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Structure and Properties of Portland Cement Clinker Doped with Zinc Oxide

1980; Wiley; Volume: 63; Issue: 1-2 Linguagem: Inglês

10.1111/j.1151-2916.1980.tb10638.x

1551-2916

I. Odler, Otto Schmidt,

Magnesium Oxide Properties and Applications

ZnO added to the raw meal accelerates the rate of portland clinker formation. Due to ZnO doping, the amount of alite and C 2 (AF) formed increases at the expense of belite and C 3 A. The ZnO is preferentially taken up by the interstitial phase. The initial rate of tricalcium silicate hydration is retarded and the formation of ettringite is moderately accelerated in cements made from ZnO‐doped clinkers. The set time of these cements is gradually prolonged and their strength development retarded with increasing degrees of ZnO doping.