ISSN: 0149-6123
Page Count: 9

Blended Cement According to ENV 197 and Experiences in Germany
Harr, K
manager, Hcidelberger Zement AG,

Schmidt, M
Professor and director, Hcidelberger Zement AG,

Boeing, R
research scientist, Hcidelberger Zement AG,

Abstract

The European prestandard on common cements, ENV 197, Part 1 [1], differentiates 5 main types and 25 different varieties. Except for portland cement, all cements are composed of at least two or more main components: clinker, blastfurnace slag, natural or artificial pozzolans, fly ash, silica fume, burnt shale, and pulverized or interground limestone. The proportions differ from 5 to 95% (all percentages by mass) clinker. German experiences with high-quality portland-limestome cements and portland-fly ash-slag cements in concrete show some advantages in workability and the same favorable behavior in strength and durability.

Keywords:
European standard, blended cements, portland cement, fly ash, blastfurnace slag, silica fume, pozzolans, limestone, performance tests, durability, quality assurance

Paper ID: CCA10603J
DOI: 10.1520/CCA10603J
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