High Performance Concrete (HPC) with improved properties has been developed by obtaining the maximum density of the matrix. Mathematical models developed by J.E. Funk and D.R. Dinger, are used to determine the particle size distribution to achieve the densest packing of particles in the matrix. Once the particle size distribution of each material is established, these models can be applied to determine the optimal mix. By using these models, mixes with packing densities above 90% can be obtained. These mixes will generally contain a lower amount of cement, but will have enhanced mechanical properties like higher compressive strength, improved durability, etc. In addition, using supplementary cementitious materials, i.e. fly ash or ground-granulated blast-furnace slag, to replace portions of the cement will further reduce the amount of cement. Therefore, it is possible to produce a self-consolidating HPC mix with 15 weight % cement and compressive strengths above 17 ksi. This paper discusses the impact of particle size optimization on HPC mixes.
High-performance concrete (HPC) overlays have been used increasingly as an effective and economical method for bridge decks in Iowa and other states. ...
"The term Ultra-High Performance Concrete (UHPC) refers to a relatively new class of advanced cementitiouscomposite materials whose mechanical and dur...
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