Journal ArticleDOI
Nature and concentration effect of stabilizing elements of beta-dicalcium silicate on its hydration rate
P. Fierens,J. Tirlocq +1 more
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TLDR
In this article, chemical stabilization and hydration reactivity of beta-dicalcium silicate were discussed. But the authors focused on the effect of the stabilizing ion and not only on the nature but also on the concentration of stabilizer.About:
This article is published in Cement and Concrete Research.The article was published on 1983-03-01. It has received 34 citations till now. The article focuses on the topics: Silicate & Reactivity (chemistry).read more
Citations
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Journal ArticleDOI
The effect of foreign ions on the reactivity of the CaO–SiO2–Al2O3–Fe2O3 system: Part II: Cations
TL;DR: In this paper, the effect of foreign cations on the reactivity of the CaO-SiO 2 -Al 2 O 3 -Fe 2 O3 system was evaluated on the basis of the free lime content in samples sintered at 1200 and 1450 °C.
Journal ArticleDOI
Influence of Minor Ions on the Stability and Hydration Rates of β‐Dicalcium Silicate
Young-Min Kim,Seong-Hyeon Hong +1 more
TL;DR: In this article, the effect of the doping concentration on the phase stability and degree of hydration of reactive dicalcium silicate (C2S, Ca2SiO4) synthesized using the Pechini process was investigated.
Book ChapterDOI
18 – Sulfoaluminate cement
TL;DR: Yeelimite-rich calcium sulfoaluminate cements (CSA, Al 2O3 content ranging between 30 and 40wt%) and Belite-active BCSAF cements, also known as sulfobelite, are disentangled in this paper.
Journal ArticleDOI
Reactive belite stabilization mechanisms by boron-bearing dopants
TL;DR: In this paper, a new structural description for borax doping in belite has been developed for {alpha'{sub H}-Ca{sub 185}-Na{sub 085}(BO{sub 3})-C{sub 2}S is the main phase (for x = 025) and is single phase for x = 1.
Dissertation
The development of microstructure during the hydration of Portland cement.
Abstract: The hydration of commercial Portland cements and of synthetic Portland cement phases has been investigated, by electron optical methods and calorimetry. Examination of fracture surfaces in the scanning electron microscope (SEM), of ion-thinned sections from bulk pastes by transmission electron microscopy (TEM) and by scanning transmission electron microscopy (STEM), of thin sections extracted from undried paste in the environmental cell of a high voltage (1Mev) electron microscope (HVEM) and of back scattered electron images from polished sections in the SEM have been combined to give a detailed picture of the development of morphology during cement hydration. The use of this combination of methods takes into account the effect of drying on microstructure and allows discussion of unrepresentative images produced by some methods. The possible mechanisms by which the various phases hydrate and the way in which these are altered or modified in Portland cement itself are discussed. The use of back scattered electron images of polished surfaces is presented as a method of quantifying the microstructure of a cement, and the potential of this technique for relating the microstructure to the mechanical properties and durability of cement is discussed.
References
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Journal ArticleDOI
Numerical Data for Some Commonly Used Solid State Reaction Equations
TL;DR: In this paper, the authors give numerical tables of F(α) in relation to α, and to (t/t0.5) where t 0.5 is the time for 50% reaction and A is a calculable constant depending on the form of F (α).
Journal ArticleDOI
Development of surface in the hydration of calcium silicates. ii. extension of investigations to earlier and later stages of hydration
Journal ArticleDOI
The effect of stabilizing agents on the hydration rate of β-C2S
TL;DR: In this paper, a model involving the charge/radius ratio of the metal ion was developed to explain altered hydration rates, which proved useful in describing the crystal-chemical stabilization of β-C 2 S.
Journal ArticleDOI
Hydration of Various Beta‐Dicalcium Silicate Preparations
D. L. Kantro,C. H. Weise +1 more
TL;DR: In this article, three stabilizers were used to stabilize the preparation of Beta-dicalcium silicates, and pastes were prepared and hydrated for various periods, and compressive strengths and compositions were determined.
Journal ArticleDOI
Chemische Untersuchungen von Silicaten. XVI. Über die ausschlaggebende Bedeutung kleiner Mengen von Alkali bei der β → γ‐Umwandlung des Ca2SiO4
Erich Thilo,Herbert Funk +1 more
TL;DR: In this paper, die im allgemeinen auftretende Hemmung der Umwandlung der bei Zimmertemperatur metastabilen β-modifikation des Ca2SiO4 in die stabile β-Modifikations, die, falls sie stattfindet, unter „Zerrieseln” erfolgt, auf der Anwesenheit sehr kleiner Mengen von Alkali beruht.