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oai:riubu.ubu.es:10259/76512024-05-20T07:20:36Zcom_10259_4204com_10259_5086com_10259_2604col_10259_5373

IRI Performance Models for Flexible Pavements in Two-Lane Roads until First Maintenance and/or Rehabilitation Work Pérez Acebo, Heriberto Linares Unamunzaga, Alaitz Rojí, Eduardo Gonzalo Orden, Hernán International Roughness Index IRI Pavement performance model Pavement management system Deterministic models Pavement management Deterioration models Two-lane roads Flexible pavements Ingeniería civil Transportes Civil engineering Transportation Pavement performance models play a vital role in any pavement management system. The Regional Government of Biscay (RGB) (Spain) manages a 1200 km road network and conducts pavement data collections, including the International Roughness Index (IRI) values. The aim of the paper is to develop an IRI performance model for two-lane roads with flexible pavement until the first maintenance and/or rehabilitation activity is performed. Due to the huge amount of available information, a deterministic model was selected. A literature review of deterministic models showed that, apart from age and traffic volumes, the pavement structure is a key factor. Therefore, it was decided to analyze the only road stretches whose entire pavement section was known (surface layer + base + subbase). Various variables related to age, traffic volumes and employed materials were introduced as possible factors. The multiple linear regression model with the highest coefficient of determination and all the variables significant included the real pavement age, the cumulated heavy traffic and the total thickness of bituminous layers. As the material employed in the surface layer could affect roughness progression, a qualitative variable was introduced to consider various surface materials. The model improved its accuracy, indicating that the surface layer material is also an influencing factor on IRI evolution. 2023-04-20T09:22:37Z 2023-04-20T09:22:37Z 2020-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/10259/7651 10.3390/coatings10020097 2079-6412 eng Coatings. 2020, V. 10, n. 2, 97 https://doi.org/10.3390/coatings10020097 Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess application/pdf MDPI