Pub Date : 2021-12-20DOI: 10.1201/9781003078814-58
A. Collop, N. Thom, A. Sewell
{"title":"Laboratory Measurement of Crack Propagation in High Stiffness Asphalt Mixtures","authors":"A. Collop, N. Thom, A. Sewell","doi":"10.1201/9781003078814-58","DOIUrl":"https://doi.org/10.1201/9781003078814-58","url":null,"abstract":"","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86816542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Seasonal variation in pavement response is considered to be a major factor affecting pavement performance. Several studies have concluded that in cold climates, most of the pavement damage by fatigue and permanent deformation can be associated with the loss of bearing capacity during spring thaw. The understanding of the bearing capacity loss phenomena needs to be improved and pavement design methodologies dealing specifically with the problem need to be developed. The Quebec Ministry of Transportation, in collaboration with the Laboratoire Central des Ponts et Chaussees (LCPC, France) and Laval University, has undertaken a major research project based on the monitoring of instrumented test sections. Four heavily circulated test sections were constructed and instrumented. Pavement instrumentation includes thermistors, moisture sensors, frost gages, piezometers and heave gauges. Several techniques were used to monitor pavement response during spring. Among others, specially designed strain gauges and multi-depths deflectometers were installed in the test sections. These gauges were built using optic-fibre technology. The paper describes the technology used to develop the new sensors. It also reports on the installation of the instruments and on the measurements taken at the test site under a moving truck during spring thaw. For the covering abstract see ITRD E118503.
{"title":"Monitoring Pavement Response during Spring Thaw Using Fiber-Optic Sensors","authors":"G. D. Ing, G. Ing","doi":"10.1201/9781003078814-4","DOIUrl":"https://doi.org/10.1201/9781003078814-4","url":null,"abstract":"Seasonal variation in pavement response is considered to be a major factor affecting pavement performance. Several studies have concluded that in cold climates, most of the pavement damage by fatigue and permanent deformation can be associated with the loss of bearing capacity during spring thaw. The understanding of the bearing capacity loss phenomena needs to be improved and pavement design methodologies dealing specifically with the problem need to be developed. The Quebec Ministry of Transportation, in collaboration with the Laboratoire Central des Ponts et Chaussees (LCPC, France) and Laval University, has undertaken a major research project based on the monitoring of instrumented test sections. Four heavily circulated test sections were constructed and instrumented. Pavement instrumentation includes thermistors, moisture sensors, frost gages, piezometers and heave gauges. Several techniques were used to monitor pavement response during spring. Among others, specially designed strain gauges and multi-depths deflectometers were installed in the test sections. These gauges were built using optic-fibre technology. The paper describes the technology used to develop the new sensors. It also reports on the installation of the instruments and on the measurements taken at the test site under a moving truck during spring thaw. For the covering abstract see ITRD E118503.","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76147650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-20DOI: 10.1201/9781003078814-14
Y. Choi, A. Collop, N. Thom
Results from laboratory fatigue testing indicate that the effective stiffness modulus of asphaltic material can be reduced significantly under repeated loading without the presence of visible cracking. This indicates that damage is accumulating in the asphaltic material thus reducing the effective volume able to carry the applied load (and hence reducing the effective stiffness modulus). Damage mechanics characterises the state of a material under mechanical loading by a dimensionless scalar variable (known as damage). This paper describes the application of continuous damage mechanics in a simple way to model fatigue of asphalt mixtures. A specimen for uniaxial testing has been developed and a set of stress controlled fatigue tests have been performed over a range of temperatures and stress levels. The results have been used to determine a simple evolution law for the rate of damage accumulation. Trapezoidal cantilever (2-point bend) tests have also been performed and the results have been compared to results from the uniaxial test. For the covering abstract see ITRD E118503.
{"title":"A Simple Damage Approach to Modelling Fatigue in Bituminous Materials","authors":"Y. Choi, A. Collop, N. Thom","doi":"10.1201/9781003078814-14","DOIUrl":"https://doi.org/10.1201/9781003078814-14","url":null,"abstract":"Results from laboratory fatigue testing indicate that the effective stiffness modulus of asphaltic material can be reduced significantly under repeated loading without the presence of visible cracking. This indicates that damage is accumulating in the asphaltic material thus reducing the effective volume able to carry the applied load (and hence reducing the effective stiffness modulus). Damage mechanics characterises the state of a material under mechanical loading by a dimensionless scalar variable (known as damage). This paper describes the application of continuous damage mechanics in a simple way to model fatigue of asphalt mixtures. A specimen for uniaxial testing has been developed and a set of stress controlled fatigue tests have been performed over a range of temperatures and stress levels. The results have been used to determine a simple evolution law for the rate of damage accumulation. Trapezoidal cantilever (2-point bend) tests have also been performed and the results have been compared to results from the uniaxial test. For the covering abstract see ITRD E118503.","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78745624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-20DOI: 10.1201/9781003078814-67
S. Grenier, J. Konrad
The influence of cracks is a major concern for interpretation of the deflection basin obtained from FWD tests. In order to give a better insight of the role of longitudinal and transverse cracks on FWD measurements, an exhaustive FWD campaign was conducted on a recently rehabilitated flexible pavement. FWD tests were done on a selected uncracked pavement section in order to obtain reference values of the deflection basin. Subsequently, cracks were cut into the 100mm thick asphalt concrete layer and FWD tests were conducted close to a transverse crack as well as a longitudinal crack. The asphalt concrete layer temperature was monitored during deflection tests for temperature correction purposes. As expected, the mean temperature of the asphalt concrete layer has a major influence on the deflections measured from the geophones close to the loading plate, and field data must be corrected accordingly. The comparison between FWD test data before and after cracking shows that a transverse crack creates a distortion in the shape of the deflection basin when the loading plate is near the crack. In the case of the longitudinal crack, an increase in the value of deflection was noted for the first geophones when the loading plate is near the crack. It was established that the influence of any crack on deflections was negligible if the distance of the loading plate with respect to the crack was larger than 600 mm in pavements with a relatively thin wearing course. For the covering abstract see ITRD E118503.
{"title":"Evaluation of the Influence of Asphalt Concrete Pavement Discontinuities on Falling Weight Deflectometer Measurements","authors":"S. Grenier, J. Konrad","doi":"10.1201/9781003078814-67","DOIUrl":"https://doi.org/10.1201/9781003078814-67","url":null,"abstract":"The influence of cracks is a major concern for interpretation of the deflection basin obtained from FWD tests. In order to give a better insight of the role of longitudinal and transverse cracks on FWD measurements, an exhaustive FWD campaign was conducted on a recently rehabilitated flexible pavement. FWD tests were done on a selected uncracked pavement section in order to obtain reference values of the deflection basin. Subsequently, cracks were cut into the 100mm thick asphalt concrete layer and FWD tests were conducted close to a transverse crack as well as a longitudinal crack. The asphalt concrete layer temperature was monitored during deflection tests for temperature correction purposes. As expected, the mean temperature of the asphalt concrete layer has a major influence on the deflections measured from the geophones close to the loading plate, and field data must be corrected accordingly. The comparison between FWD test data before and after cracking shows that a transverse crack creates a distortion in the shape of the deflection basin when the loading plate is near the crack. In the case of the longitudinal crack, an increase in the value of deflection was noted for the first geophones when the loading plate is near the crack. It was established that the influence of any crack on deflections was negligible if the distance of the loading plate with respect to the crack was larger than 600 mm in pavements with a relatively thin wearing course. For the covering abstract see ITRD E118503.","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73781918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-20DOI: 10.1201/9781003078814-10
T. Saarenketo, S. Bell, G. Berntsen, S. Sundberg, E. Vuontisjarvi
The road districts of Lapland in Finland, Northern Region in Sweden, Trombs County in Norway, and the Highlands in Scotland have initiated a technical, trans-national collaborative project ROADEX. The aim of this collaboration is, through the exchange of experience, to identify the best practice strategies and develop procedures for dealing with common challenges associated with the maintenance of low traffic volume road networks in sparsely populated northern regions. The focus of the ROADEX sub project A (SPA) is on the low traffic volume roads of the partner districts. One of the subproject's special interests is the use of traffic restrictions in the partner districts and techniques to improve bearing capacity of these roads. This paper presents the results from phase I of the project, a comparison study of each road district's current policies and techniques in addressing the issues, and also briefly summarises the results of the phase II field tests, which focused on the standard and best practise structures as well as testing the different kinds of special structures utilised in the road districts. The results of the Roadex subproject "Road Condition management" show that, in spite of similar basic problems in each partner district, each country has emphasized slightly different strategies and techniques when trying to resolve bearing capacity problems in their low traffic volume road network. For the covering abstract see ITRD E118503.
{"title":"ROADEX – Benchmarking Low Traffic Volume Road Condition Management in EU Northern Periphery Area","authors":"T. Saarenketo, S. Bell, G. Berntsen, S. Sundberg, E. Vuontisjarvi","doi":"10.1201/9781003078814-10","DOIUrl":"https://doi.org/10.1201/9781003078814-10","url":null,"abstract":"The road districts of Lapland in Finland, Northern Region in Sweden, Trombs County in Norway, and the Highlands in Scotland have initiated a technical, trans-national collaborative project ROADEX. The aim of this collaboration is, through the exchange of experience, to identify the best practice strategies and develop procedures for dealing with common challenges associated with the maintenance of low traffic volume road networks in sparsely populated northern regions. The focus of the ROADEX sub project A (SPA) is on the low traffic volume roads of the partner districts. One of the subproject's special interests is the use of traffic restrictions in the partner districts and techniques to improve bearing capacity of these roads. This paper presents the results from phase I of the project, a comparison study of each road district's current policies and techniques in addressing the issues, and also briefly summarises the results of the phase II field tests, which focused on the standard and best practise structures as well as testing the different kinds of special structures utilised in the road districts. The results of the Roadex subproject \"Road Condition management\" show that, in spite of similar basic problems in each partner district, each country has emphasized slightly different strategies and techniques when trying to resolve bearing capacity problems in their low traffic volume road network. For the covering abstract see ITRD E118503.","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91401671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-20DOI: 10.1201/9781003078814-11
M. Sršen, I. Kršić
The condition of semi-rigid pavement at the motorway section from Zagreb to Kutina, initially opened to traffic in the late 70s, is described and the plan for maintenance and rehabilitation work by individual subsections is outlined. A detailed account is given of the method used to determine types of pavement damage (cracks, evenness, rutting and skid resistance). The evaluation of pavement condition was performed using the pavement surface condition index (whose values range from 0 to 5) based on the OECD methodology for assessment of pavement condition. The resulting maintenance activities may be described as complex and rather extensive tasks that must be repeated in appropriate time intervals and which will significantiy improve motorway pavement serviceability. Based on preliminary analyses, the proposal is given for the maintenance and rehabilitation of driving, overtaking and stopping lanes for individual motorway subsections. For the covering abstract see ITRD E118503.
{"title":"Pavement Condition Survey at a Motorway Section in Croatia: Maintenance and Rehabilitation Activities","authors":"M. Sršen, I. Kršić","doi":"10.1201/9781003078814-11","DOIUrl":"https://doi.org/10.1201/9781003078814-11","url":null,"abstract":"The condition of semi-rigid pavement at the motorway section from Zagreb to Kutina, initially opened to traffic in the late 70s, is described and the plan for maintenance and rehabilitation work by individual subsections is outlined. A detailed account is given of the method used to determine types of pavement damage (cracks, evenness, rutting and skid resistance). The evaluation of pavement condition was performed using the pavement surface condition index (whose values range from 0 to 5) based on the OECD methodology for assessment of pavement condition. The resulting maintenance activities may be described as complex and rather extensive tasks that must be repeated in appropriate time intervals and which will significantiy improve motorway pavement serviceability. Based on preliminary analyses, the proposal is given for the maintenance and rehabilitation of driving, overtaking and stopping lanes for individual motorway subsections. For the covering abstract see ITRD E118503.","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89898586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-20DOI: 10.1201/9781003078814-21
A. Huvstig
All roads in Sweden were designed with help of empirical data until 1994. Today, almost all road design is based on multi-layer models with large correction factors. In these models it is for example difficult to find a combination of influence on the road deterioration from many factors like frost/thaw and loading. Mechanistic models are under development in many universities and research institutes in the world today. Sweden has also started a research program on this theme some years ago, in order to create a new mechanistic design model for roads. One problem is that it is of no use to develop a system, which almost no-one can use. Therefore it is necessary to improve the knowledge and competence in the whole business trade for road design and road construction. One part of this work is a new and modern Swedish code, where the tables are replaced with calculation programs. Another part is a broad common education of consultants, clients and contractors. It is also important to validate a new design system and test methods. Sweden has therefore started a broad co-operation between the technical universities and research institutes in the Nordic countries, which could be extended also to other countries. For the covering abstract see ITRD E118503.
{"title":"Mechanistic Model for Road Design in Sweden","authors":"A. Huvstig","doi":"10.1201/9781003078814-21","DOIUrl":"https://doi.org/10.1201/9781003078814-21","url":null,"abstract":"All roads in Sweden were designed with help of empirical data until 1994. Today, almost all road design is based on multi-layer models with large correction factors. In these models it is for example difficult to find a combination of influence on the road deterioration from many factors like frost/thaw and loading. Mechanistic models are under development in many universities and research institutes in the world today. Sweden has also started a research program on this theme some years ago, in order to create a new mechanistic design model for roads. One problem is that it is of no use to develop a system, which almost no-one can use. Therefore it is necessary to improve the knowledge and competence in the whole business trade for road design and road construction. One part of this work is a new and modern Swedish code, where the tables are replaced with calculation programs. Another part is a broad common education of consultants, clients and contractors. It is also important to validate a new design system and test methods. Sweden has therefore started a broad co-operation between the technical universities and research institutes in the Nordic countries, which could be extended also to other countries. For the covering abstract see ITRD E118503.","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84951752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-20DOI: 10.1201/9781003078814-36
C. Lenngren, H. Carlsson
The present paper discusses how a mechanistic design process evolved for airfields in Sweden and how it is being used. Also, a sensitivity study is presented showing parameter influence on the bearing capacity expressed in Pavement Classification Number (PCN). For example, how do revised asphalt strain criteria affect the resulting PCN-value? Other parameters included the stiffness of the asphalt layer, the base layer, and subgrade during the spring thaw period. An equivalent number of standard wheel load (ESWL) was calculated for some commonly used aircrafts on selected Swedish airfield pavements. These calculations were based on the tensile strain at bottom of the asphalt layer. Thus, the Aircraft Classification Number (ACN) derived in this manner could be compared to the existing status. The paper also discusses some future applications using high-speed rolling deflectometers. For the covering abstract see ITRD E118503.
{"title":"Airfield Pavement Structural Analyses and Design in Sweden","authors":"C. Lenngren, H. Carlsson","doi":"10.1201/9781003078814-36","DOIUrl":"https://doi.org/10.1201/9781003078814-36","url":null,"abstract":"The present paper discusses how a mechanistic design process evolved for airfields in Sweden and how it is being used. Also, a sensitivity study is presented showing parameter influence on the bearing capacity expressed in Pavement Classification Number (PCN). For example, how do revised asphalt strain criteria affect the resulting PCN-value? Other parameters included the stiffness of the asphalt layer, the base layer, and subgrade during the spring thaw period. An equivalent number of standard wheel load (ESWL) was calculated for some commonly used aircrafts on selected Swedish airfield pavements. These calculations were based on the tensile strain at bottom of the asphalt layer. Thus, the Aircraft Classification Number (ACN) derived in this manner could be compared to the existing status. The paper also discusses some future applications using high-speed rolling deflectometers. For the covering abstract see ITRD E118503.","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83355730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-20DOI: 10.1201/9781003078814-75
J. Pedersen, O. Noer, O. Olsen, D. Marquart, P. Offrell
In the spring of 2000 Ribe County decided to outsource part of the road maintenance work. A work group was established consisting of representatives from counties and contracting companies in order to work out procedures, terms and conditions for outsourcing of road maintenance and in order to determine which parameters could be used for quality assurance. In Denmark the bearing capacity was selected as one of the parameters for quality assurance. The bearing capacity was to be measured by means of a falling weight deflectometer (FWD). In order to find out how these values could be of benefit, a decision was made to start a test project in order to determine the degree of repeatability of the FWD measuring procedure. The testing results were to form the basis of the procedures, terms and conditions to be set up for the use of bearing capacity measurements performed by means of FWD in connection with outsourcing contracts. The paper presents the testing part dealing with repeatability and the season variations in the calculated residual life and reinforcement needs. For the covering abstract see ITRD E118503.
{"title":"Validation of FWD Measurements in Connection with Outsourcing Contract","authors":"J. Pedersen, O. Noer, O. Olsen, D. Marquart, P. Offrell","doi":"10.1201/9781003078814-75","DOIUrl":"https://doi.org/10.1201/9781003078814-75","url":null,"abstract":"In the spring of 2000 Ribe County decided to outsource part of the road maintenance work. A work group was established consisting of representatives from counties and contracting companies in order to work out procedures, terms and conditions for outsourcing of road maintenance and in order to determine which parameters could be used for quality assurance. In Denmark the bearing capacity was selected as one of the parameters for quality assurance. The bearing capacity was to be measured by means of a falling weight deflectometer (FWD). In order to find out how these values could be of benefit, a decision was made to start a test project in order to determine the degree of repeatability of the FWD measuring procedure. The testing results were to form the basis of the procedures, terms and conditions to be set up for the use of bearing capacity measurements performed by means of FWD in connection with outsourcing contracts. The paper presents the testing part dealing with repeatability and the season variations in the calculated residual life and reinforcement needs. For the covering abstract see ITRD E118503.","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81892806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-20DOI: 10.1201/9781003078814-41
M. Wistuba, J. Litzka
Climate strongly influences the bearing capacity and the stiffness of pavements. Therefore climatic effects are very important in a modern pavement design procedure. In order to optimize a pavement construction and to increase its long-term performance, the specific local climate has to he considered in the design process. The Austrian analytical design procedure for asphalt pavements is an example of considering the climatic conditions in the design calculation. The consideration of climatic parameters is based on the seasonal temperature distributions in the asphalt layer. Design temperatures are classified referring to the local Austrian climates. The paper presents the results of latest research at the Institute for Road Construction and Maintenance at Vienna University of Technology, which mainly aims at an improvement of the Austrian pavement design procedure. For the covering abstract see ITRD E118503.
{"title":"Consideration of Climatic Conditions in Pavement Design","authors":"M. Wistuba, J. Litzka","doi":"10.1201/9781003078814-41","DOIUrl":"https://doi.org/10.1201/9781003078814-41","url":null,"abstract":"Climate strongly influences the bearing capacity and the stiffness of pavements. Therefore climatic effects are very important in a modern pavement design procedure. In order to optimize a pavement construction and to increase its long-term performance, the specific local climate has to he considered in the design process. The Austrian analytical design procedure for asphalt pavements is an example of considering the climatic conditions in the design calculation. The consideration of climatic parameters is based on the seasonal temperature distributions in the asphalt layer. Design temperatures are classified referring to the local Austrian climates. The paper presents the results of latest research at the Institute for Road Construction and Maintenance at Vienna University of Technology, which mainly aims at an improvement of the Austrian pavement design procedure. For the covering abstract see ITRD E118503.","PeriodicalId":11581,"journal":{"name":"Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88968505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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