Mix proportioning of high performance concrete

High performance concrete (HPC) is that concrete which meets special performance and uniformity requirements that cannot always be achieved by conventional materials, normal mixing, placing and curing practices. Special performance requirements using conventional materials can be achieved only by ad...

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Bibliographic Details
Published in:Cement & concrete composites 2001-02, Vol.23 (1), p.71-80
Main Authors: Bharatkumar, B.H, Narayanan, R, Raghuprasad, B.K, Ramachandramurthy, D.S
Format: Article
Language:English
Subjects:
Cement replacement material
Composition effects
Compounding
Compressive strength
Concrete mix proportion
Concretes
Durability
Effective water/binder ratio
Efficiency factor
Experimental results
Formulations
High performance concrete
Mineral admixtures
Minimum cement content
Mix design procedure
Optimum water content
Superplasticiser
Water-cement ratio
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Summary:High performance concrete (HPC) is that concrete which meets special performance and uniformity requirements that cannot always be achieved by conventional materials, normal mixing, placing and curing practices. Special performance requirements using conventional materials can be achieved only by adopting low w/c, which necessitates use of high cement content. But judicious choice of chemical and mineral admixtures can reduce the cement content and this results in economical HPC. However, the effect of a mineral admixture on the strength of concrete varies significantly with its properties and replacement levels. Mix proportioning methods of normal concrete cannot adequately account for the large variations in the properties of ingredients. This paper presents a modified mix design procedure, which utilises optimum water content and the efficiency factor of mineral admixture. Results of the experimental investigations on mixes using the modified mix design are presented.
ISSN:0958-9465
1873-393X
DOI:10.1016/S0958-9465(00)00071-8