Title: Study of the effects of concrete pavement macro-mega texture on IRI values
Abstract: This paper presents a study evaluating the effect pavement texture can have on profiler based International Roughness Index (IRI) values. The IRI is the most common pavement roughness index and is the roughness measure used by the USA for overall tracking of the condition of the Freeway system. This study indicates IRI values can be affected by as much as 0.6 metres per kilometre for texture size range observed in the FHWA LTPP GPS3 jointed concrete pavements. The effect of variation in texture size is quantified using an analysis of the variation of curvature in real pavement profiles and comparing it to simulated textures. The variation of curvature associated with different sizes of idealized texture is matched to the observed variation of curvature within the FHWA LTPP GPS3 data. After matching the idealized texture to the real pavement data, idealized texture profiles are run through an IRI calculator to assess the variation in IRI caused by texture. A thorough understanding of the effect of texture on IRI values is necessary in order to be able to use IRI as the basis for initial smoothness specifications.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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Cited By Count: 1
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