EXPERIMENTAL STUDY OF FLEXURAL STRENGTH OF REINFORCED CONCRETE BEAM INCORPORATING ULTRAFINE SLAG

摘要

There have been enormous researches going on the use and utilization of industrial, agriculturaland 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,blastfurnaceslag, rise husk ash etc. There has been increase in the consumption of mineral admixture bycement and concrete industries. This rate is expected to increase day by day. The presence of mineraladmixture in concrete is known to impart significant improvement in workability and durability inconcrete. The present paper involves the use of mineral admixture ‘ultrafine slag” as a cementitousmaterial for cement and to evaluate the threshold limit of replacement of cement. Main aim of this workis 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 singlesource is used in this investigation. The properties of cement tested as per IS4031:1988 and found toconform various specifications of IS12269:1987. Locally available river sand is used as fine aggregate andalso its specific gravity and fineness is determined. The addition of alccofine shows an early strengthgaining properties with increase flexural strength of concrete.