Optimizing Co-blends Of Crumb Rubber And Ethylene Vinyl Acetate In 70/100 Bitumen
| Submitted | 2020-01-05 |
| Last Update | 2020-01-05 |
| Title | Optimizing Co-blends Of Crumb Rubber And Ethylene Vinyl Acetate In 70/100 Bitumen |
| Author(s) | Author #1 Author title: Name: Keith Nare Org: PhD Candidate, Center for Rubber Science and Technology, Nelson Mandela University, University Way, Port Elizabeth, 6019, South Africa. Country: Email: s211225193@mandela.ac.za Author #2 Author title: Name: Shanganyane Percy Hlangothi Org: Doctor, Center for Rubber Science and Technology, Nelson Mandela University, University Way, Port Elizabeth, 6019, South Africa. Country: Email: Percy.Hlangothi@mandela.ac.za |
| Other Author(s) | |
| Contact Author | Author #1 Alt Email: s211225193@mandela.ac.za Telephone: |
| Keywords | 70/100 bitumen, Co-blend, Crumb rubber, Ethylene vinyl acetate, Response surface methodology |
| Abstract | Formulation of modified bitumen co-blends presents challenges associated with contributions of individual and interaction effects to thermo-rheological properties. Crumb rubber and ethylene vinyl acetate were used to study the optimization of co-blends in 70/100 bitumen and compared to industrial standards. A laboratory mixer fitted with a dual helical impeller was used to perform the mixing after which dynamic shear rheometer was utilized to characterize the bituminous binders. The results showed that phase angle decreases with co-blend proportions, whereas the rutting parameter and complex shear modulus increase. Response surface methodology can be used to optimize formulations for modification of 70/100 bitumen. |
| Paper |  4835.pdf (353KB) |