Microtexture: Difference between revisions
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#Redirect [[Texture (roads)#Microtexture]] |
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{{Merge|Megatexture (roads)|microtexture|macrotexture|target=Texture (roads)|discuss=Texture (roads)|date=August 2014}} |
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'''Microtexture''' is the collative term for a material's [[crystallographic]] parameters and other aspects of microstructure: such as [[Morphology (materials science)|morphology]], including size and shape distributions; [[chemical]] composition; and [[crystal]] orientation and relationships<ref>Microtexture Determination and its Applications (Second edition), V Randle, 2003</ref> |
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==Vehicular pavement engineering== |
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'''Microtexture''' (MiTx) is a family of wave-shaped road surface characteristics. While vehicle suspension deflection and dynamic tyre loads are affected by longer waves ([[surface roughness|roughness]]), road texture affects the interaction between the road surface and the tyre footprint. Microtexture has wavelengths shorter than 0.5 mm. Other types of road texture are [[Macrotexture]] and Megatexture (roads). |
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MiTx contributes to dry road surface friction. |
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It relates to the surface of the binder, of the ballast, and of contaminations such as rubber deposits from tires. |
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Typically, road agencies do not monitor MiTx directly, but indirectly by brake [[friction]] tests. However, friction also depends on other surface properties, such as [[Macrotexture]]. |
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===Further reading=== |
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*[http://www.pavement.com.au/downloads/papers/PaperDesignofAsphaltToMeetFrictionalRequirements.pdf Development of a Fundamental Skid Resistance Asphalt Mix Design Procedure], Pavement Management Service, Sydney, Australia |
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*[http://www.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTEVAL/PAGES/2355.htm Relationship of Aggregate Microtexture to Asphalt Pavement Skid Resistance], ASTM International, West Conshohocken, United States |
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==Notes== |
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{{reflist}} |
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==References== |
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*[http://www.iso.org/iso/catalogue_detail.htm?csnumber=25638 "ISO 13473-2:2002 Characterization of pavement texture by use of surface profiles -- Part 2: Terminology and basic requirements related to pavement texture profile analysis", International Standard available from the website of the International Organization for Standardization] |
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[[Category:Crystallography]] |
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[[Category:Pavements]] |
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{{Road-stub}} |
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Revision as of 19:36, 7 September 2014
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