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Studies on the Modifications of Asphalt Binder Using Some Selected Polymers

U. M. Ibeagi, S. O. E. Okereke, O. C. Okpareke and P. O. Ukoha

Increase in pavement distress has prompted the study and investigation of the use of polymers as asphalt cement modifiers. It was observed that rubber-related polymers are most suitable and they improved on the resilience, toughness, and reduced temperature susceptibility of the asphalt. Development of cracks, rutting and potholes were reduced, and water-proofing effect on the pavement was improved. Compatibility of asphalt mix, a major factor in the determination of extent of modification was enhanced by incorporation of catalysts, and application of mechanical method.