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Materiale Plastice
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Materiale Plastice (Mater. Plast.), Year 2015, Volume 52, Issue 3,





TRAIAN JUGANARU, MIHAELA BOMBOS, GABRIEL VASILIEVICI, DORIN BOMBOS Devulcanized Rubber for Bitumen Modification


Abstract:
Partial devulcanization of rubber crumb spent was performed in the presence of oxide nanoparticles. Nanoparticles on the basis of CaO and ZnO were prepared by dry grinding in a laboratory planetary mill and nanoparticles on the basis of Fe3O4 were obtained by precipitation. The distribution of particle sizes based calcium, zinc and iron were measured by dynamic light scattering. Devulcanization of the rubber crumb was carried out in a batch system at a temperature of 200°C and the sulfur content of rubber decreased more than 15 times after devulcanization. Homogeneity of bitumen, determined by fluorescence microscopy, was superior in case of modification with devulcanized rubber compared to the case of modification of bitumen with vulcanized rubber. Adhesiveness of bitumen road increases significantly after modification with desulfurized rubber compared to the case of bitumen modified with vulcanized rubber. Keywoords: waste, desulfurized rubber, bitumen modification, nanoparticles



Issue: 2015 Volume 52, Issue 3
Pages:
Publication date: 2015/9/30
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