Experimental Studies of Strength and Durability Analysis of Concrete Incorporating Ultrafine Slag

Abstract

There have been enormous researches going on the use and utilization of industrial, agricultural and thermoelectric plant residues in the production of concrete. Production of high performance concrete (HPC) plays an important role with different pozzolanic materials like fly ash, condensed silica fume, blast furnace slag, rise husk ash etc. There has been increase in the consumption of mineral admixture by cement and concrete industries. This rate is expected to increase day by day. The presence of mineral admixture in concrete is known to impart significant improvement in workability and durability in concrete. The present study involves the use of mineral admixture ultrafine slag as a cementitous material for cement and to evaluate the threshold limit of replacement of cement. Main aim of this work is to evaluate the flexural strength of High strength concrete by partial replacement of cement (0, 8, 10, 12, and 14%) with ultra-fine slag (Alccofine 1203) for M60 grade of concrete. OPC of 43grade from single source is used in this investigation. The addition of alccofine shows an early strength gaining properties with increase flexural strength of concrete. In the last millennium concrete had demanding requirements both in technical performance wise and economy wise and yet greatly varied in application from architectural masterpieces to the simplest of utilities. This study presents the results of an experimental investigation carried out to evaluate the flexural strength of concrete incorporated with ultrafine slag (alccofine) by studying the effects of different proportions of ultrafine slag in the mix and to find optimum dose of alccofine content in the mix. The concrete specimens were cured on normal moist curing under elevated atmospheric temperature for better heat of hydration.