Title: Development of a Method to Establish Criteria for Pavement Roughness Evaluation
Abstract: Profile measurements are extensively utilized for both initial evaluation of pavement surface and for the monitoring of pavement roughness on in service pavements. The selection of roughness specifications or trigger values is an important subject in both cases as they influence the maintenance interventions levels. The present research considers roughness indices or methods, including the International Roughness Index (IRI), Power Spectral Density (PSD) road profile analysis and surface tolerance, which are used for the roughness condition survey and evaluation. By investigating the fundamental principles of such evaluation procedures, a method for establishing weighted IRI trigger values is presented. This method suggests that the establishment of IRI trigger values could be based on developed correlation functions between IRI values and PSD analysis results with respect to surface tolerance and traveling speed. For this purpose in situ roughness measurements are processed and analyzed properly. Then, as input of the developed functions, acceptability criteria of the surface tolerance measured with a fixed plane are considered for estimating IRI trigger values, to the benefit of quality assurance and control measures that related to pavement roughness evaluation.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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