Asphalt Component and Road Base

Mixing of ground scrap rubber in asphalt was used to resurface roads in 1972 [6]. Quite recently, an overview is presented of the state-of-the-art of the asphalt-rubber production technology, and factors influencing bitumen properties are discussed [12]. 

Mechanical properties of asphalt can be improved [16] by modification with some polymers, especially stirene-butadiene-stirene (SBS) tri-block copolymer. SBS/ asphalt blends are prepared via dynamic vulcanization. Recycled tire crumb rubber is incorporated as a major component in its multi-layer construction [17] for a stadium field-turf. 

Keeping environmental and economic factors in mind, it was envisaged in a review [18] that the disposal problem could be solved by incorporating ground waste rubber into virgin polymer matrices. At the end of 2001, the Asphalt Rubber Technology service has reported to be planning to use crumb rubber in several applications in the construction of its new research facility [19]. 

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