مهندسی نساجی گیلان:. گیل تکس

سایت تخصصی نساجی و پوشاک

مهندسی نساجی گیلان:. گیل تکس

سایت تخصصی نساجی و پوشاک

Physical and Mechanical Properties of Bitumen Reinforced with Po

Physical and Mechanical Properties of Bitumen Reinforced with Poly Propylene Fibers
Sayyed MAHDI Abtahi, Mohammad Sheikhzadeh, Reza Alipour ،and Sayyed MAHDI Hejazi

Abstract
 Asphalt Concrete (AC), a mixture of bitumen and aggregates, is a sensitive structure compared with other civil configurations. So, Scientists and engineers are constantly trying to improve the performance of asphalt pavements. Modification of the asphalt binder, bitumen, is one approach taken to improve pavement performance. In this paper, the importance of fiber reinforced bitumen structures, especially in pavement engineering, was explained. In this way, Polypropylene (PP) fiber modified bitumen samples were fabricated with different conditions included: three percentages of PP fibers (0.25, 0.5 and 1 by the total weight of the mixture), two types of bitumen i.e. 60/70 and 85/100, mixing temperatures of 135 and 165 0C, and finally the lengths of 6 and 12 mm. The tests comprised ductility, penetration and softening point. Wholly and by the experimental results, it was found that fiber reinforced bitumen structures show less susceptibility to temperature, by increasing softening point, and daily traffic load, by decreasing penetration and ductility compared with the neat (unmodified) bitumen.
Keywords: Bitumen, Reinforcement, Poly Propylene Fibres, and Ductility.


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