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The recycling of rubber waste, polyvinyl chloride (PVC), but also fly ash (FA) resulting from the burning of coal in thermal power plants for the production of electricity, represents an activity that can contribute to sustainable development considering the 3 components (economic, social and environmental). The problem of reducing waste is constantly raised, and in the conditions where there is the possibility that it can be incorporated into the structure of new products, we can speak of a sustainable economic development. Although the issue of replacing coal-fired power plants with the use of greener, sustainable energy sources such as wind power, photovoltaic panels and biogas has been raised in the last decade, there has recently been a heavy reliance on coal-fired power plants around the world for meet the growing demand for energy. Given that these power plants have used coal for many years to produce electricity, the ash stocks stored in specially arranged dumps are very large, and therefore the challenge of using this waste to manufacture new materials with engineering applicability arises. [ABSTRACT FROM AUTHOR]

In the current background of excessive usage of plastic and rubber materials, hardly degradable, when the pollution level and global warming problems due to industrialization are rising, the world turns to new materials, especially composites, with a low impact on the environment, and to using waste formed from other fabrication processes and which after the termination of their life cycle to be easily recycled and reused in the manufacturing of new products with very good qualities. [ABSTRACT FROM AUTHOR]

Chain transmission systems are mechanical systems that can transform rotational motion into translational motion. They have many advantages, such as the relatively low price compared to other transmission systems. They are easy to maintain, have a long service life and can be used for various applications, such as: industrial conveyors, military applications, the pharmaceutical industry and the automotive industry. [ABSTRACT FROM AUTHOR]