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61,005 resultsShowing papers similar to Settling Velocities of Tire and Road Wear Particles: Analyzing Finely Graded Density Fractions of Samples from a Road Simulator and a Highway Tunnel.
ClearThe transport of tyre wear particles in rivers, with a focus on settling and resuspension
Researchers investigated the transport dynamics of tyre and road wear particles (TRWPs) in river systems, with particular focus on settling and resuspension processes in aquatic environments, and explored pathways toward groundwater, addressing a gap in understanding TRWP fate in the environment.
The transport of tyre wear particles in rivers, with a focus on settling and resuspension
Researchers investigated the transport, settling, and resuspension behavior of tyre and road wear particles (TRWPs) in river systems compared to conventional microplastics, presenting initial characterization data on TRWP density and zeta potential and conducting mesocosm flume experiments to test hypotheses about their differential environmental fate.
Analysis of TRWP Particle Distribution in Urban and Suburban Landscapes, Connecting Real Road Measurements with Particle Distribution Simulation
Researchers combined road-based tyre and road wear particle emission sampling with particle distribution simulations at a high-traffic urban intersection, finding that TRWP concentrations correlated with vehicle dynamics such as braking and acceleration, and that air humidity and dust resuspension significantly influenced particle measurements in the field.
Tire and road wear particles contamination in infiltration ponds sediments: occurrence, spatial variability, size distribution and correlation with metals
Researchers examined tire and road wear particle (TRWP) contamination in infiltration pond sediments, characterizing their occurrence, spatial variability, size distribution, and correlation with heavy metals to assess the pollution dynamics of these road-derived particles in urban drainage systems.
Characteristics of Vehicle Tire and Road Wear Particles’ Size Distribution and Influencing Factors Examined via Laboratory Test
Researchers conducted laboratory tests to characterize the size distribution of tire and road wear particles under various conditions. The study found that factors such as driving speed, tire composition, and road surface characteristics significantly influence the size and quantity of wear particles released, which are a growing source of microplastic pollution.
Urban wash-off of tire wear particles
Researchers used a rainfall simulator to study how tire wear particles, an important class of microplastics, are washed off road surfaces during storm events. They found that low surface roughness, high rainfall intensity, and low slope produced the fastest and most complete mobilization of tire wear particles. The study reveals that larger tire particles moved faster than smaller ones, and flow depth was the most important factor governing wash-off behavior.
Tyre and road wear particles from source to sea
Researchers traced tyre and road wear particles (TRWP) — tiny rubber fragments shed when vehicles brake and turn — from urban roads into marine sediments, finding that softer tyres with more natural rubber shed more particles and that TRWP concentrations drop sharply with distance from cities. Unlike lighter microplastics that drift widely, TRWP sink quickly and accumulate near urban coastlines, threatening nearshore sediment ecosystems.
Settling velocities of microplastics and tire and road wear particles
Researchers developed a high-precision optical imaging method to measure how fast small microplastics (10–400 micrometers) and tire-and-road wear particles sink through water, filling a critical data gap needed to predict where these pollutants accumulate in aquatic environments.
Tire wear particles in the aquatic environment - A review on generation, analysis, occurrence, fate and effects
Researchers reviewed available science on tire wear particles (TWP) — tiny fragments shed from tires during driving — finding that Europe alone generates over 1.3 million tonnes per year, but critical data on environmental concentrations, transport to waterways, and aquatic toxicity remain too limited for robust ecological risk assessment.
Realistic evaluation of tire wear particle emissions and their driving factors on different road types
This study measured tire wear particle (TWP) emissions under realistic driving conditions on different road types and identified the key driving factors affecting emission rates. Tire wear particles are a major category of microplastic pollution in road runoff, and this data is needed to estimate their contribution to environmental contamination.
Tyre wear particles and metals in highway roadside ditches: Occurrence and potential transport pathways.
Researchers characterized the occurrence and distribution of tyre wear particles (TWP) and associated metals in roadside soils and drainage ditches along a highway, investigating transport pathways and estimating the potential for TWP and metal contamination to reach surface water.
Shades of grey—tire characteristics and road surface influence tire and road wear particle (TRWP) abundance and physicochemical properties
A suite of experiments characterized how tire type, compound, and road surface properties influence tire and road wear particle (TRWP) size, morphology, and emission rates, finding significant variation across tire and road combinations relevant to predicting environmental exposure.
Types and concentrations of tire wear particles (TWPs) in road dust generated in slow lanes.
Road dust samples collected near traffic lights contained tire wear particles (TWPs), with the concentration and size distribution varying by location and traffic direction. Tire wear is one of the largest sources of microplastic pollution in urban environments, and these particles are carried into waterways by stormwater runoff.
Classification and Characterization of Tire-Road Wear Particles in Road Dust by Density
Tire-road wear particles were classified and characterized by density using road dust from an asphalt pavement, allowing separation of tire tread-derived particles from road surface and mineral components. The density-based classification approach improves the accuracy of tire wear particle quantification in environmental monitoring studies.
Tire wear particles concentrations in gully pot sediments
Researchers measured tire wear particle (TWP) concentrations in gully pot sediments, developing analytical methods to quantify this major microplastic source in road runoff as it enters urban drainage systems before reaching the broader environment.
Characterization of tire and road wear particles in urban river samples
Tire and road wear particles in urban river sediments from the Seine River were characterized using density separation and chemical mapping methods, finding average particle sizes of 133-250 microns with TRWP concentrations of up to 930 mg/kg dry sediment downstream of the Rouen urban area.
Concentrations of tire wear microplastics and other traffic-derived non-exhaust particles in the road environment
Researchers measured actual environmental concentrations of tire wear microplastics and other traffic-derived non-exhaust particles in a rural highway setting, providing field-based data to complement the theoretical estimates that dominate current literature.
Seasonal variation in characteristics of wear microparticles of high density (> 1.8 g cm−3) produced on road
By analyzing road dust across seasons, this study characterized the types and quantities of high-density wear particles (denser than 1.8 g/cm³) produced by traffic, including tire rubber, road paint, glass beads, and plastic particles, with winter generating the most. Dense particles settle out of water quickly, meaning they concentrate in nearby river sediments and could serve as useful tracers for tracking road-sourced pollution.
Relevance of tyre wear particles to the total content of microplastics transported by runoff in a high-imperviousness and intense vehicle traffic urban area.
Researchers characterized microplastics and tire wear particles (TWPs) transported by urban stormwater runoff in a highly impervious catchment, finding that TWPs made up a substantial fraction of the total microplastic load in sediments of a stormwater detention reservoir. The study underscores the contribution of road traffic to microplastic pollution entering waterways.
Assessment of fine and coarse tyre wear particles along a highway stormwater system and in receiving waters: Occurrence and transport
Researchers tracked tire wear particles through a highway stormwater drainage system in Sweden and found contamination at nearly every sampling point, with concentrations reaching up to 17 milligrams per liter in water. A significant portion of the particles were very small, in the 1.6 to 20 micrometer range, which are harder to filter out and more likely to travel long distances. The study highlights that tire wear is a major and often overlooked source of microplastic pollution reaching waterways.
Characterization of tire and road wear microplastic particle contamination in a road tunnel: From surface to release
Researchers characterized tire and road wear particle distributions across multiple compartments of a road tunnel including road surfaces, gully pots, and wash water, finding the highest concentrations in side bank surface deposits and gully pots at the tunnel inlet. Sedimentation treatment retained only 63% of tire and road wear particles from wash water, highlighting the need for improved treatment to prevent environmental release.
Quantifying pathways of tyre wear into the environment.
Researchers conducted the first national-scale spatial analysis of tyre wear particle (TWP) pathways in the UK, estimating that 79.5 kilotonnes of TWPs are released annually with 23-34 kt reaching surface waters, 18.5-30.2 kt deposited on roadsides, and 1.3-6.7 kt entering the atmosphere.
An estimation of tire and road wear particles emissions in surface water based on a conceptual framework
Researchers developed a conceptual framework to estimate emissions of tire and road wear particles (TRWPs) into surface water, identifying them as a dominant source of microplastic contamination in freshwater environments globally.
Characterization of airborne tire particle emissions under realistic conditions on the chassis dynamometer, on the test track, and on the road
Researchers developed a new tire and road wear particle (TRWP) sampling system and characterized airborne emissions under real-world conditions on a chassis dynamometer, test track, and public road. Emissions showed a bimodal size distribution with dominant modes at ~10 nm and 270 nm, with SEM/EDS revealing two particle formation mechanisms and confirming tire rubber as a major source of ultrafine airborne particles.