Development of Ultra High Performance Concrete Using Relative Density Index Method for Particle Packing of Quinary Mix Paste System

Abstract

Ultra High Performance Concrete (UHPC) has under been study for a considerable amount of time now. Many researchers have also yielded good strengths since the advent of this developing composite material. Past efforts of improving the concrete performance yields that, mineral additives can greatly alter the characteristics of concrete and give surprisingly higher strength and durability results. In this study mineral additives like ultrafine slag, metakaolin, rice husk ash and fly ash will be used and concrete will be assessed for its various properties and ideal mix proportion will be figured out. The main objective of this study is to prepare the high performance concrete having the good mechanical properties by applying the concept of particle packing. The particle packing has a great influence on the properties of concrete by improving the density of the structure. More is the packing of the materials lesser will be the voids and lesser sources for the origin and propagation of the cracks. Second most important phase of the concrete which greatly influences the properties of the concrete is the interfacial transition zone (ITZ). In the normal concrete ITZ is the potential source for the origin of cracks in the structure and it is also preventing the efficient load transfer in the matrix due to high porosity. So in order to deal with this fault, the coarse aggregates need to be eliminated from the scenario.