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Optimizing Co-blends of Crumb Rubber and Ethylene Vinyl Acetate in 70/100 Bitumen

Submitted2020-01-05
Last Update2020-01-05
TitleOptimizing Co-blends of Crumb Rubber and Ethylene Vinyl Acetate in 70/100 Bitumen
Author(s)Author #1
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
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 AuthorAuthor #1
Alt Email: s211225193@mandela.ac.za
Telephone:
Keywords70/100 bitumen, Co-blend, Crumb rubber, Ethylene vinyl acetate, Response surface methodology
AbstractFormulation 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.
Topics• str
• str. dyn.
• con.mat..
• tra.-traf.
• surv.
• tra.-pav.
• wat. Res.
Comments
Paper 4835.pdf (353KB)
 

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