Detection of X-ray diffraction peaks of CaSO4·½H2O and CaSO4·2H 2O was used to determine actual amounts of gypsum products and reactants at any time during setting. Experiments were then conducted to measure rates of gypsum product formation during setting of dental plaster and stone mixed at various WlP ratios.
Get full access to this article
View all access options for this article.
References
1.
Standards Association of Australia, Specification No. T5, Australian Dental Association, 1951.
2.
Mahler, D.B. : Hardness and Flow Properties of Gypsum Materials , J Pros Dent1:188, 1951.
3.
Skinner, E.W. , and Phillips, R.W.: The Science of Dental Materials, ed 5, Philadelphia : W. B. Saunders Co., 1960, p 37.
4.
American Society for Testing Materials: X-Ray Powder Data File, Card No. 6-0226, 6-0046, 6-0047, and 14-453 , Philadelphia: ASTM Publications , 1967.
