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Tread

About: Tread is a research topic. Over the lifetime, 17795 publications have been published within this topic receiving 99212 citations.


Papers
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Journal ArticleDOI
TL;DR: Data suggest that tire-wear Zn inputs to urban-suburban watersheds can be significantly greater than atmospheric inputs, although the watershed appears to retain appreciable quantities of vehicular Zn Inputs.
Abstract: Tire-tread material has a zinc (Zn) content of about 1 wt %. The quantity of tread material lost to road surfaces by abrasion has not been well characterized. Two approaches were used to assess the magnitude of this nonpoint source of Zn in the U.S. for the period 1936−1999. In the first approach, tread-wear rates from the automotive engineering literature were used in conjunction with vehicle distance-driven data from the U.S. Department of Transportation to determine Zn releases. A second approach calculated this source term from the volume of tread lost during lifetime tire wear. These analyses showed that the quantity of Zn released by tire wear in the mid-1990s was of the same magnitude as that released from waste incineration. For 1999, the quantity of Zn released by tire wear in the U.S. is estimated to be 10 000−11 000 metric tons. A specific case study focused on Zn sources and sinks in an urban−suburban watershed (Lake Anne) in the Washington, DC, metropolitan area for a time period of the late ...

517 citations

Journal ArticleDOI
TL;DR: Morphology, size distribution, and chemical composition were compared between particles generated using different methods, including on-road collection, laboratory generation under simulated driving conditions, and cryogenic breaking of tread rubber.

320 citations

Journal ArticleDOI
TL;DR: In this article, the vertical dynamic behavior of a railway bogie moving on a rail is investigated for sleepers resting on an elastic foundation, and the transient interaction problem is numerically solved by use of an extended state-spacer vector approach in conjunction with a complex modal superposition for the track.

313 citations

Patent
Didier Vasseur1
25 Jul 2001
TL;DR: In this paper, a running-tire consisting of a rubber composition based on at least: (i) a diene elastomer; (ii) more than 50 parts by weight for 100 elastomers parts (pce) of an inorganic filler as reinforcing filler; (iii) between 2 and 15 pce of a coupling agent (inorganic filler/diene elasticomer); (iv) between 1 and 10 pCE of a methylene acceptor; and (v) between 0.5 and 5 pce
Abstract: The invention concerns a tyre running tread consisting, at least partly, of a rubber composition based on at least: (i) a diene elastomer; (ii) more than 50 parts by weight for 100 elastomer parts (pce) of an inorganic filler as reinforcing filler; (iii) between 2 and 15 pce of a coupling agent (inorganic filler/diene elastomer); (iv) between 1 and 10 pce of a methylene acceptor; and (v) between 0.5 and 5 pce of a methylene donor. Said running tread has, after mechanical breaking in of the tyre whereto it is destined (auto-accommodation), a rigidity gradient radially increasing from the surface inwards of the running tread. The invention also concerns the use of such a running tread for making or retreading tyres. The invention further concerns tyres comprising said running tread, in particular, for snow or ice (winter tyres).

257 citations

Patent
Olivier Durel1, Roland Rauline1
29 Dec 2003
TL;DR: In this article, a tire tread incorporating an elastomeric composition reinforced by an inorganic filler, based on at least: (i) a diene elastomers; (ii) as reinforcing inorganic fillers; and (iii) more than 80 phr of a silica of low specific surface area having the following characteristics: (a) a BET-specific surface area of less than 130 m2/g; (b) an average particle size, dw, of between 30 and 300 nm; (iii), a coupling agent providing the bond between the reinforcing
Abstract: A tire tread incorporating an elastomeric composition reinforced by an inorganic filler, based on at least: (i) a diene elastomer; (ii) as reinforcing inorganic filler, more than 80 phr of a silica of low specific surface area having the following characteristics: (a) a BET specific surface area of less than 130 m2/g; (b) an average particle size, dw, of between 30 and 300 nm; (iii) a coupling agent providing the bond between the reinforcing inorganic filler and the diene elastomer; (iv) a vulcanization system comprising sulfur, a vulcanization accelerator and between 0.5 and 1.5 phr of zinc as vulcanization activator. Preferably, this silica furthermore has a disagglomeration rate ax greater than 5×103 μm−/min (measured in the ultrasound disagglomeration test). Compared with a conventional tread for “Green Tires” which is reinforced with a silica of higher specific surface area, the tread of the invention has an improved compromise of (wear resistance/rolling resistance/grip on wet ground) performances. The use of a very small amount of zinc makes it possible to overcome an increase in the induction delays during the vulcanization, when such a silica of low specific surface area is used.

236 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023130
2022259
2021182
2020410
2019550
2018511