Mechanical and Thermal Properties of Self-Compacting Concrete Containing Dimensional Limestone Slurry Waste

Abstract

Abstract Dimensional Limestone Slurry (DLSS) waste is the sludge or slurry that is produced during grinding, polishing, and cutting of limestone. Water is used to cool and lubricate cutting blades and polishing tools, mixing stone particles with water to generate a slurry. The possibility of utilizing DLSS waste as a primary constituent for concrete production and the manufacture of construction materials such as tiles, bricks, and paving blocks. Through the process of recycling slurry waste, there is a reduction in the demand for natural resources and a reduction in the environmental consequences related to conventional construction materials. This paper reports the findings of an investigation of the fresh properties, hardened states, thermal properties like thermal conductivity, thermal diffusivity, and Scanning Electron Microscope (SEM) of self-compacting concrete (SCC) incorporating DLSS. Fine aggregate was replaced by DLSS from 0% to 100% with a 15% increase up to 60%, and from 80% to 100% with a 20% increase. Seven different SCC mixtures were cast with a cement content of 550 kg/m3 and a water-cement ratio of 0.33 by weight. The inclusion of DLSS at a maximum of 30% resulted in favorable parameters in self-compacting concrete (SCC) mixtures.