Influence du millieu de trempe sur la cinetique d'hydratation du silicate tricalcique

Fierens, Paul; Kabuema, Y.; Tirlocq, J.

doi:10.1016/0008-8846(82)90006-0

Cited by 14 publications

(12 citation statements)

References 4 publications

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“…In addition to procedural, instrumental differences, and also synthesis-based differences, it should be noted that the composition of the solvent used (i.e., the types and concentrations of ions) may lead to ion specific interactions. [50][51][52] These interactions can influence phase dissolution such that some level of difference in phase dissolution rates is expected for solvents having equivalent pH but different compositions, as reported in elsewhere. 50 Broadly, the first-order effect which influences undersaturations (and phase dissolution) is the solution pH.…”

Section: Resultsmentioning

confidence: 80%

“…though less than perfect, are a reasonable means of comparing the dissolution response of the different C 3 S polymorphs obtained using different techniques. In addition to procedural, instrumental differences, and also synthesis‐based differences, it should be noted that the composition of the solvent used (i.e., the types and concentrations of ions) may lead to ion specific interactions . These interactions can influence phase dissolution such that some level of difference in phase dissolution rates is expected for solvents having equivalent pH but different compositions, as reported in elsewhere …”

Section: Resultsmentioning

confidence: 90%

“…13 may suggest that: These notes are written as preliminary propositions only as differences stemming from phase synthesis, e.g., (1) CaO content, which though present in small amounts can influence ionic abundance due to the rapid dissolution of CaO or (2) the cooling rate which influences the formation of structural defects, and which are correlated with reactivity are not considered herein. 52 Thus the C 3 S comparisons shown (Fig. 13), consider that these phases are identical in every way other than (a) impurity content and (b) crystal system.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Vertical Scanning Interferometry: A New Method to Measure the Dissolution Dynamics of Cementitious Minerals

Kumar¹,

Reed

Sant

2013

J. Am. Ceram. Soc.

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The aqueous dissolution rate is a key indicator of a portland cement's reactivity, and is relevant in predicting the progress of reactions and property development in cementitious materials. Though a valuable material property, the dissolution rates of the individual cement phases and their mixtures have been seldom determined. This work for the very first time applies vertical scanning interferometry (VSI) as a new method, aptly suited to measure dissolution dynamics of cement relevant minerals. Special emphasis is placed on measuring the first dissolution rate (DRF), i.e., when water initially and for a short duration (i.e., on the order of tens of seconds) contacts the mineral surface. DRF, mol·m−2·s−1) are measured for a variety of fast and slower dissolving minerals including (1a) natural limestone (CaCO3), (1b) reagent‐grade gypsum (CaSO4·2H2O); (2) alite (impure, MIII‐Ca3SiO5); and (3) an ASTM C150, Type I/II ordinary portland cement across a range of solution pHs. Detailed aspects of image acquisition, processing and interpretation are presented to emphasize the methodological and statistical treatment of the results. The outcomes develop quantifications of aqueous dissolution rates—inputs valuable in simulating cement hydration, and forward a new means to study correlations between chemical composition, crystallography, and the reactivity of cementitious materials.

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Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Vertical Scanning Interferometry: A New Method to Measure the Dissolution Dynamics of Cementitious Minerals

Kumar¹,

Reed

Sant

2013

J. Am. Ceram. Soc.

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“…The presence and the type of defects are driven by the type and amount of mineral trace elements (Al 2 O 3 , MgO, MnO, TiO 2 , etc. ), by the quenching conditions and by possible subsequent thermal posttreatments . In spite of the absence of investigations on dissolution in all of these studies, many of these as well as others mentioned the influence of the defects on the hydration rate.…”

Section: Etch Pit Formation During the Dissolution Of Alitementioning

confidence: 99%

Analytical Model for the Alite (C₃S) Dissolution Topography

Nicoleau¹,

Bertolim²

2015

J. Am. Ceram. Soc.

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The surface topography that develops during the dissolution of alite (or C 3 S) has never been considered as an important aspect of the hydration of portland cement. Like many other minerals, alite dissolution results in the formation of etch pits. In this study, a simple model with a handful of parameters is proposed to explore the kinetic consequences of pitting on the dissolution of alite. The first consequence is an accelerating period during which the reactive surface, that is, the pit, expands. This new feature, to the authors' opinion never reported previously for alite, is supported by experimental data. The mechanisms leading to the activation of the initial dissolution centers and to the growth of pits could be hindered by some inhibitory species such as aluminum ions or organic molecules. The model indicates that only a few assumptions about the formation of pits in the presence of these species are necessary to introduce an initial period of low dissolution prior to the accelerating phase. Such a low early reactivity is similar to the so-called dormant period observed during portland cement hydration. The implications of this new model in cement hydration could go beyond this article and shed light on still unresolved fundamental questions on hydration behavior.

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“…Since C 3 S dissolution and the precipitation of C-S-H and Portlandite share the same ions, they are kinetically coupled through their degrees of underand super-saturation. Elaborating kinetics models that neglect or simplify dissolution is therefore highly tentative, in light of experimental observations showing the relationship hydration / intrinsic C 3 S reactivity, impacted for example by particle size [1], annealing [2], or other thermal or mechanical treatments [3,4].…”

Section: Introductionmentioning

confidence: 99%

Advances in dissolution understanding and their implications for cement hydration

Juilland¹,

Nicoleau²,

Arvidson³

et al. 2017

RILEM Tech Lett

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Influence du millieu de trempe sur la cinetique d'hydratation du silicate tricalcique

Cited by 14 publications

References 4 publications

Vertical Scanning Interferometry: A New Method to Measure the Dissolution Dynamics of Cementitious Minerals

Vertical Scanning Interferometry: A New Method to Measure the Dissolution Dynamics of Cementitious Minerals

Analytical Model for the Alite (C₃S) Dissolution Topography

Advances in dissolution understanding and their implications for cement hydration

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Influence du millieu de trempe sur la cinetique d'hydratation du silicate tricalcique

Cited by 14 publications

References 4 publications

Vertical Scanning Interferometry: A New Method to Measure the Dissolution Dynamics of Cementitious Minerals

Vertical Scanning Interferometry: A New Method to Measure the Dissolution Dynamics of Cementitious Minerals

Analytical Model for the Alite (C3S) Dissolution Topography

Advances in dissolution understanding and their implications for cement hydration

Contact Info

Product

Resources

About

Analytical Model for the Alite (C₃S) Dissolution Topography