Road organo-mineral mixtures based on oil sludge
Nowadays the development and implementation of modern construction technologies using oil wastes is gaining importance in road construction. Most of these wastes are stored in lagoons, which occupy vast territories, pollute the atmosphere, groundwater, soil and harm the environment. The purpose of the study is the development of organo-mineral mixtures composition based on oil sludge and technology for road construction with their application. The experimental research methods include the determination of strength, water resistance, water saturation, and swelling indicators of materials of various compositions. We also established optimal limits for factors variation that ensure the required reliability of the results. As a result of experimental studies we established that the optimal content of solid oil sludge in the composition of the developed materials is 30%, crushed stone –70% and the content of Portland cement is 6%. Physical and mechanical properties of the organic-mineral mixture based on oil sludge comply with regulatory requirements. During experimental and industrial implementation of the research results on4 experimental road sections we developed road pavement base construction technology of organo-mineral mixture based on oil sludge. It is performed by commercially available road-building machines with leading mechanisms recycler using the method called “mixing on the road”. We developed the operation schedule of oil sludge preliminary preparation at the special plant. Prepared oil sludge is a secondary raw product for road construction materials that is uniform in colour, grain composition, mass fraction of water and oil. Suggested modern technology for road pavement base construction allows making the oil sludge processing cycle absolutely complete and eliminates the formation of industrial by-products. This is an integral part of natural resources rational use and saving in material resources consumption. Technology application also contributes to the environment ecological state improvement in the areas of oil production and refining.