Polymers and plastics are main constituents of a variety of daily life products. Nevertheless, there is great public concern on these materials mainly due to waste and end-of-life management. This work reports an alternative for the recycle and reuse of End-of-Life Plastics (EOLP), as performance-enhancing additives of asphalt for road pavement. Physical–mechanical characteristics of Bitumen 50/70 mixtures containing different percentages of EOLP and other polyolefin waste (Secondary primary polymeric materials, SPPM) are compared to standard Bitumen. All mixtures where characterised to determine tensile strength, resistance by Marshall tests and Marshal quotation, density, air voids, indirect tensile strength (ITS), indirect traction coefficient (ITC). Data highlight that use of EOLP as bitumen modifier allows to improve Marshall Stability and ITS of road asphalts. Moreover, benign features of this process clearly appear due to the increase in plastic reuse and recycling, reduced plastic incineration, bitumen and additives consumption, waste management costs, CO2 production
Environmentally Friendly Disposal of End-Of-Life Plastics for Asphalt Production
Beghetto V.
;Bardella N.;Gatto V.;Conca S.;Sole R.;Ongaro N.;Molin G.
2022-01-01
Abstract
Polymers and plastics are main constituents of a variety of daily life products. Nevertheless, there is great public concern on these materials mainly due to waste and end-of-life management. This work reports an alternative for the recycle and reuse of End-of-Life Plastics (EOLP), as performance-enhancing additives of asphalt for road pavement. Physical–mechanical characteristics of Bitumen 50/70 mixtures containing different percentages of EOLP and other polyolefin waste (Secondary primary polymeric materials, SPPM) are compared to standard Bitumen. All mixtures where characterised to determine tensile strength, resistance by Marshall tests and Marshal quotation, density, air voids, indirect tensile strength (ITS), indirect traction coefficient (ITC). Data highlight that use of EOLP as bitumen modifier allows to improve Marshall Stability and ITS of road asphalts. Moreover, benign features of this process clearly appear due to the increase in plastic reuse and recycling, reduced plastic incineration, bitumen and additives consumption, waste management costs, CO2 production
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