Calcium Hydroxide as a Binder in Portland Cement Paste

Berger, R.L.; Cahn, D.S.; McGregor, Julie

doi:10.1111/j.1151-2916.1970.tb12004.x

Cited by 39 publications

(7 citation statements)

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“…A preferential deposition of c~(oH), in the interfacial zone (less than 50 microns) around aggregates in concr&e and fibres in paste has been observed (4)(5)(6).…”

Section: Discussionmentioning

confidence: 99%

Influence of silica fume on the microstructural development in cement mortars

Cheng-yi¹,

Feldman

1985

Cement and Concrete Research

123

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/0008-8846(85) Cement and Concrete Research, 15, 2, pp. 285-94, 1985-03-01 Influence of silica fume on the microstructural development in cement mortars Cheng-Yi, H.; Feldman, R. F. ABSTRACT Cement mortars containing 0, 10 and 30 percent silica fume were prepared at waterlcement + silica fume ratios of 0.45 and 0.60.Compressive strength, Ca(0H) and non-evaporable water contents and pore-size distribution were monitored up to 180 days. Silica fume reacts with most of the Ca(OH)2 formed during hydration within 28 days and improves the compressive strength of the mortar.In addition it affects the poresize distribution of mortars by reacting with Ca(0H) formed around the sand grains and also with that dispersed throughout the cement paste.

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“…A preferential deposition of c~(oH), in the interfacial zone (less than 50 microns) around aggregates in concr&e and fibres in paste has been observed (4)(5)(6).…”

Section: Discussionmentioning

confidence: 99%

Influence of silica fume on the microstructural development in cement mortars

Cheng-yi¹,

Feldman

1985

Cement and Concrete Research

123

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“…It is also used for cultural heritage conservation [3,4], network structure development [5], and bone restoration [6]. It is also an important material for Portland cement production and hardening [7,8]. Other researchers also reported on the effect of the surface area of Ca (OH)2 nanoparticles, on the carbonation kinetics for material construction; environmental and art preservation applications [9].…”

Section: Introductionmentioning

confidence: 99%

“…Other researchers also reported on the effect of the surface area of Ca (OH)2 nanoparticles, on the carbonation kinetics for material construction; environmental and art preservation applications [9]. For all such advanced applications [1][2][3][4][5][6][7][8][9], the purity of the material matters a lot. If there is an impurity present in the given material, it will have a different electronic structure.…”

Section: Introductionmentioning

confidence: 99%

Influence of Impurity on the Properties of Chemically Synthesized Calcium Hydroxide

Harish¹,

Kumar²,

Kumari³

et al. 2021

J. Nano- Electron. Phys.

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Here we report synthesis and characterization of chemically synthesized calcium hydroxide (Ca(OH)2) with and without deliberate presence of NaNO3 as an impurity. Calcium nitrate tetrahydrate (Ca(NO3)2.4H2O) is used as precursor and alkaline NaOH solution is used as precipitant to synthesize the Ca(OH)2 samples. The samples were characterized by XRD, FESEM, FTIR spectroscopy, DTA, TGA and UV-Vis spectroscopy techniques. From the UV-Vis spectroscopy results, it is found that the Ca(OH)2 with NaNO3 impurity has higher bandgap than the sample without NaNO3. The weight loss in TGA is also more for the Ca(OH)2 with impurity than the one for without impurity. The results are discussed in terms of composition formed during synthesis process.

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“…Calcium hydroxide [Ca(OH) 2 ] nanoparticles (CHNPs) are utilized for advanced bone restoration, deacidification, and inhibition of ink corrosion of papers, cultural heritage conservation, consolidation of dolostone in historical buildings, and synthesis of CaO nanoparticles . Calcium hydroxide [Ca(OH) 2 ] is also important for portland cement production and hardening, network structure development, and advanced biomedical application . Particularly, in the backdrop of advanced biomedical application, the synthesis of CHNPs evolves as a very important aspect that demands thorough attention.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nano Calcium Hydroxide in Aqueous Medium

et al. 2015

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The present work reports a simple, inexpensive method for synthesis of calcium hydroxide [Ca(OH) 2 ] nanoparticles (CHNPs). The method involves chemical precipitation (CP) in aqueous medium at room temperature. Calcium nitrate dihydrate [Ca (NO 3 ) 2 .2H 2 O] and sodium hydroxide were used as precursors. The CHNPs were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Rietveld analysis, field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM), BET surface area evaluation as well as particle size distribution analysis techniques. The results confirmed the synthesis of CHNPs as the major phase. The CHNPs exhibited an average size of about 350 nm. In addition, some calcite phase formed due to the inevitable carbonation process. A very minor amount of aragonite phase was also present. A schematically developed new qualitative model is proposed to explain the genesis and subsequent evolution of the various phases at the nanoscale. The model helps to identify the rate-controlling step. It also highlights the implication of reaction kinetics control in synthesis of predesigned nanophase assembly.

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Calcium Hydroxide as a Binder in Portland Cement Paste

Cited by 39 publications

References 1 publication

Influence of silica fume on the microstructural development in cement mortars

Influence of silica fume on the microstructural development in cement mortars

Influence of Impurity on the Properties of Chemically Synthesized Calcium Hydroxide

Synthesis of Nano Calcium Hydroxide in Aqueous Medium

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