Effect of SO3 content and fineness on the rate of delayed ettringite formation in heat cured Portland cement mortars

Tosun K.

CEMENT & CONCRETE COMPOSITES, vol.28, no.9, pp.761-772, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 9
  • Publication Date: 2006
  • Doi Number: 10.1016/j.cemconcomp.2006.06.003
  • Journal Name: CEMENT & CONCRETE COMPOSITES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.761-772
  • Keywords: delayed ettringite formation, blaine fineness, SO3 content, expansion, early strength, HYDRATION CHARACTERISTICS, EXPANSION, AGGREGATE, PASTES
  • Dokuz Eylül University Affiliated: No

Abstract

This paper presents the findings of a long-term study on the expansion rate and microstructure of heat cured cement mortars. For this purpose, cements with different fineness and SO3 contents were produced by using the same clinker. Different mortar specimens were prepared and subjected to heat curing. Length changes of specimens were measured within a period of 540 days. The microstructures of young (2 day after heat curing) and old (1.5 years after heat curing) specimens were also investigated by SEM and EDS analysis. The expansion rates and microstructures observed were compared with the control specimens.