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The influence of microfillers on enhancement of concrete strength

✍ Scribed by A. Goldman; A. Bentur

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
657 KB
Volume
23
Category
Article
ISSN
0008-8846

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✦ Synopsis

The research presented in this paper was intended to clarify the nature of concrete strengthening in the presence of silica fume.

For this purpose, compressive strength development of high strength concrete and its paste-matrix was investigated. Carbon black was introduced as an alternative microflller to silica fume. The results indicated that carbon black was effective in modifying the basic concrete-matrix strength relationship to an extent similar to that obtained by silica fume. It is suggested that the mechanism by which silica fume affects the concrete behaviour is of a physical origin and is based on microfiller effect, prior to its action as a pozzolanic material. The microfiller effect is of greater significance to strength enhancement.

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