Quicklime is a mixture of pieces of different sizes formed after coarse grinding of the fried product. According to its chemical composition, it is a mixture of calcium and magnesium oxides, the main composition of which is CaO. In small quantities, it may contain undecomposed calcium carbonate, as well as silicates, aluminates and ferrites of calcium and magnesium, formed during the interaction of clay and quartz sand with calcium and magnesium oxides. Quicklime ground lime is a powder product of fine grinding of lump lime. The formulation of the bitumen-replacing mixture consists of the following components, such as oil sludge, gossypol resin, quicklime and technical sulfur. Oil sludge is the most significant waste of the oil industry in terms of mass. A waste disposal methodology towards obtaining a bitumen-replacing mixture for the use of insulating and roofing coatings was created. According to the results, comparative tests of pilot batches of building bitumen -replacing mixture in terms of physical and mechanical characteristics in accordance with State standards 6617-76 showed that almost all 4 experimental batches of building bitumen -replacing mixture gave good performance. However, the experimental batch #4 changed stability and increased bitumen brittleness when 4% quicklime was added. After the test, the experimental batch #3 received good indicators of stability and brittleness.