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Climate impact on the durability of asphalt concrete

Sulejmani, Pajtim LU (2020) In Bulletin
Abstract
Roads are subjected to traffic loads and varying climate conditions that eventually lead to different types of damage. Moisture in asphalt is one of the major causes of premature failure in asphalt pavements. In addition, moisture in the unbound layers and temperature in the asphalt concrete (AC) layers affect the structural response of pavements under loading, such as the tensile strain at the bottom of AC layers. This thesis focused on identifying the influence of climate on the deterioration of flexible
pavement and on the assessment of pavement performance with regard to variations of temperature and moisture content. Laboratory testing of AC with various mix compositions under repeated pore pressure loadings to quantify the... (More)
Roads are subjected to traffic loads and varying climate conditions that eventually lead to different types of damage. Moisture in asphalt is one of the major causes of premature failure in asphalt pavements. In addition, moisture in the unbound layers and temperature in the asphalt concrete (AC) layers affect the structural response of pavements under loading, such as the tensile strain at the bottom of AC layers. This thesis focused on identifying the influence of climate on the deterioration of flexible
pavement and on the assessment of pavement performance with regard to variations of temperature and moisture content. Laboratory testing of AC with various mix compositions under repeated pore pressure loadings to quantify the influence of mix
composition against moisture sensitivity was performed. The influence of climate parameters, i.e. moisture content and temperature on the tensile strain at the bottom of the AC layer, was also studied by means of a falling weight deflectometer and
response measurements at full-scale pavement test sections. The results showed that binder content, air void content and pore pressure conditioning have a significant influence on the stiffness reduction of AC. In addition, the temperature and moisture
content have yielded significant contributions towards explaining the strain at the bottom of AC layers. Relationships between climate impact and asphalt pavement properties have been proposed which may be useful in the evaluation and design of
flexible pavement with respect to climate conditions. (Less)
Abstract (Swedish)
Roads are subjected to traffic loads and varying climate conditions that eventually lead to different types of damage. Moisture in asphalt is one of the major causes of premature failure in asphalt pavements. In addition, moisture in the unbound layers and temperature in the asphalt concrete (AC) layers affect the structural response of pavements under loading, such as the tensile strain at the bottom of AC layers. This thesis focused on identifying the influence of climate on the deterioration of flexible pavement and on the assessment of pavement performance with regard to variations of temperature and moisture content. Laboratory testing of AC with various mix compositions under repeated pore pressure loadings to quantify the influence... (More)
Roads are subjected to traffic loads and varying climate conditions that eventually lead to different types of damage. Moisture in asphalt is one of the major causes of premature failure in asphalt pavements. In addition, moisture in the unbound layers and temperature in the asphalt concrete (AC) layers affect the structural response of pavements under loading, such as the tensile strain at the bottom of AC layers. This thesis focused on identifying the influence of climate on the deterioration of flexible pavement and on the assessment of pavement performance with regard to variations of temperature and moisture content. Laboratory testing of AC with various mix compositions under repeated pore pressure loadings to quantify the influence of mix composition against moisture sensitivity was performed. The influence of climate parameters, i.e. moisture content and temperature on the tensile strain at the bottom of the AC layer, was also studied by means of a falling weight deflectometer and response measurements at full-scale pavement test sections. The results showed that binder content, air void content and pore pressure conditioning have a significant influence on the stiffness reduction of AC. In addition, the temperature and moisture content have yielded significant contributions towards explaining the strain at the bottom of AC layers. Relationships between climate impact and asphalt pavement properties have been proposed which may be useful in the evaluation and design of flexible pavement with respect to climate conditions. (Less)
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author
supervisor
organization
alternative title
Klimatets inverkan på asfaltbeläggningars beständighet
publishing date
type
Thesis
publication status
published
subject
in
Bulletin
issue
315
pages
51 pages
publisher
Faculty of Engineering, LTH Department of Technology and Society Transport and Roads
ISSN
1653-1930
ISBN
978-91-7895-431-5
978-91-7895-430-8
language
English
LU publication?
yes
id
d71ff00a-fb72-47ad-9047-d805e4a47980
date added to LUP
2020-06-08 15:49:58
date last changed
2020-06-22 10:33:06
@misc{d71ff00a-fb72-47ad-9047-d805e4a47980,
  abstract     = {Roads are subjected to traffic loads and varying climate conditions that eventually lead to different types of damage. Moisture in asphalt is one of the major causes of premature failure in asphalt pavements. In addition, moisture in the unbound layers and temperature in the asphalt concrete (AC) layers affect the structural response of pavements under loading, such as the tensile strain at the bottom of AC layers. This thesis focused on identifying the influence of climate on the deterioration of flexible<br/>pavement and on the assessment of pavement performance with regard to variations of temperature and moisture content. Laboratory testing of AC with various mix compositions under repeated pore pressure loadings to quantify the influence of mix<br/>composition against moisture sensitivity was performed. The influence of climate parameters, i.e. moisture content and temperature on the tensile strain at the bottom of the AC layer, was also studied by means of a falling weight deflectometer and<br/>response measurements at full-scale pavement test sections. The results showed that binder content, air void content and pore pressure conditioning have a significant influence on the stiffness reduction of AC. In addition, the temperature and moisture<br/>content have yielded significant contributions towards explaining the strain at the bottom of AC layers. Relationships between climate impact and asphalt pavement properties have been proposed which may be useful in the evaluation and design of<br/>flexible pavement with respect to climate conditions.},
  author       = {Sulejmani, Pajtim},
  isbn         = {978-91-7895-431-5},
  issn         = {1653-1930},
  language     = {eng},
  month        = {01},
  note         = {Licentiate Thesis},
  number       = {315},
  publisher    = {Faculty of Engineering, LTH Department of Technology and Society Transport and Roads},
  series       = {Bulletin},
  title        = {Climate impact on the durability of asphalt concrete},
  url          = {https://lup.lub.lu.se/search/ws/files/80384522/Pajtim_Sulejmani_web.pdf},
  year         = {2020},
}