A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Relationship between microstructure and phase morphology of SBS modified bitumen with processing parameters studied using atomic force microscopy
Graphical abstract Display Omitted
Highlights AFM used to study processing induced aging effects on the phase structure of SBS modified bitumen. Inclusion of SBS and varying processing parameters alters the topographic and phase images of bitumen. SBS modification of bitumen decreases the number of ‘bumble-bee’ structures. Long mixing times produces the shortest ‘bumble-bee structures. At shorter mixing speeds, the SBS did not absorb the bitumen oily components.
Abstract The aging effects of varying processing parameters, mixing time and shear speed, on the morphology and phase structure of styrene–butadiene-styrene (SBS) modified bitumen were studied used atomic force microscopy (AFM). Both inclusion of SBS and varying processing parameters provide differences in topographic and phase images of the bitumen. The contrast between phases becomes more distinct with increasing mixing time and speed, with the amount of dark phase associated with the asphaltene component of the bitumen also increasing. SBS modification of bitumen results in a decrease in the number of ‘bumble-bee’ like structures and when combined with varying mixing time produced the longest ‘bumble-bee’ structures. At the lowest mixing speeds (1000 rpm), the mixing was not effective for the SBS to absorb the bitumen oily components. Longer mixing times, 45 min, clearly altered the blend morphology and resulted in shorter ‘bumble-bee’ structures.
Relationship between microstructure and phase morphology of SBS modified bitumen with processing parameters studied using atomic force microscopy
Graphical abstract Display Omitted
Highlights AFM used to study processing induced aging effects on the phase structure of SBS modified bitumen. Inclusion of SBS and varying processing parameters alters the topographic and phase images of bitumen. SBS modification of bitumen decreases the number of ‘bumble-bee’ structures. Long mixing times produces the shortest ‘bumble-bee structures. At shorter mixing speeds, the SBS did not absorb the bitumen oily components.
Abstract The aging effects of varying processing parameters, mixing time and shear speed, on the morphology and phase structure of styrene–butadiene-styrene (SBS) modified bitumen were studied used atomic force microscopy (AFM). Both inclusion of SBS and varying processing parameters provide differences in topographic and phase images of the bitumen. The contrast between phases becomes more distinct with increasing mixing time and speed, with the amount of dark phase associated with the asphaltene component of the bitumen also increasing. SBS modification of bitumen results in a decrease in the number of ‘bumble-bee’ like structures and when combined with varying mixing time produced the longest ‘bumble-bee’ structures. At the lowest mixing speeds (1000 rpm), the mixing was not effective for the SBS to absorb the bitumen oily components. Longer mixing times, 45 min, clearly altered the blend morphology and resulted in shorter ‘bumble-bee’ structures.
Relationship between microstructure and phase morphology of SBS modified bitumen with processing parameters studied using atomic force microscopy
Kaya Ozdemir, Derya (author) / Topal, Ali (author) / McNally, Tony (author)
2020-09-20
Article (Journal)
Electronic Resource
English
Bitumen Morphology as Observed by Phase-Detection Atomic Force Microscopy
| British Library Online Contents | 2008
Micromorphology and microrheology of modified bitumen by atomic force microscopy
| British Library Online Contents | 2014
Micromorphology and microrheology of modified bitumen by atomic force microscopy
| Taylor & Francis Verlag | 2014
Morphological analysis of bitumen phases using atomic force microscopy
| Taylor & Francis Verlag | 2015
Investigation of the bulk and surface microstructure of bitumen by atomic force microscopy
| British Library Online Contents | 2018