Dissolution of CaSO4·1/2H2O and precipitation of CaSO4·2H2O - A kinetic study by synchrotron X-ray powder diffraction

Cement and Concrete Research

Volumn 31, Issue 4, 2001, Pages 641-646

  Solberg, Cristell ^a,b   Hansen, Staffan ^a  

^a LUND UNIVERSITY   (Sweden)

^b Gyproc AB   (Sweden)

Author keywords

Hydration; Kinetics; Sulfate; X ray diffraction

Indexed keywords

ADDITIVES; CALCIUM COMPOUNDS; DISSOLUTION; HYDRATION; PRECIPITATION (CHEMICAL); X RAY POWDER DIFFRACTION;

SYNCHROTRON X RAY POWDER DIFFRACTION;

BINDERS;

EID: 0035303385     PISSN: 00088846     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0008-8846(01)00464-1     Document Type: Article

References (12)

1. Gani M.S.J. Cement and Concrete. 1997;Chapman & Hall, London.
2. Gartner E.M., Gaidis J.M. Hydration mechanisms, I. Skalny J. Materials Science of Concrete. vol. I:1989;95-125 American Ceramic Society, Westerville.
3. Stav E., Bentur A. Characterization of the hydration process of calcium sulphate hemihydrate by simultaneous evaluation of chemical and physical parameters. Adv. Cem. Res. 7:1995;113-116.
4. Aylward G., Findlay T. S I Chemical Data. 1994;Wiley, Brisbane.
5. Solberg C., Hansen S. Crystallisation and morphology of gypsum studied by synchrotron X-ray diffraction and scanning electron microscopy. Proc. Int. Conf. Cem. Microsc., 21st. 1999;238-245.
6. De Keyser W.L., Tenoutasse N. The hydration of the ferrite phase of cements. Proc. 5th Int. Symp. Chem. Cem. vol. 2:1969;379-386 Cement Association of Japan, Tokyo. supplementary paper II-120.
7. Moisset J. Plaster setting modifiers. Proc. 16th Eurogypsum Congr., Association of European Gypsum Industries, Brussels. 1985;1-27. paper 1.
8. Coughlin J.P., Conway K.C., Koehler M.F., Barry D.F. Rep. Invest. - U.S., Bur. Mines. 5477:1959;1-23.
9. Stability constants of metal-ion complexes, Special publication no 17. The Chemical Society, London, 1964.
10. 2S in the presence of a calcium complexing admixture (EDTA). Cem. Concr. Res. 13:1983;391-400.
11. Thomas N.L., Birchall J.D. The retarding action of sugars on cement. Cem. Concr. Res. 13:1983;830-842.
12. Beretka J., van der Touw J.W. Hydration kinetics of calcium sulphate hemihydrate: A comparison of models. J. Chem. Technol. Biotechnol. 44:1989;19-30.