Affordable Access

Publisher Website

Hydration of ferrite Ca2AlFeO5in the presence of sulphates and bases

Authors
Journal
Cement and Concrete Research
0008-8846
Publisher
Elsevier
Publication Date
Volume
26
Issue
11
Identifiers
DOI: 10.1016/s0008-8846(96)00154-8

Abstract

Abstract The reaction of synthetic Ca 2AlFeO 5 at 20 °C with (a) H 2O; (b) H 2O, CaSO 4·2H 2O; (c) H 2O, CaSO 4· 1 2H 2O ; (d) H 2O, CaSO 4·2H 2O, Na 2SO 4; (e) H 2O, CaSO 4·2H 2O, K 2SO 4; (f) H 2O, CaSO 4·2H 2O, Ca(OH) 2; (g) H 2O, CaSO 4·2H 2O, Ca 3SiO 5; (h) H 2O, CaSO 4 ·2H 2O, KOH; was studied by differential scanning calorimetry and X-ray powder diffraction. Acetone dried samples were examined at hydration times between 2 min and 28 days, and 4 months in the instance of experiments (f) and (g). In (a) AFm forms immediately followed by hydrogarnet, while in (b-e) the formation of AFm is delayed, since the initial product is AFt, which then transforms into AFm. In the more basic samples (f-g), AFm formation is further delayed due to the introduction of a pronounced dormant period during AFt formation. The strongly basic sample (h) also exhibits this dormant period, but less AFt is formed and AFm appears as in (b-e).

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Characterization of Ca2AlMnO5. A comparative study...

on Cement and Concrete Research Jan 01, 1990

Hydration of 5CaO · 3Al2O3

on Cement and Concrete Research Jan 01, 1986

Sodium ferrite Na2O·1.5Fe2O3as a high-capacity neg...

on Journal of Power Sources Jan 01, 1998

Estimating the cation distributions in the spinel...

on Journal of Magnetism and Magne...
More articles like this..