Effective Utilization of Industrial Wastes in Self Compacting Concrete for Environmental Protection

An experimental study on the workability of self-compacting concrete (SCC) with three mineral admixtures which are obtained as waste products from industries were studied. The materials used for the study are fly ash (FA), Silica fume (SF), rice husk ash (RHA) along with OPC cement. Self compacting concrete is a special concrete, which can be placed and compacted under its own weight with little or no vibration effect, and which is at the same time cohesive enough to be handled without segregation or bleeding. The work involves four types of mixes, the first consisting of fly ash, the second uses FA and silica fume the third uses a mixture of FA and rice husk ash and the fourth, a combination of fly ash, silica fume and rice husk ash. After each mix proportion was arrived, its workability was checked and cubes were cast, cured and strength check made. The results show that SCC with 10% of SF and 20% fly ash combination gives higher values of compressive strength than those with 30% replacement of FA.