Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt
The influences of silica fume content and aging on the rheological properties of silica fume/styrene-butadiene-styrene composite-modified asphalts were investigated via rolling thin-film oven test simulations. The asphalts rheological properties before and after aging were measured using three-major...
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| Format: | Article |
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MDPI AG
2021-10-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/21/6536 |
| _version_ | 1797512177216651264 |
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| author | Jingrong Zhu Wenyuan Xu |
| author_facet | Jingrong Zhu Wenyuan Xu |
| author_sort | Jingrong Zhu |
| collection | DOAJ |
| description | The influences of silica fume content and aging on the rheological properties of silica fume/styrene-butadiene-styrene composite-modified asphalts were investigated via rolling thin-film oven test simulations. The asphalts rheological properties before and after aging were measured using three-major-indices, dynamic shear rheology, and bending beam rheometer tests. Fourier transform infrared spectroscopy was used to examine the changes in the functional groups of the asphalt. The silica fume did not chemically react with the modified asphalt, and its original structure was maintained. The aging resistance improved significantly after adding the silica fume. At 6% silica fume content, the relaxation of the asphalt was the highest, indicating that the asphalt had the best low-temperature crack resistance at this mixing proportion. Furthermore, the carbonyl index value of this sample exhibited the smallest increment among all of the samples, and this asphalt sample had the strongest short-term aging resistance. Thus, the optimum silica fume content in the composite-modified asphalt was determined to be 6%. This information may be used to fabricate an asphalt mixture that can improve the service life and aging resistance of pavements. |
| first_indexed | 2024-03-10T05:58:10Z |
| format | Article |
| id | doaj.art-d219dda2d8014b5da5a5866850336226 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T05:58:10Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-d219dda2d8014b5da5a58668503362262023-11-22T21:13:40ZengMDPI AGMaterials1996-19442021-10-011421653610.3390/ma14216536Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified AsphaltJingrong Zhu0Wenyuan Xu1School of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaSchool of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaThe influences of silica fume content and aging on the rheological properties of silica fume/styrene-butadiene-styrene composite-modified asphalts were investigated via rolling thin-film oven test simulations. The asphalts rheological properties before and after aging were measured using three-major-indices, dynamic shear rheology, and bending beam rheometer tests. Fourier transform infrared spectroscopy was used to examine the changes in the functional groups of the asphalt. The silica fume did not chemically react with the modified asphalt, and its original structure was maintained. The aging resistance improved significantly after adding the silica fume. At 6% silica fume content, the relaxation of the asphalt was the highest, indicating that the asphalt had the best low-temperature crack resistance at this mixing proportion. Furthermore, the carbonyl index value of this sample exhibited the smallest increment among all of the samples, and this asphalt sample had the strongest short-term aging resistance. Thus, the optimum silica fume content in the composite-modified asphalt was determined to be 6%. This information may be used to fabricate an asphalt mixture that can improve the service life and aging resistance of pavements.https://www.mdpi.com/1996-1944/14/21/6536silica fumecomposite-modified asphaltrheological propertiesaging resistanceaging mechanism |
| spellingShingle | Jingrong Zhu Wenyuan Xu Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt Materials silica fume composite-modified asphalt rheological properties aging resistance aging mechanism |
| title | Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt |
| title_full | Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt |
| title_fullStr | Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt |
| title_full_unstemmed | Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt |
| title_short | Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt |
| title_sort | aging resistance of silica fume styrene butadiene styrene composite modified asphalt |
| topic | silica fume composite-modified asphalt rheological properties aging resistance aging mechanism |
| url | https://www.mdpi.com/1996-1944/14/21/6536 |
| work_keys_str_mv | AT jingrongzhu agingresistanceofsilicafumestyrenebutadienestyrenecompositemodifiedasphalt AT wenyuanxu agingresistanceofsilicafumestyrenebutadienestyrenecompositemodifiedasphalt |