𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Influence of particle sizes of individual minerals on the hydration processes in the system C2S-C4A3S-CS

✍ Scribed by S. Sahu; V. Tomková; J. Majling; J. Havlica

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
323 KB
Volume
23
Category
Article
ISSN
0008-8846

No coin nor oath required. For personal study only.

✦ Synopsis

The influence of particle size distribution of individual minerals of a modelled sulphoaluminate belite cement clinker containing the phases C2S, C4A3Sand CS on the hydration kinetics was studied by X-ray diffraction analysis, and differential calorimetry. The surface area of the phases controls the concentrations of different ions in the nonequilibrium liquid phase and by this way determines the mechanism of formation of hydrated products in the system. Results show that the particle sizes of the anhydrite influence significantly on the kinetics and mechanism of precipitation of hydrates in the initial period. Whereas in the presence of fine particles of C2S leads to the retardation of reaction processes.

📜 SIMILAR VOLUMES

A reply to S. Chatterji's discussion of
A reply to S. Chatterji's discussion of the paper “the influence of Na2O on the hydration of C3A. I. Paste hydration”
✍ G.A.C.M. Spierings; H.N. Stein 📂 Article 📅 1977 🏛 Elsevier Science 🌐 English ⚖ 22 KB

The present authors regret, that in the literature survey for their paper in Cement and Concrete Research 6, 265 (1976), they missed the references mentioned by Dr. Chatterji. However, since there appears to be agreement between the results obtained by Gupta c.s., Breval (1) and by us, at least with

The hydration of Portland cement, C3S an
The hydration of Portland cement, C3S and C2S in the presence of a calcium complexing admixture (EDTA)
✍ N.L. Thomas; D.D. Double 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 625 KB

The effect of EDTA, a calcium chelating agent, on the early hydration of Portland cement, C3Sand B-C2S has been studied by solution analysis and electron microscopy. EDTA is a retarder of cement hydration. Under normal conditions of hydration, the silica levels in solution are very low (<0.05 raM) b