Abstract: “Due to environmental concerns, government agencies globally have enforced stringent laws for disposal of industrial waste. This has an immense pressure on industries to dispose and recycle their waste in an ecologically safe manner. Similarly, in Oman, the disposal of spent catalyst and quarry dust is a major concern to oil refineries and stone quarries respectively. In the present project work experimental investigation is carried out to see the possibility of locally available spent catalyst and quarry dust in the development of Self Compacting Concrete thereby reducing impact on the environment. Four mixes, such as Mix-A, Mix-B, Mix-C, and Mix-D with Water to Powder ratio of 0.8, 0.9, 1.0, 1.10 respectively, with constant Water to Cement ratio of 0.45 is used to determine the initial mix composition as per the European guidelines. Laboratory investigation was carried out in the Construction Material Testing Laboratory at Caledonian College of Engineering, Oman. Laboratory investigat”

Keywords: Self Compacting Concrete, Spent Catalyst, Quarry Dust, Superplasticiser, Strength