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Jämförelse av fossila bindemedel och biobindemedel med tallbecksolja

Ehrengren, Isa LU and Almlöf, Karolina LU (2026) VTVM05 20261
Transport and Roads
Abstract
The road construction industry is associated with high energy consumption and significant greenhouse gas emissions due to the extensive use of petroleum-based bitumen. To support a more sustainable society, bio-based alternatives such as tall oil pitch (TOP), a by-product from the pulp industry, have gained increasing interest as partial substitutes for conventional bitumen. However, the long-term performance and rheological properties of these materials are not yet fully understood. The aim of this study was to determine the TOP content required in 50/70 bitumen to resemble the properties of conventional 70/100 and 160/220 bitumen. Dynamic Shear Rheometer (DSR) testing and Ring & Ball softening point measurements were used to evaluate the... (More)
The road construction industry is associated with high energy consumption and significant greenhouse gas emissions due to the extensive use of petroleum-based bitumen. To support a more sustainable society, bio-based alternatives such as tall oil pitch (TOP), a by-product from the pulp industry, have gained increasing interest as partial substitutes for conventional bitumen. However, the long-term performance and rheological properties of these materials are not yet fully understood. The aim of this study was to determine the TOP content required in 50/70 bitumen to resemble the properties of conventional 70/100 and 160/220 bitumen. Dynamic Shear Rheometer (DSR) testing and Ring & Ball softening point measurements were used to evaluate the rheological behaviour and temperature sensitivity of the binders. Mastercurves and deviation analyses were also performed to compare the bio-binders with conventional bitumen over wide range of temperatures and loading frequencies. The results showed that the bio-binders exhibited rheological
properties like those of the corresponding conventional bitumen. Aging was evaluated using the Rolling Thin Film Oven Test (RTFOT), which enabled analysis of rutting and fatigue-related properties. The bio-binders demonstrated slightly improved rutting resistance, while fatigue resistance showed some variation. Overall, the study indicates that TOP-based bio-binders can provide rheological performance comparable to conventional bitumen while offering potential environmental benefits. (Less)
Popular Abstract (Swedish)
Kan en restprodukt från skogsindustrin göra våra vägar mer hållbara? Studien visar att tallbecksolja kan ersätta delar av fossil bitumen utan att försämra asfaltens kvalitet och i vissa fall till och med förbättra den. Resultaten pekar på att biobaserade bindemedel kan bli ett viktigt steg mot mer klimatvänliga och hållbara vägar.
Please use this url to cite or link to this publication:
author
Ehrengren, Isa LU and Almlöf, Karolina LU
supervisor
organization
alternative title
Comparison of fossil-based binders and bio-based binders with tall oil pitch
course
VTVM05 20261
year
type
H3 - Professional qualifications (4 Years - )
subject
keywords
DSR, Bitumen, Tallbecksolja, Biobindemedel, Reologi
report number
418
ISSN
1653-1922
language
Swedish
id
9229194
date added to LUP
2026-06-01 07:25:03
date last changed
2026-06-01 07:25:03
@misc{9229194,
  abstract     = {{The road construction industry is associated with high energy consumption and significant greenhouse gas emissions due to the extensive use of petroleum-based bitumen. To support a more sustainable society, bio-based alternatives such as tall oil pitch (TOP), a by-product from the pulp industry, have gained increasing interest as partial substitutes for conventional bitumen. However, the long-term performance and rheological properties of these materials are not yet fully understood. The aim of this study was to determine the TOP content required in 50/70 bitumen to resemble the properties of conventional 70/100 and 160/220 bitumen. Dynamic Shear Rheometer (DSR) testing and Ring & Ball softening point measurements were used to evaluate the rheological behaviour and temperature sensitivity of the binders. Mastercurves and deviation analyses were also performed to compare the bio-binders with conventional bitumen over wide range of temperatures and loading frequencies. The results showed that the bio-binders exhibited rheological 
properties like those of the corresponding conventional bitumen. Aging was evaluated using the Rolling Thin Film Oven Test (RTFOT), which enabled analysis of rutting and fatigue-related properties. The bio-binders demonstrated slightly improved rutting resistance, while fatigue resistance showed some variation. Overall, the study indicates that TOP-based bio-binders can provide rheological performance comparable to conventional bitumen while offering potential environmental benefits.}},
  author       = {{Ehrengren, Isa and Almlöf, Karolina}},
  issn         = {{1653-1922}},
  language     = {{swe}},
  note         = {{Student Paper}},
  title        = {{Jämförelse av fossila bindemedel och biobindemedel med tallbecksolja}},
  year         = {{2026}},
}