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Rubber from the worn tyres is associated with a useless material, strenuous for environment, whose most popular recovery method until recently was storage (currently forbidden by law). The adoption and dissemination of new ecological standards, created not only by the European and national legislation, but also developing as a result of expanding ecological consciousness, forces the necessity of seeking efficient methods of utilization of the vehicle tyres. The exemplary solution for the problem of tyres withdrawn from the operation, presented in the article, is using them in the grinded form as a substitute for the natural aggregate for the production of normal concrete. The article presents the results of the tests of selected properties of the modified normal concrete, upon the basis of which it has been found that the rubber causes decrease of compression strength, concrete weight, limits water absorbability, and does not influence significantly the physical and chemical phenomena accompanying the composite structure formation.

ASSESSMENT OF SELECTED PROPERTIES OF NORMAL CONCRETES WITH THE GRINDED RUBBER FROM WORN OUT VEHICLE TYRES