Deterioration Modelling of Granular Pavements for Rural Arterial Roads
DETERIORATION MODELLING OF GRANULAR PAVEMENTS FOR RURAL ARTERIAL ROADS By Nahla Hussein Aswad Alaswadko Submitted in fulfillment of the requirements for the degree of Doctor of Philosophy Faculty of Science, Engineering and Technology Swinburne University of Technology Melbourne, Australia December 2016 ABSTRACT ABSTRACT To keep any network in service at an acceptable condition and maintain and preserve the network performance, the management system can be enhanced by models for predicting pavement conditions. Investigation into maintenance and rehabilitation of rural arterial roads is triggered when road condition reaches certain threshold levels of roughness, rutting and cracking. To assist road agencies in their long term planning, the aim of this research project is to develop powerful deterioration models for a rural arterial network, using novel approaches for data preparation and modelling. The reliability and usefulness of such models in a pavement management system stem from using accurate datasets with suitable modelling approaches. Therefore, the study’s main goal is to use a new approach for preparing accurate condition data to use in developing pavement deterioration models utilising a new modelling approach. Pavement condition parameters modelled herein, include surface roughness, rutting and cracking. To achieve the aim of this study, representative samples of highways from Victoria’s spray sealed rural network are considered. The selected sample network is from 40 highways with a combined length of more than 2,300 km. The network covers a large sample size with representative ranges of traffic loading, pavement strength, subgrade soil type and environmental factors for four road classes (M, A, B and C) which differ in quality and function.
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