuming that the species HL⁺, HL₂ ⁺, CaL₂ ²⁺, CaL₃ ²⁺, CaL₄ ²⁺, SrL₂ ²⁺ and SrL₃ ²⁺ are extracted into the organic phase. The values of extraction and stability constants of the cationic complexes in nitrobenzene saturated with water have been determined. In the considered nitrobenzene medium, it was found that the stability constants of the CaL_n ²⁺ complexes, where n = 2, 3 and L is DPPEDO, are somewhat higher than those of the corresponding complex species SrL_n ²⁺.

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Solvent extraction of calcium and strontium into nitrobenzene by using a synergistic mixture of hydrogen dicarbollylcobaltate and N,N,N′,N′-tetraisobutyl-2,6-dipicolinamide

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 288: Issue 1
DOI:: https://doi.org/10.1007/s10967-010-0902-0

Authors: E. Makrlík, P. Vaňura, P. Selucký, V. Babain, and I. Smirnov

Abstract

Extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H⁺B⁻) in the presence of N,N,N′,N′-tetraisobutyl-2,6-dipicolinamide [T(iBu)DPA, L] has been investigated. The equilibrium data have been explained assuming that the species HL⁺, HL₂ ⁺, CaL₂ ²⁺, SrL₂ ²⁺ and SrL₃ ²⁺ are extracted into the organic phase. The values of extraction and stability constants of the cationic complexes in nitrobenzene saturated with water have been determined.

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Extraction of microamounts of calcium and strontium into nitrobenzene using synergistic mixture of hydrogen dicarbollylcobaltate and 2,3-naphtho-15-crown-5

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 283: Issue 1
DOI:: https://doi.org/10.1007/s10967-009-0127-2

Authors: E. Makrlík, P. Vaňura, P. Selucký, and V. Kašička

Abstract

Extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H⁺B⁻) in the presence of 2,3-naphtho-15-crown-5 (N15C5, L) has been investigated. The equilibrium data have been explained assuming that the complexes HL⁺, HL₂ ⁺, CaL²⁺, CaL₂ ²⁺ and SrL₂ ²⁺ are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. It has been found that in water saturated nitrobenzene the stability constant of the SrL₂ ²⁺ cationic complex species is substantially higher than that of the complex CaL₂ ²⁺.

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Solvent extraction of calcium and strontium into nitrobenzene by using synergistic mixture of hydrogen dicarbollylcobaltate and diphenyl-N-butylcarbamoylmethyl phosphine oxide

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 284: Issue 1
DOI:: https://doi.org/10.1007/s10967-009-0433-8

Authors: E. Makrlík, P. Vaňura, and P. Selucký

Abstract

Extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H⁺B⁻) in the presence of diphenyl-N-butylcarbamoylmethyl phosphine oxide (DPBCMPO, L) has been investigated. The equilibrium data have been explained assuming that the species HL⁺,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{HL}}_{2}^{ + }$$ \end{document}

,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{ML}}_{2}^{2 + }$$ \end{document}

,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{ML}}_{3}^{2 + }$$ \end{document}

and

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{ML}}_{4}^{2 + }$$ \end{document}

(M²⁺ = Ca²⁺, Sr²⁺) are extracted into the organic phase. The values of extraction and stability constants of the cationic complexes in nitrobenzene saturated with water have been determined. In the considered nitrobenzene medium, it was found that the stability of the

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{SrL}}_{2,{\text{org}}}^{2 + }$$ \end{document}

complex is somewhat higher than that of species

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{CaL}}_{2,{\text{org}}}^{2 + }$$ \end{document}

, while the stability constants of the remaining strontium complexes

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{SrL}}_{3,{\text{org}}}^{2 + }$$ \end{document}

and

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{SrL}}_{4,{\text{org}}}^{2 + }$$ \end{document}

are smaller than those of the corresponding complex species

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{CaL}}_{n}^{2 + }$$ \end{document}

(n = 3, 4).

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Solvent extraction of calcium and strontium into nitrobenzene by using a synergistic mixture of hydrogen dicarbollylcobaltate and diphenyl-N,N-dibutylcarbamoylmethyl phosphine oxide

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 287: Issue 1
DOI:: https://doi.org/10.1007/s10967-010-0680-8

Authors: E. Makrlík, P. Vaňura, P. Selucký, I. Smirnov, and V. Babain

Abstract

Extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H⁺B⁻) in the presence of diphenyl-N,N-dibutylcarbamoylmethyl phosphine oxide (DPDBCMPO, L) has been investigated. The equilibrium data have been explained assuming that the species HL⁺,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{HL}}_{2}^{ + }$$ \end{document}

, CaL²⁺,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{CaL}}_{ 2}^{{ 2 { + }}}$$ \end{document}

,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{CaL}}_{ 3}^{{ 2 { + }}}$$ \end{document}

, SrL²⁺,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{SrL}}_{ 2}^{{ 2 { + }}}$$ \end{document}

,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{SrL}}_{ 3}^{{ 2 { + }}}$$ \end{document}

and

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{SrL}}_{ 4}^{{ 2 { + }}}$$ \end{document}

are extracted into the organic phase. The values of extraction and stability constants of the cationic complexes in nitrobenzene saturated with water have been determined. In the considered nitrobenzene medium, it was found that the stability constants of the complexes CaL²⁺,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{CaL}}_{ 2}^{{ 2 { + }}}$$ \end{document}

and

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{CaL}}_{ 3}^{{ 2 { + }}}$$ \end{document}

, where L is DPDBCMPO, are somewhat higher than those of the corresponding complex species SrL²⁺,

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{SrL}}_{ 2}^{{ 2 { + }}}$$ \end{document}

and

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $${\text{SrL}}_{ 3}^{{ 2 { + }}}$$ \end{document}

.

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Impact of calcium ions leaching caused by biogenic acid attack on durability of cement composites

Leaching of calcium and silicon from cement composites in the aggressive environment

Solvent extraction of calcium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of dibenzo-30-crown-10

Abstract

Solvent extraction of calcium and strontium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of polypropylene glycol PPG 425

Abstract

Extraction of calcium and strontium into phenyltrifluoromethyl sulfone by using hydrogen dicarbollylcobaltate in the presence of polyethylene glycol PEG 400

Abstract

Extraction of calcium and strontium into nitrobenzene by using hydrogen dicarbollylcobaltate in the presence of 1,2-(diphenylphosphino)ethylene dioxide

Abstract

Solvent extraction of calcium and strontium into nitrobenzene by using a synergistic mixture of hydrogen dicarbollylcobaltate and N,N,N′,N′-tetraisobutyl-2,6-dipicolinamide

Abstract

Extraction of microamounts of calcium and strontium into nitrobenzene using synergistic mixture of hydrogen dicarbollylcobaltate and 2,3-naphtho-15-crown-5

Abstract

Solvent extraction of calcium and strontium into nitrobenzene by using synergistic mixture of hydrogen dicarbollylcobaltate and diphenyl-N-butylcarbamoylmethyl phosphine oxide

Abstract

Solvent extraction of calcium and strontium into nitrobenzene by using a synergistic mixture of hydrogen dicarbollylcobaltate and diphenyl-N,N-dibutylcarbamoylmethyl phosphine oxide

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