Utilization of citro- and desulphogypsum as set retarders in Portland cement


Ozkul M. H.

CEMENT AND CONCRETE RESEARCH, cilt.30, sa.11, ss.1755-1758, 2000 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Konu: 11
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1016/s0008-8846(00)00409-9
  • Dergi Adı: CEMENT AND CONCRETE RESEARCH
  • Sayfa Sayıları: ss.1755-1758

Özet

The utilization of citro- and desulphogypsum in the cement industry as set retarders was tested and compared with natural gypsum. Chemical gypsums were used in two different forms, powder and agglomerated under pressure. Setting times and volume stability of cement pastes, as well as compressive and flexural strengths of cement mortars were evaluated. A Student's t statistic was applied to test the equality of strength results at the ages of 3, 7, and 28 days. (C) 2000 Elsevier Science Ltd. All rights reserved.