Micro-structural and rheological characteristics of SBS-asphalt blends during their manufacturing
Two styrene–butadiene–styrene block (SBS) copolymers which differ in weight average molecular weight and two base asphalts (from local crude source, Argentina) had been blended under different experimental conditions. Rotational viscosity, fluorescence microscopy, size exclusion chromatography (SEC)...
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| Veröffentlicht in: | Construction & building materials 2009-08, Vol.23 (8), p.2769-2774 |
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| container_title | Construction & building materials |
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| creator | Larsen, Diego O. Alessandrini, José Luis Bosch, Alejandra Cortizo, M. Susana |
| description | Two styrene–butadiene–styrene block (SBS) copolymers which differ in weight average molecular weight and two base asphalts (from local crude source, Argentina) had been blended under different experimental conditions. Rotational viscosity, fluorescence microscopy, size exclusion chromatography (SEC) and FT-IR spectrometry were used in order to study the rheological and morphological changes of the blends during their manufacturing. Our results show that the high shear rate and temperature used during this procedure induce the SBS copolymer degradation and the degradation fragments distribution into maltenic asphalt phase. These events are responsible for the observed changes. The optimal time which produces the best rheological properties of modified asphalt depends on the blend composition and on the shear rate used. |
| doi_str_mv | 10.1016/j.conbuildmat.2009.03.008 |
| format | Article |
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Susana</creatorcontrib><collection>CrossRef</collection><collection>Gale Business: Insights</collection><collection>Business Insights: Essentials</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Construction & building materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Larsen, Diego O.</au><au>Alessandrini, José Luis</au><au>Bosch, Alejandra</au><au>Cortizo, M. 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Our results show that the high shear rate and temperature used during this procedure induce the SBS copolymer degradation and the degradation fragments distribution into maltenic asphalt phase. These events are responsible for the observed changes. The optimal time which produces the best rheological properties of modified asphalt depends on the blend composition and on the shear rate used.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.conbuildmat.2009.03.008</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0950-0618 |
| ispartof | Construction & building materials, 2009-08, Vol.23 (8), p.2769-2774 |
| issn | 0950-0618 1879-0526 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_34498052 |
| source | Elsevier ScienceDirect Journals |
| subjects | Aromatic compounds Asphalt industry Bituminous materials Block copolymers Butadiene Chromatography FT-IR Mechanical properties Modified asphalt Morphology Polymers Production processes SBS copolymer Viscosity Weight average molecular weight |
| title | Micro-structural and rheological characteristics of SBS-asphalt blends during their manufacturing |
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