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Materials and Structures DOI 10.1617/s11527-013-0121-6 ORIGINAL ARTICLE Static mechanical properties of waste rests of recycled rubber and high quality recycled rubber from crumbed tyres used as aggregate in dry consistency concretes D. Flores-Medina • Nelson Flores Medina • ´ F. Hernandez-Olivares Received: 21 January 2013 / Accepted: 8 June 2013 RILEM 2013 Abstract The following research is focused on Keywords Tyres Rubber Fiber Textile Recycle establishing the differences in the re-use as aggregate in dry consistency concretes of two types of rubber obtained in the process of Tyre recycling, recycled rubber from tyres (RRT): granulated sizes (4–8 mm) 1 Introduction of high quality recycled rubber (HQRR) and the waste of the recycling process: steel and textile fibers with Annually a large amount of tyres accumulate around rubber tracks (waste from recycled rubber, WRR). landfills, becoming a problem for countries to control Both types were classified and added as aggregate in their storage, elimination or recycling. Historically the substitution of coarse aggregates from 20 to 100 % by storage of whole tyres in dumps has been a solution but volume. The physical and mechanical behavior of became dangerous with the risk of sanitary infections WRR in concretes was compared with reference by insects and rodents and risk of fire [ 1–3]. These concrete and series with HQRR for a future use in tyres have also been used for coastal fronts for precast concrete pieces. In both samples a reduction of protection, for erosion control along tidal or fluvial mechanical resistance occurs in proportion with the shorelines, for artificial reefs, etc. amounts of rubber of substi