1) The document discusses using waste marble slurry in building works to protect the environment. Tests found that marble slurry can improve the physical and mechanical properties of soils and qualify them for use in the building sector.
2) Specifically, the author blended marble slurry with black cotton soil in varying proportions and tested the mixtures. Adding marble slurry decreased the liquid limit and plasticity index of the soil mixtures, while increasing the shrinkage limit.
3) The study concludes that using marble slurry waste in soil stabilization and construction can help reduce environmental pollution from dumping waste, while providing a useful construction material.