DEVELOPMENT OF GENERALISED STRENGTH MODELS INVOLVING NON-DIMENSIONAL PARAMETERS FOR SILICA FUME CONCRETE
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Published:2002
S Bhanja, B Sengupta, 2002. "DEVELOPMENT OF GENERALISED STRENGTH MODELS INVOLVING NON-DIMENSIONAL PARAMETERS FOR SILICA FUME CONCRETE", Challenges of Concrete Construction: Volume 6, Concrete for Extreme Conditions: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9–11 September 2002, Ravindra K. Dhir, Michael J. McCarthy, Moray D. Newlands
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The present paper deals with mathematical models developed using statistical methods to predict the 28-day compressive strength of silica fume concrete. Extensive experimentation was carried out to determine the isolated effect of silica fume on concrete and analyzing the strength results of 32 concrete mixes performed over a wide range of water-binder ratios and silica fume replacement percentages, simplified relationships have been proposed. In the present investigation, silica fume-binder ratios ranged from 0.0 to 0.3 and water binder ratios from 0.26 to 0.42. The ratios of compressive strengths between silica fume and control concrete have been related to silica fume replacement percentage. The expressions, being derived with strength ratios and not with absolute values of strength, are independent of the specimen parameters and are applicable to all types of specimens. These simplified models might serve as useful guides for proportioning concrete mixes incorporating silica fume.
INTRODUCTION
EXPERIMENTAL PROGRAM
ANALYSIS OF RESULTS AND STATISTICAL MODELING
CONCLUSIONS
REFERENCES
