Study of the early hydration of calcium aluminates in the presence of different metallic salts

被引：46

作者：

Duran, A. ^{[1
]}

Sirera, R. ^{[1
]}

Perez-Nicolas, M. ^{[1
]}

Navarro-Blasco, I. ^{[1
]}

Fernandez, J. M. ^{[1
]}

Alvarez, J. I. ^{[1
]}

机构：

[1] Univ Navarra, Sch Sci, Dept Chem & Soil Sci, MIMED Res Grp, Irunlarrea 1, Pamplona 31008, Spain

来源：

CEMENT AND CONCRETE RESEARCH | 2016年 / 81卷

关键词：

Calorimetry; Hydration products; Lithium compounds; Chromium; Zinc; LAYERED DOUBLE HYDROXIDE; PORTLAND-CEMENT; AFM PHASE; BEHAVIOR; CAAL2O4; MICROSTRUCTURE; IMMOBILIZATION; STABILIZATION; DEHYDRATION; STABILITY;

D O I：

10.1016/j.cemconres.2015.11.013

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effect of chlorides and nitrates of Li(I), Cr(III), Zn(II), Pb(II) nitrate and Cr(VI) (chromate) on the early hydration of ternary cement system of calcium aluminates (CA, CA(2), C(12)A(7)) was reported. Li(I) and Cr(III) caused a strong acceleration of the hydration, while Zn(II) as well as chromate gave rise to a slight acceleration. On the contrary, Pb(II) and Cu(II) retarded the hydration. A clear formation of AFm phases during the first hydration stages was found and related to the acceleration ability. Anions (nitrate or chloride as counterions or even chromate) were able to be incorporated into the interlayer space of AFm, yielding insoluble and stable compounds. A balance between the insolubility of the metal hydroxides (dependant on the low amphoteric character of the compound) and the ability of the formation of AFm hydrates seems to be very important to lean the equilibrium towards the retarding of the hydration or towards the acceleration, respectively. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1 / 15

页数：15

共 49 条

[1] Diffusion studies in formation and sintering of CaAl2O4 and BaAl2O4: A comparative evaluation [J].

Ali, MM ;

Agarwal, SK ;

Handoo, SK .

CEMENT AND CONCRETE RESEARCH, 1997, 27 (07) :979-982

[2] Microstructural consequences of nanosilica addition on aerial lime binding materials: Influence of different drying conditions [J].

Alvarez, J. I. ;

Fernandez, J. M. ;

Navarro-Blasco, I. ;

Duran, A. ;

Sirera, R. .

MATERIALS CHARACTERIZATION, 2013, 80 :36-49

[3] Hydration states of AFm cement phases [J].

Baquerizo, Luis G. ;

Matschei, Thomas ;

Scrivener, Karen L. ;

Saeidpour, Mahsa ;

Wadso, Lars .

CEMENT AND CONCRETE RESEARCH, 2015, 73 :143-157

[4] LITHIUM-SALTS AS SET ACCELERATORS FOR HIGH-ALUMINA CEMENTS - DISCUSSION [J].

BENSTED, J .

CEMENT AND CONCRETE RESEARCH, 1994, 24 (02) :385-386

[5] Hydration of calcium sulfoaluminate cement by a ZnCl2 solution: Investigation at early age [J].

Berger, Stephane ;

Coumes, Celine Cau Dit ;

Le Bescop, Patrick ;

Damidot, Denis .

CEMENT AND CONCRETE RESEARCH, 2009, 39 (12) :1180-1187

[6] Friedel's salt, Ca2Al(OH)6(Cl,OH)•2H2O:: Its solid solutions and their role in chloride binding [J].

Birnin-Yauri, UA ;

Glasser, FP .

CEMENT AND CONCRETE RESEARCH, 1998, 28 (12) :1713-1723

[7] Layered double hydroxide stability. 1. Relative stabilities of layered double hydroxides and their simple counterparts [J].

Boclair, JW ;

Braterman, PS .

CHEMISTRY OF MATERIALS, 1999, 11 (02) :298-302

[8] STUDIES ON 4CAO.AL2O3.13H2O AND THE RELATED NATURAL MINERAL HYDROCALUMITE [J].

BUTTLER, FG ;

GLASSER, LSD ;

TAYLOR, HFW .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1959, 42 (03) :121-126

[9] Chloride binding of synthetic Ca-Al-NO3 LDHs in hardened cement paste [J].

Chen, Yuxuan ;

Shui, Zhonghe ;

Chen, Wei ;

Chen, Guowei .

CONSTRUCTION AND BUILDING MATERIALS, 2015, 93 :1051-1058

[10] THE ACCELERATION AND RETARDATION OF SET HIGH ALUMINA CEMENT BY ADDITIVES [J].

CURRELL, BR ;

GRZESKOWLAK, R ;

MIDGLEY, HG ;

PARSONAGE, JR .

CEMENT AND CONCRETE RESEARCH, 1987, 17 (03) :420-432

← 1 2 3 4 5 →