INFLUENCE OF MIXTURE PROPORTIONS AND CURING CONDITIONS ON COMPRESSIVE STRENGTH OF HIGH-PERFORMANCE CONCRETE

The objective of this paper is to study the influence of the mixture proportions and curing conditions on the development, with time, of the compressive strength of high-performance concrete (HPC) by methods of experimental design. The statistical relationships obtained in this work can be used for predicting the strength of HPC with different water-binder ratios (w/b) and different contents of silica fume (SF) incorporated in the mixture. The statistical relationships between the compressive strengths of HPC, and w/b, SF replacement, and concrete age are determined. It is sometimes observed that the compressive strength of HPC attains a maximum value that corresponds to a certain optimum percentage of SF. This optimum depends on the w/b, concrete age, and curing conditions. Similarly, it is found that the compressive strength of HPC starts to increase considerably when the w/b becomes lower than a certain value. Nomograms for the prediction of compressive strength of HPC depending on w/b, SF replacement, and concrete age are presented. This method for establishing nomograms with a minimum amount of testing can be a working tool for practicing engineers. The expected strength can be predicted easily, starting from the known w/b, moving through the given SF content, and finishing with the desired age of the concrete. Finally, the suggested nomograms can also be used for choosing the dosage of SF and w/b to achieve a specific compressive strength of HPC at a certain age.

Language

  • English

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Filing Info

  • Accession Number: 00792318
  • Record Type: Publication
  • Contract Numbers: CMS-9413725
  • Files: TRIS
  • Created Date: May 11 2001 12:00AM