Optimizing SBS & Tire Pyro Oil Modified VG 30 Bitumen for Sustainable Pavements
In recent years, Indian roads have experienced a significant increase in axle load and traffic volume, necessitating improved performance in top bituminous layers. While Indian guidelines recommend VG40 grade bitumen for perpetual pavements, its limited supply prompts widespread use of VG30 grade...
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| Format: | Article |
| Language: | English |
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Riga Technical University Press
2025-03-01
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| Series: | The Baltic Journal of Road and Bridge Engineering |
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| Online Access: | https://bjrbe-journals.rtu.lv/bjrbe/article/view/676 |
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| author | Saurabh Kulkarni Hemant Hadole Nikita Bhagat Mahadeo Randive |
| author_facet | Saurabh Kulkarni Hemant Hadole Nikita Bhagat Mahadeo Randive |
| author_sort | Saurabh Kulkarni |
| collection | DOAJ |
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In recent years, Indian roads have experienced a significant increase in axle load and traffic volume, necessitating improved performance in top bituminous layers. While Indian guidelines recommend VG40 grade bitumen for perpetual pavements, its limited supply prompts widespread use of VG30 grade bitumen. This study explores the viability of modified VG30 bitumen, employing Styrene Butadiene Styrene (SBS) and Tire pyro oil (TPO) as modifiers, as an alternative to VG40. Rheological tests, including Dynamic Shear Rheometer and Brookfield Viscometer, alongside morphological and chemical analyses, ascertain the optimal SBS dosage. Addition of TPO, ranging from 1% to 3%, reduces mixing and compaction temperatures. Marshall Stability and Indirect Tensile Strength tests compare strength characteristics. Sixteen perpetual pavement sections are designed based on Indian guidelines, comparing thickness, life cycle cost, and carbon dioxide emissions over five decades. Modified VG30 binder exhibits only a slight increase in thickness compared to unmodified VG40 binder, while significantly reducing life cycle costs and carbon dioxide emissions. Experimental results suggest that modified VG30 with 3% SBS, and optionally with 1% TPO, can effectively replace VG40 grade bitumen for perpetual pavements to address its supply issue.
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| format | Article |
| id | doaj-art-47d22b803caa44f19ad7641510ebd2d1 |
| institution | Kabale University |
| issn | 1822-427X 1822-4288 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Riga Technical University Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj-art-47d22b803caa44f19ad7641510ebd2d12025-08-20T03:42:18ZengRiga Technical University PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882025-03-0120110.7250/bjrbe.2025-20.652Optimizing SBS & Tire Pyro Oil Modified VG 30 Bitumen for Sustainable PavementsSaurabh Kulkarni0https://orcid.org/0000-0003-1908-0947Hemant Hadole1https://orcid.org/0000-0002-4907-1454Nikita Bhagat2https://orcid.org/0000-0002-4297-9718Mahadeo Randive3https://orcid.org/0000-0002-6919-1189Dept. of Civil Engineering, MES Wadia College of Engineering, Pune, 411001, IndiaDept. of Civil Engineering, College of Engineering, Pune, 411005, IndiaDept. of Civil Engineering, College of Engineering, Pune, 411005, IndiaDept. of Civil Engineering, College of Engineering, Pune, 411005, India In recent years, Indian roads have experienced a significant increase in axle load and traffic volume, necessitating improved performance in top bituminous layers. While Indian guidelines recommend VG40 grade bitumen for perpetual pavements, its limited supply prompts widespread use of VG30 grade bitumen. This study explores the viability of modified VG30 bitumen, employing Styrene Butadiene Styrene (SBS) and Tire pyro oil (TPO) as modifiers, as an alternative to VG40. Rheological tests, including Dynamic Shear Rheometer and Brookfield Viscometer, alongside morphological and chemical analyses, ascertain the optimal SBS dosage. Addition of TPO, ranging from 1% to 3%, reduces mixing and compaction temperatures. Marshall Stability and Indirect Tensile Strength tests compare strength characteristics. Sixteen perpetual pavement sections are designed based on Indian guidelines, comparing thickness, life cycle cost, and carbon dioxide emissions over five decades. Modified VG30 binder exhibits only a slight increase in thickness compared to unmodified VG40 binder, while significantly reducing life cycle costs and carbon dioxide emissions. Experimental results suggest that modified VG30 with 3% SBS, and optionally with 1% TPO, can effectively replace VG40 grade bitumen for perpetual pavements to address its supply issue. https://bjrbe-journals.rtu.lv/bjrbe/article/view/676bitumen modificationpavement designperpetual pavementsustainable pavements |
| spellingShingle | Saurabh Kulkarni Hemant Hadole Nikita Bhagat Mahadeo Randive Optimizing SBS & Tire Pyro Oil Modified VG 30 Bitumen for Sustainable Pavements The Baltic Journal of Road and Bridge Engineering bitumen modification pavement design perpetual pavement sustainable pavements |
| title | Optimizing SBS & Tire Pyro Oil Modified VG 30 Bitumen for Sustainable Pavements |
| title_full | Optimizing SBS & Tire Pyro Oil Modified VG 30 Bitumen for Sustainable Pavements |
| title_fullStr | Optimizing SBS & Tire Pyro Oil Modified VG 30 Bitumen for Sustainable Pavements |
| title_full_unstemmed | Optimizing SBS & Tire Pyro Oil Modified VG 30 Bitumen for Sustainable Pavements |
| title_short | Optimizing SBS & Tire Pyro Oil Modified VG 30 Bitumen for Sustainable Pavements |
| title_sort | optimizing sbs tire pyro oil modified vg 30 bitumen for sustainable pavements |
| topic | bitumen modification pavement design perpetual pavement sustainable pavements |
| url | https://bjrbe-journals.rtu.lv/bjrbe/article/view/676 |
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