ДОСЛІДЖЕННЯ СПОСОБІВ ПОВТОРНОГО ВИКОРИСТАННЯ ДОРОЖНЬО-БУДІВЕЛЬНИХ МАТЕРІАЛІВ ПРИ РЕМОНТІ ДОРОЖНІХ ОДЯГІВ КАПІТАЛЬНОГО ТИПУ

Abstract

Introduction. The paper considers the issues of increasing of road construction materials reuse when repairing of major type pavements, by simultaneous use of hot and cold recycling technologies (in the plant and on the road). Problem statement. At many road construction objects, especially when repairing roads of state importance, designing engineers meet the problem of the need in a significant amount of bituminous materials. There is a question of how to provide such a quantity of these materials and do it economically efficient. Research has shown that it is necessary to use hot and cold recycling technologies economically efficiently. Purpose. Searching for the possibility of arranging of foundation layers, by simultaneously applying of hot and cold recycling technologies. Research methods. Analytical and experimental with the use of computer simulation of a multilayer structure. Results. It has been determined that the upper layers of the foundation can be strengthened by asphalt concrete manufacturing by hot recycling technology (in the plant), and the lower layers by cold recycling mixtures using different types of binders and manufacturing methods (in the plant and on the road). Conclusions. The conducted research allowed to confirm the thesis about the effectiveness of the solution to restore the strength of the capital-type road pavement. The obtained solution will reduce the cost of pavement repair and solve the issue of bituminous materials utilization, which will positively affect the environmental safety of the region.