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Influence of synthetic fibres on the properties of asphalt concrete produced at reduced temperature

Iwański M. M., Chomicz-Kowalska A.

Structure and Environment

2013

Vol. 5, no. 3

21--29

This paper presents the effects of synthetic fibers from car tire recycling on the properties of binder course asphalt concrete. The asphalt concrete was produced in conventional hot mix asphalt technology as well as in lowered temperatures as warm mix (WMA) and half-warm mix asphalt (HWMA). The aim of the research was to analyze the influence of fiber content and the production technique on the air void content, moisture resistance (ITSR), resistance to permanent deformation (WTS AIR), stiffness modulus at 20°C and fatigue resistance under indirect tension test. The performed analyses have proven the influence of synthetic fibers on the characteristics of asphalt concrete produced in WMA technology (with synthetic F-T wax modified bitumen) and HWMA technology (with foamed bitumen) to be significant.