The Most Effective Index for Pavement Management of Urban Major Roads at a Network Level
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RESEARCH ARTICLE-CIVIL ENGINEERING
The Most Effective Index for Pavement Management of Urban Major Roads at a Network Level Muhammad Mubaraki1
· Hossam Sallam2
Received: 2 July 2020 / Accepted: 5 November 2020 © King Fahd University of Petroleum & Minerals 2020
Abstract On the network level, a condition index is used to describe the pavement distress information that could be utilized for the treatment of pavement conditions in the future. The aim of the present research was to determine the most effective index that suits the network of Jazan—a major city in the Kingdom of Saudi Arabia. In this study, four indices, including (1) present serviceability rating (PSR), (2) present serviceability index (PSI), (3) international roughness index (IRI), and (4) urban distress index (UDI) were investigated. A comparison between the four indices has been made to determine the most effective index to be adopted by the municipality of Jazan for planning and management of urban roads in the city. The study includes the data of 10 urban major roads in the city of Jazan, consisting of 18 pavement sections with a total length of 33 km. In the investigation, it was found that the correlation between UDI and PSI in measuring the pavement condition is very high (85%), which indicates the reliability of these indices in the measurement of the pavement conditions. Hence, the study recommends the PSI as a first choice as it gives reliable information about the pavement condition for urban flexible pavements by using three distresses (cracking, patching, and rutting) only. Also, UDI has been recommended as the second choice, which requires the survey of all pavement distresses. Keywords Rating · Systems · PSR · IRI · PSI · UDI · Index · Urban · Major roads · Network level
1 Introduction The condition index is used to describe pavement distress information in the network of roads. With condition index all types of distress, severities and quantities can be expressed using a single number. On the network level, a condition index is used to predict the time of treatments and pavement conditions in the future. When the condition index represents several pavements distresses, it is known as a composite index. To generate priority ranking settings, more information can be incorporated in other indices (the volume of traffic, road classification, etc.) [1–4]. With the help of these indices, the pavement structure can be managed in an effi-
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Muhammad Mubaraki [email protected] Hossam Sallam [email protected]
1
Department of Civil Engineering, Jazan University, P. Box 114, Jazan, Saudi Arabia
2
Engineering Material Department, Zagazig University, Zagazig 44519, Egypt
cient manner [5–10]. Following this introduction, the next section describes the indices used by researchers in previous studies. Different models and equations used in the past studies are also described in the subsequent sections. The present serviceability rating (PSR) is a rate assigned to a pavement section by the experts of pavement evaluation and stakehol
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