Effects of Pruning Residues from Blueberry Bushes Powder on the Physical and Rheological Properties of Bitumen

Bitumen is a hydrocarbon product prone to oxidative aging. For this reason, the aim of this study is to evaluate physical and rheological properties of modified bitumen with pruning residues from blueberry bushes powder (RPA), anti-aging natural compound, to reduce the oxidative damage of bitumen. R...

Full description

Saved in:
Bibliographic Details
Published in:Key engineering materials 2022-09, Vol.931, p.191-197
Main Authors: Durán, Gary, Cardoza, Martin Arévalo, Cano, Gustavo Llerena, Alegre, Patricia Figueroa
Format: Article
Language:English
Subjects:
Bitumens
Ductility tests
Elastic deformation
Low temperature
Low temperature resistance
Oxidation resistance
Penetration resistance
Pruning
Residues
Rheological properties
Softening points
Thin films
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Bitumen is a hydrocarbon product prone to oxidative aging. For this reason, the aim of this study is to evaluate physical and rheological properties of modified bitumen with pruning residues from blueberry bushes powder (RPA), anti-aging natural compound, to reduce the oxidative damage of bitumen. Rolling thin film oven test (RTFOT) was performed to simulate short term aging of modified bitumen with 2, 6 and 10% RPA by weight. The results of conventional tests (penetration, softening point, ductility and rotational viscosity) indicated that the addition of RPA increases the stiffness of bitumen and decreases its temperature susceptibility. In addition, dynamic shear rheometer test (DSR) shows that modified binders improve their resistance against deformation and enhance their elastic response. The 6% RPA binder demonstrated better oxidative aging resistance without compromising its performance at low temperature.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/p-et4mwy