Effect of fineness and particle size distribution of granulated blast-furnace slag on the hydraulic reactivity in cement systems

  • Authors: P. Z. Wang 1 ; R. Trettin 1 ; V. Rudert 2
  • Source: Advances in Cement Research, Volume 17, Issue 4, pages 161 –167 , ISSN: 0951-7197, E-ISSN: 1751-7605

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This paper presents the results of an investigation into the influence of fineness and particle size distribution of granulated blast-furnace slag (GBFS) on its hydraulic reactivity in cement systems. The GBFS was separated into different fineness classes by grinding and/or air separation. The particle size distributions were determined by laser analysis and the specific surface by means of nitrogen adsorption Brunauer, Emmett and Taylor (BET) equation. The fineness affects the hydraulic reactivity of the GBFS considerably. In the case of a grain size. 20 >m, the reactivity is greatly decreased. The fraction, 5 m in increasing the strength up to 7 days is of minor relevance. In order to obtain an effect on strength increasing up to 28 days the GBFS should be ground to, 40

  • Document Type: Research Article
  • DOI: 10.1680/adcr.2005.17.4.161
  • Affiliations: 1: * Institute for Building and Material Chemistry, University of Siegen D-57076 Siegen, Germany; 2: † Wilhelm Dyckerhoff Institute for Building Material Technology Germany
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