Production of rubber bitumen by blending of bitumen with crumb rubber from crumb tires is not just a waste treating method, but a possible solution for improving the durability of asphalt pavements compared to roads made of conventional bitumen. The following advantages are usually emphasised: improved durability, longer life time, lower life cycle / maintenance cost, increased permanent deformation resistance, traffic noise reduction effect. MOL together with University of Pannonia developed a new, patented production method (HU226481), which is capable to produce chemically stabilised rubber bitumen (CSRB). Asphalt tests have proved that the performance of CSRB is comparable to high quality polymer modified bitumen. Experience attracts attention to the fact that appearance of a binder of such quality is required in the future since it significantly supports sustainability and quality of road network. In 2010 MOL won a HuF 128 million research grant, partly supported by the EU and Hun-gary. Main parts of the supported project are • Implementation of new technology in Zala Refinery (prototype plant) • R&D work for finalisation of technology • Test road construction and evaluation of the road quality • Marketing support of product sales. Solid waste management has gained a lot of attention to the research community now-a- days. Out of the various solid waste, accumulated waste tires, has become a problem of interest because of its non- biodegradable nature. Road network is important to the economic development, social integration and trade of a country. Inadequate transportation facilities could have an effect on socio-economic and cultural development of a country. Stone Matrix Asphalt having good stability, strength and maintenance of the smooth surface of the road & other structures. Stone Matrix Asphalt mix is prepared by blending of course and fine aggregates. Study on road in india indicated increased the volume of traffic as a result huge development of road is required. The SMA mixture is used to restrain the distresses and provide better durability in the bituminous pavements. Aggregate gradation was taken as per MORTH specification for SMA mix. Study resulted that optimum bitumen content for samples prepared by mix of 5% crumb rubber (Tyre waste). Mixing of crumb rubber with 5% waste in SMA mix was observed cost effective & economical. Here maximum stability obtained is 12.72 kN This value as compared to other fibers is a little higher. Study of test result resulted higher stability, strength & durability of roads.
BC, SMA, Marshal Stability, VMA, VFA, Crumb Rubber, CSRB
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