Özet:

Recycling of end-of-life tires is a global problem that needs a solution. Storing and preserving these tires is a situation that delays facing potential problems instead of solving the problem. In this context, recycling of waste tires without harming the environment and at low costs has been the focus of many researchers. Since the beginning of the 21st century, the possibility of these tires to be granulated to the size of aggregate employed in concrete production and then to be used instead of natural aggregate in the manufacturing of the concrete has been the subject of research by scientists studying in this field. In the literature, the number of studies conducted on this subject has been increasing day by day. This study basically aims to compile the latest developments in this field and bring them to the literature. As it is known, the properties of concrete both in the fresh state and hardened state have a wide range. In order to present the study in accordance with its scope, the influence of tire aggregates obtained from waste tires on the fresh properties of concrete like workability and rheological behavior and the hardened properties such as the compressive and tensile strengths, elastic modulus, fracture parameters, and wear resistance were investigated. As a consequence of the findings achieved from the compiled information, it can be concluded that the incorporation of rubber aggregate in concrete production has generally adverse influences on the mentioned properties of concrete. In addition, the degree of affection of these properties is related to the shape, size, surface properties, and level of substitution of the rubber aggregate. Therefore, although the use of such concretes for structural purposes is not recommended, it is emphasized that it will be a good recycling alternative to use in non-structural like urban landscape structures, road shoulder side borders, keystones, surface coatings, etc.

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