Effect of ZnO on the formation and coexistence temperature range of alite and calcium sulphoaluminate

Suhua Ma, Xiaodong Shen, Yeping Huang, Xueping Gong, Baixi Zhong

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2 Scopus citations

Abstract

The influence of ZnO on the formation of minerals and the temperature range for the coexistence of C4A3S̄ and alite in clinker containing calcium sulphoaluminate (4CaO·3Al2O3·CaSO4, C4A3S̄) was investigated by means of differential scanning calorimetry, X-ray diffraction and chemical analysis. The results show that after 1% (in mass) ZnO was added, the temperature for the formation of tricalcium silicate (alite) in the clinker decreases, and promoting the formation of C4A3S̄ at low temperatures. At 1300°C, the mass content of alite in the samples with 1.0% ZnO reached 59.23%, which was 14.76% more than that of the sample without ZnO. The temperature range for the coexistence of C4A3S̄ and alite also increases to 50°C.

Original languageEnglish
Pages (from-to)1392-1396
Number of pages5
JournalKuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society
Volume34
Issue number11
StatePublished - Nov 2006

Keywords

  • Alite
  • Calcium sulphoaluminate
  • Coexistence
  • Temperature
  • Zinc oxide

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