Abstract In this study, the thermomechanical behaviour of bituminous mixtures produced with CR by dry process was evaluated. Two bituminous mixtures were produced and tested: a reference one without CR and a second one with 3% of CR on the mixture weight. The used CR had a continuous 3/6 mm grain size distribution. Complex modulus was determined using tension/compression tests with sinusoidal loading, at nine temperatures from −25 °C to 50 °C and eight frequencies from 0.003 to 10 Hz with an imposed strain amplitude of 50 μm/m. For both mixtures, Time-Temperature Superposition Principle was validated. At high frequency/low temperatures, lower values of norm of complex modulus were found for the mixture containing CR. Tensile strength was determined using direct tensile tests on two samples at 10 °C and 3.125 × 10−2 %/min imposed strain rate.
Influence of Crumb Rubber Added by Dry Process on Linear Viscoelastic Properties and Tensile Strength of Bituminous Mixtures
Proceedings of the 5th International Symposium on Asphalt Pavements & Environment (APE) ; 3 ; 174-182
Lecture Notes in Civil Engineering ; 48 , 3
2019-08-30
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Crumb rubber , Dry process , Bituminous mixture , Linear viscoelastic behaviour , Complex modulus , Tensile strength Engineering , Geoengineering, Foundations, Hydraulics , Characterization and Evaluation of Materials , Geotechnical Engineering & Applied Earth Sciences , Energy Harvesting , Surveying
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