The effect of fly ash and limestone fillers on the viscosity and compressive strength of self-compacting repair mortars

FELEKOĞLU B., Tosun K., Baradan B., Altun A., UYULGAN B.

CEMENT AND CONCRETE RESEARCH, vol.36, no.9, pp.1719-1726, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 9
  • Publication Date: 2006
  • Doi Number: 10.1016/j.cemconres.2006.04.002
  • Journal Name: CEMENT AND CONCRETE RESEARCH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1719-1726
  • Keywords: admixture, cement paste, rheology, particle size distribution, compressive strength, RHEOLOGICAL PROPERTIES, CEMENT PASTES, CONCRETE
  • Dokuz Eylül University Affiliated: Yes

Abstract

Today, self-compacting mortars are preferred for repair purposes due to the application easiness and mechanical advantages. However, for self-compactability, the paste phase must meet some certain criteria at fresh state. The cement as well as the ingredients of the paste, powders with cementitious, pozzolanic or inert nature and plasticizing chemical admixtures should be carefully chosen in order to obtain a suitable paste composition to enrich the granular skeleton of the mix. The physical properties of powders (shape, surface morphology, fineness, particle size distribution, particle packing) and physico-chemical (time-dependent hydration reactions, zeta potentials) interactions between cement powder and plasticizer should be taken into consideration. All these parameters affect the performance of fresh paste in different manners. There is no universally accepted agreement on the effect of these factors due to the complexity of combined action; thus, it is hard to make a generalization.