Application of thermodynamic modeling to predict the stable hydrate phase assemblages in ternary CSA-OPC-anhydrite systems and quantitative verification by QXRD

被引：35

作者：

Wolf, J. J. ^{[1
]}

Jansen, D. ^{[1
]}

Goetz-Neunhoeffer, F. ^{[1
]}

Neubauer, J. ^{[1
]}

机构：

[1] Friedrich Alexander Univ Erlangen Nuernberg, GeoZentrum Nordbayern, Mineral, Schlossgarten 5a, D-91054 Erlangen, Germany

来源：

CEMENT AND CONCRETE RESEARCH | 2020年 / 128卷

关键词：

Thermodynamic calculations; Kinetics; Hydration products; Sulfoaluminate; Portland cement; C-S-H; CALCIUM-SILICATE-HYDRATE; PORTLAND-CEMENT; YEELIMITE; STABILITY; KINETICS; AL;

D O I：

10.1016/j.cemconres.2019.105956

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Thermodynamic modeling was used to predict the stable hydrate phase assemblages in a ternary CSA-OPC-anhydrite system. On the basis of this modeling, five systems with diverging expected hydrate phases were chosen for experimental examination via QXRD and TGA. The aim of this study was to examine whether and to which extent the predicted equilibrium states are reached after 28 days of hydration. Qualitatively the predicted hydrate phase assemblages were reached for all five systems after 28 d of hydration. When the reaction degrees of the anhydrous phases are taken into account the experimental data fits remarkably well to the thermodynamic model. Additionally, C2S dissolution was found to be the most rapid in straetlingite forming environments.

引用

页数：9

共 54 条

[1] Composition and density of nanoscale calcium-silicate-hydrate in cement [J].

Allen, Andrew J. ;

Thomas, Jeffrey J. ;

Jennings, Hamlin M. .

NATURE MATERIALS, 2007, 6 (04) :311-316

[2] Rietveld quantitative phase analysis of Yeelimite-containing cements [J].

Alvarez-Pinazo, G. ;

Cuesta, A. ;

Garcia-Mate, M. ;

Santacruz, I. ;

Losilla, E. R. ;

De la Torre, A. G. ;

Leon-Reina, L. ;

Aranda, M. A. G. .

CEMENT AND CONCRETE RESEARCH, 2012, 42 (07) :960-971

[3] Compressive strength and hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended pastes [J].

Bai, J ;

Chaipanich, A ;

Kinuthia, JM ;

O'Farrell, M ;

Sabir, BB ;

Wild, S ;

Lewis, MH .

CEMENT AND CONCRETE RESEARCH, 2003, 33 (08) :1189-1202

[4] Advances in understanding ye'elimite-rich cements [J].

Ben Haha, Mohsen ;

Winnefeld, Frank ;

Pisch, Alexander .

CEMENT AND CONCRETE RESEARCH, 2019, 123

[5] Influence of a thermal cycle at early age on the hydration of calcium sulphoaluminate cements with variable gypsum contents [J].

Berger, Stephane ;

Cournes, Celine Cau Dit ;

Le Bescop, Patrick ;

Damidot, Denis .

CEMENT AND CONCRETE RESEARCH, 2011, 41 (02) :149-160

[6] Quantitative analysis of C-S-H in hydrating alite pastes by in-situ XRD [J].

Bergold, S. T. ;

Goetz-Neunhoeffer, F. ;

Neubauer, J. .

CEMENT AND CONCRETE RESEARCH, 2013, 53 :119-126

[7]

Bizzozero J., 2013, P 1 INT C SULPH CEM, P31

[8]

Bullerjahn F., 2018, Characterisation and hydration of yeelimite containing cements

[9] Hydration reactions and stages of clinker composed mainly of stoichiometric ye'elimite [J].

Bullerjahn, Frank ;

Boehm-Courjault, Emmanuelle ;

Zajac, Maciej ;

Ben Haha, Mohsen ;

Scrivener, Karen .

CEMENT AND CONCRETE RESEARCH, 2019, 116 :120-133

[10] Understanding expansion in calcium sulfoaluminate-belite cements [J].

Chen, Irvin A. ;

Hargis, Craig W. ;

Juenger, Maria C. G. .

CEMENT AND CONCRETE RESEARCH, 2012, 42 (01) :51-60

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