Modelling Road Deterioration And Maintenance Effects In Hdm 4
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Modelling Road Deterioration And Maintenance Effects In Hdm 4
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Author :
language : en
Publisher:
Release Date : 1995
Modelling Road Deterioration And Maintenance Effects In Hdm 4 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Road Deterioration And Maintenance Effects
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Author :
language : en
Publisher:
Release Date : 1987
Road Deterioration And Maintenance Effects written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Data Review And Calibration Of Hdm 4 Road Deterioration Models
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Author : Tim Martin
language : en
Publisher:
Release Date : 2004
Data Review And Calibration Of Hdm 4 Road Deterioration Models written by Tim Martin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Pavements categories.
Data review and calibration of HDM-4 road deterioration models, research report ARR 360.
The Applicability Of Published Pavement Deterioration Models For National Roads
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Author : Louw Kannemeyer
language : en
Publisher:
Release Date : 2014
The Applicability Of Published Pavement Deterioration Models For National Roads written by Louw Kannemeyer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The growing interest in pavement management systems (PMSs), both in South Mrica and internationally, has been in response to a shift in importance from the construction of new roads to the maintenance of the existing paved network coupled with increasingly restrictive road funding. In order to develop a balanced expenditure programme for the national roads of South Africa there is a need to predict the rate of deterioration of a pavement and the nature of the changes in its condition so that the timing, type and cost of maintenance needs could be estimated. Internationally these expected changes in pavement condition are predicted by pavement deterioration models, which normally are algorithms developed mathematically or from a study of pavement deterioration. Since no usable pavement deterioration models existed locally, it was necessary to evaluate overseas literature on pavement deterioration prediction models with the aim of identifying models possibly applicable to the national roads of South Africa. Only deterioration models developed from the deterioration results of inservice pavements under a normal traffic spectrum were evaluated. Models developed from accelerated testing were avoided since these models virtually eliminated long?term effects (these are primarily environmental but also include effects of the rest periods between loads), and that the unrepresentative traffic loading regimes can distort the behaviour of the pavement materials, which is often stress dependent. Models developed from the following studies were evaluated: AASHO Road Test The Kenya study Brazil-UNDP study (HDM-ill models) Texas study Of all the above models studied that were developed from major studies it was concluded that the incremental models developed during the Brazil study, were the most appropriate for further evaluation under South African conditions. A sensitivity analysis was conducted on the HDM-III models to evaluate their sensitivity to changes in the different parameters comprising each model. The results obtained from the sensitivity analysis indicate that the incremental roughness prediction model incorporated into the HDM-III model tends to be insensitive to changes in most parameters. Accuracy ranges for input data were, however, also identified for parameters which indicated an increase in sensitivity in certain ranges. The local applicability of the HDM-III deterioration models were finally evaluated by comparing HDM-III model predictions with the actually observed deterioration values of a selected number of national road pavement sections. To enable the above comparison, a validation procedure had to be developed according to which the format of existing data could be transformed to that required by the HDM-ill model, as well as additional information be calculated. From the comparison it was concluded that the HDM-III models are capable of accurately predicting the observed deterioration on South African national roads, but that for most models calibration is needed for local conditions. Guidelines regarding recommended calibration factor ranges for the different HDM-ill models are given. Finally it is recommended that the HDM-III models should be considered for incorporation into a balanced expenditure programme for the national roads of South Africa.
Roads And Airports Pavement Surface Characteristics
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Author : Maurizio Crispino
language : en
Publisher: CRC Press
Release Date : 2023-06-05
Roads And Airports Pavement Surface Characteristics written by Maurizio Crispino and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-06-05 with Technology & Engineering categories.
Roads and Airports Pavement Surface Characteristics contains the papers presented at the 9th International Symposium on Pavement Surface Characteristics (SURF 2022, Milan, Italy, 12-14 September 2022). The symposium was jointly organized by the Italian company that manages Italy’s National Roads (ANAS –Ferrovie dello Stato Italiane Group), the World Road Association (PIARC) and Politecnico di Milano. The contributions aim to improve the quality of pavement surface characteristics while accomplishing efficiency, safety, sustainability, and addressing new generation mobility needs. The book covers topics from emerging research to engineering practice, and is divided in the following sections: Advanced and performing construction methods and equipment Next generation mobility Data monitoring and performance assessment Surface features and performances| Maintenance and preservation treatments Pavement management Economic and political strategies Safety and risk issues Minimizing road impacts Sustainability and performances issues about materials and design Pavements surfaces and urban heat islands Weather conditions impact Airport pavements Roads and Airports Pavement Surface Characteristics is of interest to academics, engineers and professionals in the fields of pavement engineering, transport infrastructure, and related disciplines.
7th Rilem International Conference On Cracking In Pavements
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Author : A. Scarpas
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-08-30
7th Rilem International Conference On Cracking In Pavements written by A. Scarpas and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-30 with Technology & Engineering categories.
In the recent past, new materials, laboratory and in-situ testing methods and construction techniques have been introduced. In addition, modern computational techniques such as the finite element method enable the utilization of sophisticated constitutive models for realistic model-based predictions of the response of pavements. The 7th RILEM International Conference on Cracking of Pavements provided an international forum for the exchange of ideas, information and knowledge amongst experts involved in computational analysis, material production, experimental characterization, design and construction of pavements. All submitted contributions were subjected to an exhaustive refereed peer review procedure by the Scientific Committee, the Editors and a large group of international experts in the topic. On the basis of their recommendations, 129 contributions which best suited the goals and the objectives of the Conference were chosen for presentation and inclusion in the Proceedings. The strong message that emanates from the accepted contributions is that, by accounting for the idiosyncrasies of the response of pavement engineering materials, modern sophisticated constitutive models in combination with new experimental material characterization and construction techniques provide a powerful arsenal for understanding and designing against the mechanisms and the processes causing cracking and pavement response deterioration. As such they enable the adoption of truly "mechanistic" design methodologies. The papers represent the following topics: Laboratory evaluation of asphalt concrete cracking potential; Pavement cracking detection; Field investigation of pavement cracking; Pavement cracking modeling response, crack analysis and damage prediction; Performance of concrete pavements and white toppings; Fatigue cracking and damage characterization of asphalt concrete; Evaluation of the effectiveness of asphalt concrete modification; Crack growth parameters and mechanisms; Evaluation, quantification and modeling of asphalt healing properties; Reinforcement and interlayer systems for crack mitigation; Thermal and low temperature cracking of pavements; and Cracking propensity of WMA and recycled asphalts.
Effect Of Pavement Condition On Vehicle Operating Costs Including Fuel Consumption Vehicle Durability And Damage To Transported Goods
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Author : Imen Zaabar
language : en
Publisher:
Release Date : 2010
Effect Of Pavement Condition On Vehicle Operating Costs Including Fuel Consumption Vehicle Durability And Damage To Transported Goods written by Imen Zaabar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Energy consumption categories.
Estimating The Effects Of Pavement Condition On Vehicle Operating Costs
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Author : Karim Chatti
language : en
Publisher: Transportation Research Board
Release Date : 2012
Estimating The Effects Of Pavement Condition On Vehicle Operating Costs written by Karim Chatti and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Technology & Engineering categories.
At head of title: National Cooperative Highway Research Program.
Rural Road Investment Efficiency
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Author : Gael Raballand
language : en
Publisher: World Bank Publications
Release Date : 2010-03-23
Rural Road Investment Efficiency written by Gael Raballand and has been published by World Bank Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-03-23 with Business & Economics categories.
The development aid community has placed a great deal of emphasis on the need for rural mobility in Sub-Saharan Africa (SSA). Thus far, most development partners and governments in SSA have relied on two overarching assumptions when dispensing transport aid that most households in rural areas in Africa are not connected to markets and therefore need a road passable for a truck, and that roads with high levels of service are crucial in order to achieve high economic impact. Based on data collection from various sources in three SSA countries, 'Rural Road Investment Efficiency' demonstrates that from a cost-benefit perspective, the additional cost of extending an all-weather road two more kilometers to the farmer s door outweigh the benefits in most cases. 'Rural Road Investment Efficiency' seeks to enhance the effectiveness of aid allocated for rural transport in SSA and calls into question the need for full implementation of all benchmarks set forth in the Rural Access Index (RAI) in SSA. This book will be an essential reference for government supervisory authorities and infrastructure experts throughout the region.
Modelling Pavement Deterioration And Maintenance In New Zealand The Hdm Approach
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Author :
language : en
Publisher:
Release Date : 1997
Modelling Pavement Deterioration And Maintenance In New Zealand The Hdm Approach written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.