Dehydration kinetics of calcium aluminate cement hydrate under non-isothermal conditions

S. Maitra; S. Bose; N. Bandyopadhyay; A. Roychoudhury

doi:10.1016/j.ceramint.2004.06.002

Dehydration kinetics of calcium aluminate cement hydrate under non-isothermal conditions

S. Maitra, S. Bose, N. Bandyopadhyay, A. Roychoudhury

Materials Engineering

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

Abstract

Calcium aluminate cement (containing 75% Al₂O₃), which finds extensive high temperature applications, was synthesized by sintering a mixture of calcined alumina and synthetic calcium carbonate. The cement was hydrated and its kinetics of thermal dehydration was studied under non-isothermal conditions by thermo-gravimetry using the integral approximation model. It was observed that on heating the cement hydrate followed multistage dehydration with different reaction orders at different stages. The activation energies of dehydration for these different stages were compared.

Original language	English
Pages (from-to)	371-374
Number of pages	4
Journal	Ceramics International
Volume	31
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2004.06.002
Publication status	Published - 11 Sept 2004

Keywords

high alumina cement hydrate
kinetics
dehydration
non-isothermal

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10.1016/j.ceramint.2004.06.002

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title = "Dehydration kinetics of calcium aluminate cement hydrate under non-isothermal conditions",

abstract = "Calcium aluminate cement (containing 75\% Al2O3), which finds extensive high temperature applications, was synthesized by sintering a mixture of calcined alumina and synthetic calcium carbonate. The cement was hydrated and its kinetics of thermal dehydration was studied under non-isothermal conditions by thermo-gravimetry using the integral approximation model. It was observed that on heating the cement hydrate followed multistage dehydration with different reaction orders at different stages. The activation energies of dehydration for these different stages were compared.",

keywords = "high alumina cement hydrate, kinetics, dehydration, non-isothermal",

author = "S. Maitra and S. Bose and N. Bandyopadhyay and A. Roychoudhury",

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doi = "10.1016/j.ceramint.2004.06.002",

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T1 - Dehydration kinetics of calcium aluminate cement hydrate under non-isothermal conditions

AU - Maitra, S.

AU - Bose, S.

AU - Bandyopadhyay, N.

AU - Roychoudhury, A.

PY - 2004/9/11

Y1 - 2004/9/11

N2 - Calcium aluminate cement (containing 75% Al2O3), which finds extensive high temperature applications, was synthesized by sintering a mixture of calcined alumina and synthetic calcium carbonate. The cement was hydrated and its kinetics of thermal dehydration was studied under non-isothermal conditions by thermo-gravimetry using the integral approximation model. It was observed that on heating the cement hydrate followed multistage dehydration with different reaction orders at different stages. The activation energies of dehydration for these different stages were compared.

AB - Calcium aluminate cement (containing 75% Al2O3), which finds extensive high temperature applications, was synthesized by sintering a mixture of calcined alumina and synthetic calcium carbonate. The cement was hydrated and its kinetics of thermal dehydration was studied under non-isothermal conditions by thermo-gravimetry using the integral approximation model. It was observed that on heating the cement hydrate followed multistage dehydration with different reaction orders at different stages. The activation energies of dehydration for these different stages were compared.

KW - high alumina cement hydrate

KW - kinetics

KW - dehydration

KW - non-isothermal

UR - http://dx.doi.org/10.1016/j.ceramint.2004.06.002

U2 - 10.1016/j.ceramint.2004.06.002

DO - 10.1016/j.ceramint.2004.06.002

M3 - Article

SN - 0272-8842

VL - 31

SP - 371

EP - 374

JO - Ceramics International

JF - Ceramics International

IS - 3

ER -

Dehydration kinetics of calcium aluminate cement hydrate under non-isothermal conditions

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Keywords

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