Portland Limestone Cement Part 1-Preparation of Cements


TOSUN FELEKOĞLU K., FELEKOĞLU B., Baradan B., Altun I. A.

TEKNIK DERGI, vol.20, no.3, pp.4717-4736, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 20 Issue: 3
  • Publication Date: 2009
  • Journal Name: TEKNIK DERGI
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.4717-4736
  • Keywords: limestone cement, grinding, fineness, compressive strength, HYDRATION, FILLER, CONCRETE
  • Dokuz Eylül University Affiliated: Yes

Abstract

This paper is the first part of a research project which was supported by TUBITAK titled "Determination of Optimum Limestone Content in Portland Limestone Cement Production from the View Point of Mechanical Performance and Sulfate Originated Durability Problems". In this stage, blended cements incorporating different amounts of limestone powders from 5% to 40% were prepared. The problems observed in the preparation stage of limestone blended cements and the effects of limestone replacement on the physical and mechanical properties were investigated. Increasing the limestone replacement ratio resulted in a wider particle size distribution. In contrast with the increases in Blaine values, fineness (residue at 32 mu m) values of cements have also increased. Mortars had a sticky and cohesive consistency. Besides, by increasing the limestone content, unit weights decreased, water absorption values increased, and compressive strength values of mortars decreased at all ages.