CRUMB RUBBER MODIFIED BITUMEN FOR SURFACE COURSE OF FLEXIBLE PAVEMENT STRUCTURE

CIVIL ENGINEERING

The high traffic density in terms of commercial vehicles, overloading of trucks, aging of bitumen binder and adverse climate condition such as heavy rainfall, significant variation in delay and seasonal of the pavement have been responsible for early development of pavement distress resulting in pavement to provide expected service life with desired performance. Under such condition it is necessary to improve the strength characteristics of bituminous surface by adopting various alternatives like modifying the grade bitumen, aggregate gradation and mix proportions or by using various admixtures. So it was felt that a study can be done a utilization of modifier like crumb rubber which is easily available, very cheap and considered as waste material. The present indicates that the effect of crumb rubber by varying procedural parameters like modifier concentration, blending temperature and blending time for preparing the CRMB.

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