Properties of Cold-Bonded and Sintered Aggregate Using Washing Aggregate Sludge and Their Incorporation in Concrete: A Promising Material

The aggregate makes up about 65–75% of the total volume concrete and use artificial aggregates manufactured from waste by-product materials, as an alternative to natural aggregate, has attracted considerable research interest. Washing sludge (WAS) is obtained a during process washing aggregates, which disposed or used landfill. utilization WAS major component manufacture remains unexplored. Therefore, focus been directed towards production cold-bonded sintered using their incorporation in concrete. fresh pellets were WAS, ground granulated blast furnace slag (GGBFS) ordinary Portland cement (OPC) kept laboratory conditions at 20 ± 2 °C 95 5% relative humidity obtain whereas GGBFS utilized by heating 1150 °C. properties characterized through physical, mechanical, chemical, microstructural analysis. Concrete specimens also produced introducing replacement with coarse aggregate. results showed that containing can be lower oven-dry density comparable mechanical efficiently utilize WAS.