Novel Modified Recycled Mastic for Demanding and Sustainable Asphalt Mixtures

Martinho, Fernando J. B.; Picado-Santos, Luís; Lemos, F.

doi:10.1007/978-3-030-46455-4_180

Cited by 1 publication

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“…The η* of PMB + wax (which also includes functional additives) at temperatures below 90 • C (essential for their mechanical performance in service), was the largest of the three binders. The functional additives added induced an appropriate contribution to the permanent deformation resistance without impairing the fatigue strength of the bituminous mixtures (which was later evaluated in flexion-tensile tests on four-point bending equipment-4PB) [32,60]. also includes functional additives) at temperatures below 90 °C (essential for th chanical performance in service), was the largest of the three binders.…”

Section: Dynamic Viscosity (η)mentioning

confidence: 99%

Using Plastic Waste in a Circular Economy Approach to Improve the Properties of Bituminous Binders

et al. 2022

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This work aims to use wax to modify a binder employed in the paving industry. This wax can be obtained either directly or as a by-product from plastic waste′s thermal cracking (pyrolysis). The study characterizes this sustainable material and the binders resulting from blending it with conventional or modified bitumen with other additives applied in the manufacture of bituminous mixtures. Different tests were used: thermogravimetric and spectroscopic analysis; consistency tests; testing of dynamic viscosity at various temperatures; and assessment of the rheologic properties of binders. As a result, several crucial findings were reached: this sustainable wax promotes changes in the viscosity of the binders, their handling temperatures can be reduced, and it contributes to some goals of the U.N. 2030 Agenda. In summary, this work allowed us to conclude that the positive effects of a suitable modification of the bituminous binders, which incorporated this wax and other additives, led to improved consistency and rheological behaviour, having provided, for example, lower temperature susceptibility and higher permanent deformation resistance.

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Section: Dynamic Viscosity (η)mentioning

confidence: 99%