Very High Performance Concrete VHPC

Several authors propose the value of 0.22 as an optimum wic ratio (ACI 1998). In many published compositions of very high performance concrete (VHPC), wic ratio remains between 0.25 and 0.30 and between 0.30 and 0.35 for high performance concrete (HPC), probably for higher percentage of hydration of Portland cement. Also, lower dosages of snperplasticizer might be possible for required workability, and consequently, lower cost. 

The brittleness of high performance concrete (HPC) and very high performance concrete (VHPC) deserves more attention. Experimental results obtained by de Larrard and Malier (1992) on specimens made with three different concretes are given below as an example ... 

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