FraMCoS 8 2013 Toledo, Spain

Uniaxial Fracture Energy of Waste Tyre Rubber Concrete

This paper reports on an experimental study of the uniaxial fracture energy of concrete reinforced with waste tyre rubber granulates of different size and with waste tyre chips containing steel belt wires. The concrete mixture has been prepared to provide…

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Year 2013
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Abstract

This paper reports on an experimental study of the uniaxial fracture energy of concrete reinforced with waste tyre rubber granulates of different size and with waste tyre chips containing steel belt wires. The concrete mixture has been prepared to provide a concrete class of C25/30 according to Eurocode 2 normally used for typical slab-on-ground applications. Three different rubbers granulate: 0.4-0.7 mm, 2-3mm and 3-6mm and tyre chips of a size up to 20mm have been used. The dosage in the concrete matrix was kept 3.2% by volume. Cubic concrete specimens of dimensions 150×150×130 mm, with a 30 mm long and 3 mm wide starter notch cut at the top were uniaxially tested with the wedge splitting test method according to Tschegg. The addition of waste tyre particles was found to improve the post-crack ductility and fracture energy of plane concrete. The most distinctive increase was observed by concretes with waste tyre chips.