Hydration, rheology, and strength of ordinary portland cement (OPC)-cement kiln dust (CKD)-slag binders

Kejin Wang*, Maria S. Konsta-Gdoutos, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

This study investigates the characteristics of a binder system containing cement kiln dust (CKD), blast-furnace slag, and ordinary portland cement (OPC). The system consists of 0 to 50% CKD and 0 to 75% slag replacement for Type I cement, with a total amount of supplementary cementitious materials equal to or less than 75%. The study evaluates the heat of hydration, rheological behavior, and flexural and compressive strengths of pastes and mortars made with these binders. It also examines the effects of binder proportions on concrete properties. Tests demonstrate that properly designed OPC-CKD-slag binders display properties comparable to pure OPC or an OPC-CKD blend. A CKD-slag specimen made without portland cement also displays satisfactory compressive and flexural strength. This indicates that alkalis released from CKD may activate slag hydration.

Original languageEnglish (US)
Pages (from-to)173-179
Number of pages7
JournalACI Materials Journal
Volume99
Issue number2
StatePublished - Mar 1 2002

Keywords

  • Blended cement
  • Heat of hydration
  • Rheology
  • Slag
  • Strength

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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