The effect of bitumen rheology to the permanent deformation of an asphalt concrete mixture
Bitumen which functions as a binder in asphalt concrete mixture is also a visco-elastic and thermoplastic material. The characteristics are also influence by the temperature. It is because in hot condition or at high temperature, bitumen acts like a viscous liquid. In cold climate or at low te...
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English English English |
| Published: |
2005
|
| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8160/1/24p%20MAHVIDAYANTI%20MUHAMAD%20TARMIDI.pdf http://eprints.uthm.edu.my/8160/2/MAHVIDAYANTI%20MUHAMAD%20TARMIDI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8160/3/MAHVIDAYANTI%20MUHAMAD%20TARMIDI%20WATERMARK.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Bitumen which functions as a binder in asphalt concrete mixture is also a visco-elastic
and thermoplastic material. The characteristics are also influence by the temperature.
It is because in hot condition or at high temperature, bitumen acts like a viscous
liquid. In cold climate or at low temperature, bitumen behaves like an elastic solid.
Even though bitumen is an elastic solid at low temperatures, it may become too brittle
and crack when excessively loaded. However, the characteristic of an asphalt
concrete are influenced by the rheology of bitumen which having two important
properties; resistance to permanent deformation and fatigue. In this study, the most
important thing to measure is the rheology of two different types of bitumen. The
measurement was done using the Dynamic Shear Rheometer to obtain the visco�elastic properties of bitumen. The bitumen was then used in preparing an asphalt
concrete mixture in order to test the rutting or permanent deformation using the Static
Creep test. An analysis was done to verify the correlation between the rheology of
two different types of bitumen and the rate of permanent deformation of the asphalt
concrete mixture. Results obtained showed that both bitumens having a different
rheology. Moreover, rutting parameter, G*/sin 8 could predict the different of creep
performance. However, bitumen with identical value of G*/sin 5 at a different
temperature would not necessarily produce mixture with the same creep compliance
under the related temperature. Therefore, for further study it is recommended to focus
on the load effect to the creep compliance. |
|---|