Developing new chemical–rheological models and chemical–durability indices of bitumen
Significant correlation among chemical properties, rheological characteristics and durability of bitumen is very important in evaluating and modifying bitumen. However, a number of previous studies found inconsistent correlation. Therefore, a study on developing new chemical-rheological models and...
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my-uthm-ep.22002021-10-31T04:02:01Z Developing new chemical–rheological models and chemical–durability indices of bitumen 2013-11 Hermadi, Madi TE Highway engineering. Roads and pavements TE210-228.3 Construction details. Including foundations, maintenance, equipment Significant correlation among chemical properties, rheological characteristics and durability of bitumen is very important in evaluating and modifying bitumen. However, a number of previous studies found inconsistent correlation. Therefore, a study on developing new chemical-rheological models and chemical-durability indices was carried out. Two bitumen fractionation method, Rostler and Corbett methods were used to extract each chemical fraction of bitumen. A number of experiments were conducted to evaluate the effect of each chemical fraction on bitumen rheology such as the effect of asphaltenes, polar aromatics, naphthene aromatics, nitrogen bases, first acidaffins, second acidaffins and paraffins on elastic modulus (G’), viscous modulus (G”) or fatigue factor (G*sin[δ]), and rutting fator (G*/sin[δ]). Two bitumen from different sources, namely Petronas petroleum bitumen and Buton rock asphalt (BRA) bitumen, were used. New chemical�rheological models were formulated to estimate the bitumen rheology in corporating parameters which are G’, G” or (G*sin[δ]), and (G*/sin[δ]) based on the chemical properties. Furthermore, new chemical durability indices that may indicate the ageing rate of bitumen during short-term and long-term ageing were also formulated. Based on statistical analyses, the models and the indices, which were developed by using chemical properties according to Rostler method were found to be invalid because the real and the predicted rheology were significantly different. While according to Corbett method the models and the indices were valid because the differences is not significant since t-score of the models and the indices were maximum 2.679 and 2.119 or less than t-critical 2.797 and 2.861 respectively). The novelties of this study are the new models and the new indices can be used to predict the bitumen rheology and ageing rate based on the chemical composition. Furthermore, they are very important as guides in modifying a bitumen chemical composition to produce a bitumen mixture with the desired rheology and short-term or long-term ageing rate 2013-11 Thesis http://eprints.uthm.edu.my/2200/ http://eprints.uthm.edu.my/2200/1/24p%20MADI%20HERMADI.pdf text en public http://eprints.uthm.edu.my/2200/2/MADI%20HERMADI%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/2200/3/MADI%20HERMADI%20WATERMARK.pdf text en validuser phd doctoral Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Awam dan Alam Bina |
| institution |
Universiti Tun Hussein Onn Malaysia |
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UTHM Institutional Repository |
| language |
English English English |
| topic |
TE Highway engineering Roads and pavements TE Highway engineering Roads and pavements |
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TE Highway engineering Roads and pavements TE Highway engineering Roads and pavements Hermadi, Madi Developing new chemical–rheological models and chemical–durability indices of bitumen |
| description |
Significant correlation among chemical properties, rheological characteristics and
durability of bitumen is very important in evaluating and modifying bitumen. However, a number of previous studies found inconsistent correlation. Therefore, a
study on developing new chemical-rheological models and chemical-durability
indices was carried out. Two bitumen fractionation method, Rostler and Corbett
methods were used to extract each chemical fraction of bitumen. A number of
experiments were conducted to evaluate the effect of each chemical fraction on
bitumen rheology such as the effect of asphaltenes, polar aromatics, naphthene
aromatics, nitrogen bases, first acidaffins, second acidaffins and paraffins on elastic
modulus (G’), viscous modulus (G”) or fatigue factor (G*sin[δ]), and rutting fator
(G*/sin[δ]). Two bitumen from different sources, namely Petronas petroleum
bitumen and Buton rock asphalt (BRA) bitumen, were used. New chemical�rheological models were formulated to estimate the bitumen rheology in corporating
parameters which are G’, G” or (G*sin[δ]), and (G*/sin[δ]) based on the chemical
properties. Furthermore, new chemical durability indices that may indicate the
ageing rate of bitumen during short-term and long-term ageing were also formulated.
Based on statistical analyses, the models and the indices, which were developed by
using chemical properties according to Rostler method were found to be invalid
because the real and the predicted rheology were significantly different. While
according to Corbett method the models and the indices were valid because the
differences is not significant since t-score of the models and the indices were
maximum 2.679 and 2.119 or less than t-critical 2.797 and 2.861 respectively). The
novelties of this study are the new models and the new indices can be used to predict
the bitumen rheology and ageing rate based on the chemical composition.
Furthermore, they are very important as guides in modifying a bitumen chemical
composition to produce a bitumen mixture with the desired rheology and short-term
or long-term ageing rate |
| format |
Thesis |
| qualification_name |
Doctor of Philosophy (PhD.) |
| qualification_level |
Doctorate |
| author |
Hermadi, Madi |
| author_facet |
Hermadi, Madi |
| author_sort |
Hermadi, Madi |
| title |
Developing new chemical–rheological models and chemical–durability indices of bitumen |
| title_short |
Developing new chemical–rheological models and chemical–durability indices of bitumen |
| title_full |
Developing new chemical–rheological models and chemical–durability indices of bitumen |
| title_fullStr |
Developing new chemical–rheological models and chemical–durability indices of bitumen |
| title_full_unstemmed |
Developing new chemical–rheological models and chemical–durability indices of bitumen |
| title_sort |
developing new chemical–rheological models and chemical–durability indices of bitumen |
| granting_institution |
Universiti Tun Hussein Onn Malaysia |
| granting_department |
Fakulti Kejuruteraan Awam dan Alam Bina |
| publishDate |
2013 |
| url |
http://eprints.uthm.edu.my/2200/1/24p%20MADI%20HERMADI.pdf http://eprints.uthm.edu.my/2200/2/MADI%20HERMADI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/2200/3/MADI%20HERMADI%20WATERMARK.pdf |
| _version_ |
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