Project PERSUADE: optimization of poroelastic road surfaces in the laboratory

Krishna Prapoorna Biligiri

The paper gives a presentation of the Work Package 2 "Mixture optimization" of the European project PERSUADE; a project which aims at developing poroelastic road surfaces (PERS). The latter are assumed to provide a pavement material that provides exceptional tire/road noise reduction. The task of PERS mixture optimization is extremely complicated, as there are a multitude of variants that one would like to try, but resources allow testing only some of them. The WP2 scope of the work includes selecting test methods that reflect the performance of PERS. So far we have focused on mixes with both hard and rubber aggregates to get mixes which are polishing resistant. The paper presents the test methods we finally have chosen and the criteria we have put on the mixes to pass these tests. The paper discusses some test results briefly and acoustical absorption test results in particular. The paper is mainly a methodology description.

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